Current Legacy Release
The sudo 1.8 branch is considered the
legacy version.
It receives no new features, only critical bug fixes.
Users are highly encouraged to migrate to the sudo
stable branch.
The current legacy release of sudo
is 1.8.32.
You can view the commit history via mercurial.
Major changes between version 1.8.32 and 1.8.31p2:
- Fixed a regression introduced in sudo 1.8.9 where the closefrom
sudoers option could not be set to a value of 3.
Bug #950.
- Fixed a regression introduced in sudo 1.8.24 in the LDAP back-end
where sudoNotBefore and sudoNotAfter were applied even when the
SUDOERS_TIMED setting was not present in ldap.conf.
Bug #945.
- Fixed a buffer size mismatch when serializing the list of IP
addresses for configured network interfaces. This bug is not
actually exploitable since the allocated buffer is large enough
to hold the list of addresses.
- If sudo is executed with a name other than sudo
or sudoedit, it will now fall back to
sudo as the program name. This affects
warning, help and usage messages as well as the matching
of Debug lines in the /etc/sudo.conf file.
Previously, it was possible for the invoking user to
manipulate the program name by setting argv[0] to
an arbitrary value when executing sudo.
- Sudo now checks for failure when setting the close-on-exec flag
on open file descriptors. This should never fail but, if it
were to, there is the possibility of a file descriptor leak to
a child process (such as the command sudo runs).
- Fixed CVE-2021-23239,
a potential information leak in sudoedit
that could be used to test for the existence of directories not
normally accessible to the user in certain circumstances. When
creating a new file, sudoedit checks to make sure the parent
directory of the new file exists before running the editor.
However, a race condition exists if the invoking user can replace
(or create) the parent directory. If a symbolic link is created
in place of the parent directory, sudoedit will run the editor
as long as the target of the link exists. If the target of the
link does not exist, an error message will be displayed. The
race condition can be used to test for the existence of an
arbitrary directory. However, it cannot be used
to write to an arbitrary location.
- Fixed CVE-2021-23240,
a flaw in the temporary file handling of
sudoedit's SELinux RBAC support. On systems where SELinux is
enabled, a user with sudoedit permissions may be able to set the
owner of an arbitrary file to the user-ID of the target user.
On Linux kernels that support protected symlinks setting
/proc/sys/fs/protected_symlinks to 1 will prevent the bug from
being exploited. For more information, see
Symbolic link attack in SELinux-enabled sudoedit.
- Added writability checks for sudoedit when SELinux
RBAC is in use. This makes sudoedit behavior consistent
regardless of whether or not SELinux RBAC is in use.
Previously, the sudoedit_checkdir setting had no
effect for RBAC entries.
- When invoked as sudoedit, the same set of command line options
are now accepted as for sudo -e. The -H
and -P options are now rejected for
sudoedit and sudo -e which matches the
sudo 1.7 behavior. This is part of the fix for CVE-2021-3156.
- Fixed a potential buffer overflow when unescaping backslashes
in the command's arguments. Normally, sudo escapes special
characters when running a command via a shell (sudo
-s or sudo -i). However, it was also possible
to run sudoedit with the -s or
-i flags in which case no escaping had
actually been done, making a buffer overflow possible. This
fixes CVE-2021-3156.
Major changes between version 1.8.31p2 and 1.8.31p1:
- Sudo command line options that take a value may only be specified
once. This is to help guard against problems caused by poorly
written scripts that invoke sudo with user-controlled input.
Bug #924.
- When running a command in a pty, sudo will no longer try to
suspend itself if the user's tty has been revoked (for instance
when the parent ssh daemon is killed). This fixes a bug where
sudo would continuously suspend the command (which would succeed),
then suspend itself (which would fail due to the missing tty)
and then resume the command.
- If sudo's event loop fails due to the tty being revoked,
remove the user's tty events and restart the event loop
(once). This fixes a problem when running sudo reboot
in a pty on some systems. When the event loop exited
unexpectedly, sudo would kill the command running in the
pty, which in the case of reboot, could lead to
the system being in a half-rebooted state.
- Fixed a regression introduced in sudo 1.8.23 in the LDAP and
SSSD back-ends where a missing sudoHost attribute
was treated as an ALL wildcard value. A
sudoRole with no sudoHost attribute is
now ignored as it was prior to version 1.8.23.
Major changes between version 1.8.31p1 and 1.8.31:
- Sudo once again ignores a failure to restore the
RLIMIT_CORE resource limit, as it did prior to
version 1.8.29. Linux containers don't allow RLIMIT_CORE
to be set back to RLIM_INFINITY if we set the limit
to zero, even for root, which resulted in a warning from
sudo.
Major changes between version 1.8.31 and 1.8.30:
- Fixed CVE-2019-18634,
a buffer overflow when the pwfeedback
sudoers option is enabled on systems with uni-directional pipes.
- The sudoedit_checkdir option now treats a user-owned directory
as writable, even if it does not have the write bit set at the
time of check. Symbolic links will no longer be followed by
sudoedit in any user-owned directory.
Bug #912.
- Fixed sudoedit on macOS 10.15 and above where the root file system
is mounted read-only.
Bug #913.
- Fixed a crash introduced in sudo 1.8.30 when suspending sudo
at the password prompt.
Bug #914.
- Fixed compilation on systems where the mmap MAP_ANON flag
is not available.
Bug #915.
Major changes between version 1.8.30 and 1.8.29:
Major changes between version 1.8.29 and 1.8.28p1:
- The cvtsudoers command will now reject non-LDIF input when converting
from LDIF format to sudoers or JSON formats.
- The new log_allowed and log_denied sudoers settings
make it possible to disable logging and auditing of allowed
and/or denied commands.
- The umask is now handled differently on systems with PAM or login.conf.
If the umask is explicitly set in sudoers, that value is
used regardless of what PAM or login.conf may specify.
However, if the umask is not explicitly set in sudoers, PAM
or login.conf may now override the default sudoers umask.
Bug #900.
- For make install, the sudoers file is no longer
checked for syntax errors when DESTDIR is set.
The default sudoers file includes the contents of
/etc/sudoers.d which may not be readable as non-root.
Bug #902.
- Sudo now sets most resource limits to their maximum value to avoid
problems caused by insufficient resources, such as an inability to
allocate memory or open files and pipes.
- Fixed a regression introduced in sudo 1.8.28 where sudo would refuse
to run if the parent process was not associated with a session.
This was due to sudo passing a session ID of -1 to the plugin.
Major changes between version 1.8.28p1 and 1.8.28:
- The fix for
Bug #869
caused sudo -v to prompt for a password when
verifypw is set to all (the default) and
all of the user's sudoers entries are marked with
NOPASSWD.
Bug #901.
Major changes between version 1.8.28 and 1.8.27:
- Sudo will now only set PAM_TTY to the empty string
when no terminal is present on Solaris and Linux. This
workaround is only needed on those systems which may have
PAM modules that misbehave when PAM_TTY is not set.
- The mailerflags sudoers option now has a default value
even if sendmail support was disabled at configure time.
Fixes a crash when the mailerpath sudoers option is set but
mailerflags is not.
Bug #878.
- Sudo will now filter out last login messages on HP-UX unless it
a shell is being run via sudo -s or sudo -i.
Otherwise, when trusted mode is enabled, these messages will be
displayed for each command.
- On AIX, when the user's password has expired and PAM is not in use,
sudo will now allow the user to change their password.
Bug #883.
- Sudo has a new -B command line option that will
ring the terminal bell when prompting for a password.
- Sudo no longer refuses to prompt for a password when it
cannot determine the user's terminal as long as it can open
/dev/tty. This allows sudo to function on systems
where /proc is unavailable, such as when running
in a chroot environment.
- The env_editor sudoers flag is now on by default.
This makes source builds more consistent with the packages
generated by sudo's mkpkg script.
- Sudo no longer ships with pre-formatted copies of the manual pages.
These were included for systems like IRIX that don't ship with an
nroff utility. There are now multiple Open Source nroff replacements
so this should no longer be an issue.
- Fixed a bad interaction with configure's --prefix and
--disable-shared options.
Bug #886.
- More verbose error message when a password is required and
no terminal is present.
Bug #828.
- Command tags, such as NOPASSWD, are honored when
a user tries to run a command that is allowed by sudoers
but which does not actually exist on the file system.
Bug #888.
- Asturian translation for sudoers from
translationproject.org.
- I/O log timing files now store signal suspend and resume information
in the form of a signal name instead of a number.
- Fixed a bug introduced in 1.8.24 that prevented sudo from
honoring the value of ipa_hostname from
sssd.conf, if specified, when matching the host
name.
- Fixed a bug introduced in 1.8.21 that prevented the core dump
resource limit set in the pam_limits module from taking effect.
Bug #894.
- Fixed parsing of double-quoted Defaults group and netgroup bindings.
- The user ID is now used when matching sudoUser attributes in LDAP.
Previously, the user name, group name and group IDs were used
when matching but not the user ID.
- Sudo now writes PAM messages to the user's terminal, if available,
instead of the standard output or standard error. This prevents
PAM output from being intermixed with that of the command when
output is sent to a file or pipe.
Bug #895.
- Sudoedit now honors the umask and umask_override
settings in sudoers. Previously, the user's umask was used as-is.
- Fixed a bug where the terminal's file context was not restored
when using SELinux RBAC.
Bug #898.
- Fixed a security issue
where a sudo user may be able to run a command as root when
the Runas specification explicitly disallows root access
as long as the ALL keyword is listed first.
This vulnerability has been assigned CVE-2019-14287
Major changes between version 1.8.27 and 1.8.26:
- On HP-UX, sudo will now update the utmps file when running a command
in a pseudo-tty. Previously, only the utmp and utmpx files were
updated.
- Nanosecond precision file time stamps are now supported on HP-UX.
- Fixes and clarifications to the sudo plugin documentation.
- The sudo manuals no longer require extensive post-processing to
hide system-specific features. Conditionals in the roff source
are now used instead. This fixes corruption of the sudo manual
on systems without BSD login classes.
Bug #861.
- If an I/O logging plugin is configured but the plugin does not
actually log any I/O, sudo will no longer force the command to
be run in a pseudo-tty.
- The fix for
bug #843
in sudo 1.8.24 was incomplete. If the user's password was
expired or needed to be updated, but no sudo password was
required, the PAM handle was freed too early, resulting in
a failure when processing PAM session modules.
- In visudo, it is now possible to specify the path to sudoers
without using the -f option.
Bug #864.
- Fixed a bug introduced in sudo 1.8.22 where the utmp (or utmpx)
file would not be updated when a command was run in a pseudo-tty.
Bug #865.
- Sudo now sets the silent flag when opening the PAM session except
when running a shell via sudo -s or sudo -i.
This prevents the pam_lastlog module from printing the last
login information for each sudo command.
Bug #867.
- Sudo now sets the silent flag when opening the PAM session except
when running a shell via sudo -s or sudo -i.
This prevents the pam_lastlog module from printing the last
login information for each sudo command.
Bug #867.
-
Fixed the default AIX hard resource limit for the maximum number
of files a user may have open. If no hard limit for nofiles
is explicitly set in /etc/security/limits, the default should
be unlimited. Previously, the default hard limit was 8196.
Major changes between version 1.8.26 and 1.8.25p1:
- Fixed a bug in cvtsudoers when converting to JSON format when
alias expansion is enabled.
Bug #853.
- Sudo no long sets the USERNAME environment variable when running
commands. This is a non-standard environment variable that was
set on some older Linux systems.
- Sudo now treats the LOGNAME and USER environment variables (as
well as the LOGIN variable on AIX) as a single unit. If one is
preserved or removed from the environment using env_keep, env_check
or env_delete, so is the other.
- Added support for OpenLDAP's TLS_REQCERT setting in ldap.conf.
- Sudo now logs when the command was suspended and resumed in the
I/O logs. This information is used by sudoreplay to skip the
time suspended when replaying the session unless the new -S flag
is used.
- Fixed documentation problems found by the igor utility.
Bug #854.
- Sudo now prints a warning message when there is an error or end
of file while reading the password instead of exiting silently.
- Fixed a bug in the sudoers LDAP back-end parsing the command_timeout,
role, type, privs and limitprivs sudoOptions. This also affected
cvtsudoers conversion from LDIF to sudoers or JSON.
- Fixed a bug that prevented timeout settings in sudoers from
functioning unless a timeout was also specified on the command
line.
- Asturian translation for sudo from
translationproject.org.
- When generating LDIF output, cvtsudoers can now be configured
to pad the sudoOrder increment such that the start order is used
as a prefix.
Bug #856.
- Fixed a bug introduced in sudo 1.8.25 that prevented sudo from
properly setting the user's groups on AIX.
Bug #857.
- If the user specifies a group via sudo's -g option that matches
any of the target user's groups, it is now allowed even if no
groups are present in the Runas_Spec. Previously, it was only
allowed if it matched the target user's primary group.
- The sudoers LDAP back-end now supports negated sudoRunAsUser and
sudoRunAsGroup entries.
- Sudo now provides a proper error message when the "fqdn" sudoers
option is set and it is unable to resolve the local host name.
Bug #859.
- Portuguese translation for sudo and sudoers from
translationproject.org.
- Sudo now includes sudoers LDAP schema for the on-line configuration
supported by OpenLDAP.
Major changes between version 1.8.25p1 and 1.8.25:
- Fixed a bug introduced in sudo 1.8.25 that caused a crash on
systems that have the poll() function but not the
ppoll() function.
Bug #851.
Major changes between version 1.8.25 and 1.8.24:
- Fixed a bug introduced in sudo 1.8.20 that broke formatting of
I/O log timing file entries on systems without a C99-compatible
snprintf() function. Our replacement snprintf()
doesn't support floating point so we can't use the %f format
directive.
- I/O log timing file entries now use a monotonic timer and include
nanosecond precision. A monotonic timer that does not increment
while the system is sleeping is used where available.
- Fixed a bug introduced in sudo 1.8.24 where sudoNotAfter in the LDAP
backend was not being properly parsed.
Bug #845.
- When sudo runs a command in a pseudo-tty, the slave device is
now closed in the main process immediately after starting the
monitor process. This removes the need for an AIX-specific
workaround that was added in sudo 1.8.24.
- Added support for monotonic timers on HP-UX.
- Fixed a bug displaying timeout values the "sudo -V" output.
The value displayed was 3600 times the actual value.
Bug #846.
- Fixed a build issue on AIX 7.1 BOS levels that include memset_s()
and define rsize_t in string.h.
Bug #847.
- The testsudoers utility now supports querying an LDIF-format
policy.
- Sudo now sets the LOGIN environment variable to the
same value as LOGNAME on AIX systems.
Bug #848.
- Fixed a regression introduced in sudo 1.8.24 where the LDAP and
SSSD backends evaluated the rules in reverse sudoOrder.
Bug #849.
Major changes between version 1.8.24 and 1.8.23:
- The LDAP and SSS back-ends now use the same rule evaluation code
as the sudoers file backend. This builds on the work in sudo
1.8.23 where the formatting functions for sudo -l
output were shared. The handling of negated commands in SSS
and LDAP is unchanged.
- Fixed a regression introduced in 1.8.23 where sudo -i could
not be used in conjunction with --preserve-env=VARIABLE.
Bug #835.
- cvtsudoers can now parse base64-encoded attributes in LDIF files.
- Random insults are now more random.
- Fixed the noexec wordexp(3) test on FreeBSD.
- Added SUDO_CONV_PREFER_TTY flag for conversation function to
tell sudo to try writing to /dev/tty first. Can be used in
conjunction with SUDO_CONV_INFO_MSG and
SUDO_CONV_ERROR_MSG.
- Sudo now supports an arbitrary number of groups per user on
Solaris. Previously, only the first 64 groups were found.
This should remove the need to set max_groups in sudo.conf.
- Fixed typos in the OpenLDAP sudo schema. Bugs #839 and #840.
Bug #839
and
bug #840.
- Fixed a race condition when building with parallel make.
Bug #842.
- Fixed a duplicate free when netgroup_base in
ldap.conf is set to an invalid value.
- Fixed a bug introduced in sudo 1.8.23 on AIX that could prevent
local users and groups from being resolved properly on systems
that have users stored in NIS, LDAP or AD.
- Added a workaround for an AIX bug exposed by a change in sudo
1.8.23 that prevents the terminal mode from being restored when
I/O logging is enabled.
- On systems using PAM, sudo now ignores the PAM_NEW_AUTHTOK_REQD
and PAM_AUTHTOK_EXPIRED errors from PAM account management if
authentication is disabled for the user. This fixes a regression
introduced in sudo 1.8.23.
Bug #843.
- Fixed an ambiguity in the sudoers manual in the description and
definition of User, Runas, Host, and Cmnd Aliases.
Bug #834.
- Fixed a bug that resulted in only the first window size change
event being logged.
- Fixed a bug on HP-UX systems introduced in sudo 1.8.22 that
caused sudo to prompt for a password every time when tty-based
time stamp files were in use.
- Fixed a compilation problem on systems that define O_PATH or
O_SEARCH in fnctl.h but do not define O_DIRECTORY.
Bug #844.
Major changes between version 1.8.23 and 1.8.22:
- PAM account management modules and BSD auth approval modules are
now run even when no password is required.
- For kernel-based time stamps, if no terminal is present, fall
back to parent-pid style time stamps.
- The new cvtsudoers utility replaces both the
sudoers2ldif script and the visudo -x
functionality. It can read a file in either sudoers or
LDIF format and produce JSON, LDIF or sudoers output. It
is also possible to filter the generated output file by
user, group or host name.
- The file, ldap and sss sudoers backends now share a common set
of formatting functions for "sudo -l" output, which is also used
by the cvtsudoers utility.
- The /run directory is now used in preference to
/var/run if it exists.
Bug #822.
- More accurate descriptions of the --with-rundir and --with-vardir
configure options.
Bug #823.
- The setpassent() and setgroupent() functions are now used on systems
that support them to keep the passwd and group database open.
Sudo performs a lot of passwd and group lookups so it can be
beneficial to avoid opening and closing the files each time.
- The new case_insensitive_user and case_insensitive_group sudoers
options can be used to control whether sudo does case-sensitive
matching of users and groups in sudoers. Case insensitive
matching is now the default.
- Fixed a bug on some systems where sudo could hang on command
exit when I/O logging was enabled.
Bug #826.
- Fixed a problem with the process start time test in make check
when run in a Linux container. The test now uses the "btime"
field in /proc/stat to get the system start time instead
of using /proc/uptime, which is the container uptime.
Bug #829.
- When determining which temporary directory to use, sudoedit
now checks the directory for writability before using it. Previously,
sudoedit only performed an existence check.
Bug #827.
- Sudo now includes an optional set of Monty Python-inspired insults.
- Fixed the execution of scripts with an associated digest (checksum)
in sudoers on FreeBSD systems. FreeBSD does not have a full
/dev/fd directory mounted by default and its fexecve(2) is
not fully POSIX compliant when executing scripts.
Bug #831.
- Chinese (Taiwan) translation for sudo from
translationproject.org.
Major changes between version 1.8.22 and 1.8.21p2:
- Commands run in the background from a script run via sudo will
no longer receive SIGHUP when the parent exits and I/O logging
is enabled.
Bug #502.
- A particularly offensive insult is now disabled by default.
Bug #804.
- The description of sudo -i now correctly documents that
the env_keep and env_check sudoers options are
applied to the environment.
Bug #806.
- Fixed a crash when the system's host name is not set.
Bug #807.
- The sudoers2ldif script now handles #include
and #includedir directives.
- Fixed a bug where sudo would silently exit when the command was
not allowed by sudoers and the passwd_tries sudoers option
was set to a value less than one.
- Fixed a bug with the listpw and verifypw
sudoers options and multiple sudoers sources. If the option
is set to all a password should be required unless
none of a user's sudoers entries from any source require
authentication.
- Fixed a bug with the listpw and verifypw
sudoers options in the LDAP and SSSD back-ends. If the
option is set to any and the entry contained multiple
rules, only the first matching rule was checked. If an
entry contained more than one matching rule and the first
rule required authentication but a subsequent rule did not,
sudo would prompt for a password when it should not have.
- When running a command as the invoking user (not root), sudo
would execute the command with the same group vector it was
started with. Sudo now executes the command with a new group
vector based on the group database which is consistent with
how su(1) operates.
- Fixed a double free in the SSSD back-end that could occur when
ipa_hostname is present in sssd.conf and is set to an unqualified
host name.
- When I/O logging is enabled, sudo will now write to the terminal
even when it is a background process. Previously, sudo would
only write to the tty when it was the foreground process when
I/O logging was enabled. If the TOSTOP terminal flag is set,
sudo will suspend the command (and then itself) with the SIGTTOU
signal.
- A new authfail_message sudoers option that overrides the
default N incorrect password attempt(s).
- An empty sudoRunAsUser attribute in the LDAP and SSSD backends
will now match the invoking user. This is more consistent with
how an empty runas user in the sudoers file is treated.
- Documented that in check mode, visudo does not check the owner/mode
on files specified with the -f flag.
Bug #809.
- It is now an error to specify the runas user as an empty string
on the command line. Previously, an empty runas user was treated
the same as an unspecified runas user.
Bug #817.
- When timestamp_type option is set to tty
and a terminal is present, the time stamp record will now
include the start time of the session leader. When the
timestamp_type option is set to ppid or
when no terminal is available, the start time of the parent
process is used instead. This significantly reduces the
likelihood of a time stamp record being re-used when a user
logs out and back in again.
Bug #818.
- The sudoers time stamp file format is now documented in the new
sudoers_timestamp
manual.
- The timestamp_type option now takes a kernel
value on OpenBSD systems. This causes the tty-based time stamp
to be stored in the kernel instead of on the file system.
If no tty is present, the time stamp is considered to be invalid.
- Visudo will now use the SUDO_EDITOR environment variable (if
present) in addition to VISUAL and EDITOR.
Major changes between version 1.8.21p2 and 1.8.21p1:
- Fixed a bug introduced in version 1.8.21 which prevented sudo
from using the PAM-supplied prompt.
Bug #799.
- Fixed a bug introduced in version 1.8.21 which could result in
sudo hanging when running commands that exit quickly.
Bug #800.
- Fixed a bug introduced in version 1.8.21 which prevented the
command from being run when the password was read via an external
program using the askpass interface.
Bug #801.
Major changes between version 1.8.21p1 and 1.8.21:
- On systems that support both PAM and SIGINFO, the main sudo
process will no longer forward SIGINFO to the command if the
signal was generated from the keyboard. The command will have
already received SIGINFO since it is part of the same process
group so there's no need for sudo to forward it. This is
consistent with the handling of SIGINT, SIGQUIT and SIGTSTP.
Bug #796.
- If SUDOERS_SEARCH_FILTER in ldap.conf does not specify a value,
the LDAP search expression used when looking up netgroups and
non-Unix groups had a syntax error if a group plugin was not
specified.
- sudo -U otheruser -l will now have an exit value of 0 even
if otheruser has no sudo privileges. The exit value when a
user attempts to lists their own privileges or when a command
is specified is unchanged.
- Fixed a regression introduced in sudo 1.8.21 where sudoreplay
playback would hang for I/O logs that contain terminal input.
- Sudo 1.8.18 contained an incomplete fix for the matching of
entries in the LDAP and SSSD backends when a sudoRunAsGroup is
specified but no sudoRunAsUser is present in the sudoRole.
Major changes between version 1.8.21 and 1.8.20p2:
- The path that sudo uses to search for terminal devices can now
be configured via the new devsearch Path setting in
sudo.conf.
- It is now possible to preserve bash shell functions in the
environment when the "env_reset" sudoers setting is disabled by
removing the "*=()*" pattern from the env_delete list.
- A change made in sudo 1.8.15 inadvertantly caused sudoedit to
send itself SIGHUP instead of exiting when the editor returns
an error or the file was not modified.
- Sudoedit now uses an exit code of zero if the file was not
actually modified. Previously, sudoedit treated a lack of
modifications as an error.
- When running a command in a pseudo-tty (pty), sudo now
copies a subset of the terminal flags to the new pty. Previously,
all flags were copied, even those not appropriate for a pty.
- Fixed a problem with debug logging in the sudoers I/O logging
plugin.
- Window size change events are now logged to the policy plugin.
On xterm and compatible terminals, sudoreplay is now capable of
resizing the terminal to match the size of the terminal the
command was run on. The new -R option can be used to disable
terminal resizing.
- Fixed a bug in visudo where a newly added file was not checked
for syntax errors.
Bug #791.
- Fixed a bug in visudo where if a syntax error in an include
directory (like /etc/sudoers.d) was detected, the
edited version was left as a temporary file instead of being installed.
- On PAM systems, sudo will now treat username's Password:
as a standard password prompt. As a result, the SUDO_PROMPT
environment variable will now override username's Password:
as well as the more common Password:. Previously, the
passprompt_override Defaults setting would need to be set
for SUDO_PROMPT to override a prompt of
username's Password:.
- A new syslog_pid sudoers setting has been added to include
sudo's process ID along with the process name when logging via
syslog.
Bug #792.
- Fixed a bug introduced in sudo 1.8.18 where a command would
not be terminated when the I/O logging plugin returned an error
to the sudo front-end.
- A new timestamp_type sudoers setting has been added
that replaces the tty_tickets option. In addition
to tty and global time stamp records, it is now possible
to use the parent process ID to restrict the time stamp to
commands run by the same process, usually the shell.
Bug #793.
- The --preserve-env command line option has been extended to
accept a comma-separated list of environment variables to preserve.
- A new Friulian translation from
translationproject.org.
Major changes between version 1.8.20p2 and 1.8.20p1:
- Fixed a bug parsing /proc/pid/stat
on Linux when the process name contain a newline.
This is not exploitable due to the /dev
traversal changes made in sudo 1.8.20p1.
Major changes between version 1.8.20p1 and 1.8.20:
- Fixed "make check" when using OpenSSL or GNU crypt.
Bug #787.
- Fixed
CVE-2017-1000367, a bug parsing /proc/pid/stat
on Linux when the process name contains spaces. Since the
user has control over the command name, this could potentially
be used by a user with sudo access to overwrite an arbitrary
file on systems with SELinux enabled. Also stop performing
a breadth-first traversal of /dev when looking for
the device; only a hard-coded list of directories are
checked,
Major changes between version 1.8.20 and 1.8.19p2:
- Added support for SASL_MECH in ldap.conf.
Bug #764.
- Added support for digest matching when the command is a glob-style
pattern or a directory. Previously, only explicit path matches
supported digest checks.
- New fdexec Defaults option to control whether a command
is executed by path or by open file descriptor.
- The embedded copy of zlib has been upgraded to version 1.2.11.
- Fixed a bug that prevented sudoers include files with a relative
path starting with the letter 'i' from being opened.
Bug #776.
- Added support for command timeouts in sudoers. The command will
be terminated if the timeout expires.
- The SELinux role and type are now displayed in the sudo -l
output for the LDAP and SSSD backends, just as they are in the
sudoers backend.
- A new command line option, -T, can be used to specify a command
timeout as long as the user-specified timeout is not longer than
the timeout specified in sudoers. This option may only be
used when the user_command_timeouts flag is enabled in sudoers.
- Added NOTBEFORE and NOTAFTER command options
to the sudoers
backend similar to what is already available in the LDAP backend.
- Sudo can now optionally use the SHA2 functions in OpenSSL or GNU
crypt instead of the SHA2 implementation bundled with sudo.
- Fixed a compilation error on systems without the stdbool.h header
file.
Bug #778.
- Fixed a compilation error in the standalone Kerberos V authentication
module.
Bug #777.
- Added the iolog_flush flag to sudoers which causes I/O
log data to be written immediately to disk instead of being buffered.
- I/O log files are now created with group ID 0 by default unless
the iolog_user or iolog_group options are set
in sudoers.
- It is now possible to store I/O log files on an NFS-mounted
file system where uid 0 is remapped to an unprivileged user.
The iolog_user option must be set to a non-root user and the
top-level I/O log directory must exist and be owned by that user.
- Added the restricted_env_file setting to sudoers which is
similar to env_file but its contents are subject to the same
restrictions as variables in the invoking user's environment.
- Fixed a use after free bug in the SSSD backend when the fqdn
sudoOption is set and no hostname value is present in sssd.conf.
- Fixed a typo that resulted in a compilation error on systems
where the killpg() function is not found by configure.
- Fixed a compilation error with the bundled version of zlib
when sudo was built outside the source tree.
- Fixed the exit value of sudo when the command is terminated by
a signal other than SIGINT. This was broken in sudo 1.8.15 by
the fix for
Bug #722
Bug #784.
- Fixed exponential behavior in sudo's glob() replacement
with respect to multiple '*' characters.
- Sudo no longer needs to display a message when a command
running in a pseudo-tty is killed by a signal. Now that
the main sudo process delivers the same signal to itself
the parent shell will display the message itself.
- Fixed a regression introduced in sudo 1.8.18 where the
lecture option could not be used in a positive
boolean context, only a negative one.
- Fixed an issue where sudo would consume stdin if it was not connected
to a tty even if log_input is not enabled in sudoers.
Bug #786.
Major changes between version 1.8.19p2 and 1.8.19p1:
- Fixed a crash in visudo introduced in sudo 1.8.9 when an IP address
or network is used in a host-based Defaults entry.
Bug #766.
- Added a missing check for the ignore_iolog_errors flag when
the sudoers plugin generates the I/O log file path name.
- Fixed a typo in sudo's vsyslog() replacement that resulted in
garbage being logged to syslog.
Major changes between version 1.8.19p1 and 1.8.19:
- Fixed a bug introduced in sudo 1.8.19 that resulted in the wrong
syslog priority and facility being used.
Major changes between version 1.8.19 and 1.8.18p1:
- New syslog_maxlen Defaults option to control the maximum
size of syslog messages generated by sudo.
- Sudo has been run against PVS-Studio and any issues that were
not false positives have been addressed.
- I/O log files are now created same group ID as the parent directory
and not the invoking user's group ID.
- I/O log permissions and ownership are now configurable via the
iolog_mode, iolog_user and iolog_group
sudoers Defaults variables.
- Fixed configuration of the sudoers I/O log plugin debug subsystem.
Previously, I/O log information was not being written to the
sudoers debug log.
- Fixed a bug in visudo that broke editing of files in an include
dir that have a syntax error. Normally, visudo does not edit
those files, but if a syntax error is detected in one, the user
should get a chance to fix it.
- Warnings about unknown or unparsable sudoers Defaults entries now
include the file and line number of the problem.
- Visudo will now use the file and line number information about an
unknown or unparsable Defaults entry to go directly to the file
with the problem.
- Fixed a bug in the sudoers LDAP back-end where a negated sudoHost
entry would prevent other sudoHost entries following it from matching.
- Warnings from visudo about a cycle in an Alias entry now include the
file and line number of the problem.
- In strict mode, visudo will now use the file and line number
information about a cycle in an Alias entry to go directly to the
file with the problem.
- The sudo_noexec.so file is now linked with -ldl on systems that
require it for the wordexp() wrapper.
- Fixed linking of sudo_noexec.so on macOS systems where it must be
a dynamic library and not a module.
- Sudo's "make check" now includes a test for sudo_noexec.so
working.
- The sudo front-end now passes the user's umask to the plugin.
Previously the plugin had to determine this itself.
- Sudoreplay can now display the stdin and
ttyin streams when they
are explicitly added to the filter list.
- Fixed a bug introduced in sudo 1.8.17 where the "all" setting
for verifypw and listpw was not being honored.
Bug #762.
- The syslog priority (syslog_goodpri and
syslog_badpri) can now be negated or set to
none to disable logging of successful or
unsuccessful sudo attempts via syslog.
Major changes between version 1.8.18p1 and 1.8.18:
- When sudo_noexec.so is used, the WRDE_NOCMD flag is now added
if the wordexp() function is called. This prevents commands
from being run via wordexp() without disabling it entirely.
- On Linux systems, sudo_noexec.so now uses a seccomp filter to
disable execute access if the kernel supports seccomp. This is
more robust than the traditional method of using stub functions
that return an error.
Major changes between version 1.8.18 and 1.8.17p1:
- The sudoers locale is now set before parsing the sudoers file.
If sudoers_locale is set in sudoers, it is applied before
evaluating other Defaults entries. Previously, sudoers_locale
was used when evaluating sudoers but not during the inital parse.
Bug #748.
- A missing or otherwise invalid #includedir is now ignored instead
of causing a parse error.
- During "make install", backup files are only used on HP-UX where
it is not possible to unlink a shared object that is in use.
This works around a bug in ldconfig on Linux which could create
links to the backup shared library file instead of the current
one.
- Fixed a bug introduced in 1.8.17 where sudoers entries with long
commands lines could be truncated, preventing a match.
Bug #752.
- The fqdn, runas_default and sudoers_locale Defaults settings are
now applied before any other Defaults settings since they can
change how other Defaults settings are parsed.
- On systems without the O_NOFOLLOW open(2) flag, when the NOFOLLOW
flag is set, sudoedit now checks whether the file is a symbolic link
before opening it as well as after the open.
Bug #753.
- Sudo will now only resolve a user's group IDs to group names
when sudoers includes group-based permissions. Group lookups
can be expensive on some systems where the group database is
not local.
- If the file system holding the sudo log file is full, allow
the command to run unless the new ignore_logfile_errors Defaults
option is disabled.
Bug #751.
- The ignore_audit_errors and ignore_iolog_errors Defaults options
have been added to control sudo's behavior when it is unable to
write to the audit and I/O logs.
- Fixed a bug introduced in 1.8.17 where the SIGPIPE signal handler
was not being restored when sudo directly executes the command.
- Fixed a bug where sudo -l command would indicate that a
command was runnable even when denied by sudoers when using the
LDAP or SSSD backends.
- The match_group_by_gid Defaults option has been added to allow
sites where group name resolution is slow and where sudoers only
contains a small number of groups to match groups by group ID
instead of by group name.
- Fixed a bug on Linux where a 32-bit sudo binary could fail with
an "unable to allocate memory" error when run on a 64-bit system.
Bug #755.
- When parsing ldap.conf, sudo will now only treat a '#' character
as the start of a comment when it is at the beginning of the
line.
- Fixed a potential crash when auditing is enabled and the audit
function fails with an error.
Bug #756.
- Norwegian Nynorsk translation for sudo from
translationproject.org.
- Fixed a typo that broke short host name matching when the fqdn
flag is enabled in sudoers.
Bug #757.
- Negated sudoHost attributes are now supported by the LDAP and
SSSD backends.
- Fixed matching entries in the LDAP and SSSD backends when a
RunAsGroup is specified but no RunAsUser is present.
- Fixed sudo -l output in the LDAP and SSSD backends when
a RunAsGroup is specified but no RunAsUser is present.
Major changes between version 1.8.17p1 and 1.8.17:
- Fixed a bug introduced in 1.8.17 where the user's groups were
not set on systems that don't use PAM.
Bug #749.
Major changes between version 1.8.17 and 1.8.16:
- On AIX, if /etc/security/login.cfg has auth_type set to
PAM_AUTH but pam_start(3) fails, fall back to AIX authentication.
Bug #740.
- Sudo now takes all sudoers sources into account when determining
whether or not sudo -l or sudo -b should
prompt for a password. In other words, if both file and
ldap sudoers sources are in specified in /etc/nsswitch.conf,
sudo -v will now require that all entries in both
sources be have NOPASSWD (file) or !authenticate
(ldap) in the entries.
- Sudo now ignores SIGPIPE until the command is executed.
Previously, SIGPIPE was only ignored in a few select places.
Bug #739.
- Fixed a bug introduced in sudo 1.8.14 where (non-syslog) log
file entries were missing the newline when loglinelen is set to
a non-positive number.
Bug #742.
- Unix groups are now set before the plugin session intialization
code is run. This makes it possible to use dynamic groups with
the Linux-PAM pam_group module.
- Fixed a bug where a debugging statement could dereference a NULL
pointer when looking up a group that doesn't exist
Bug #743.
- Sudo has been run through the
Coverity
code scanner. A number of minor bugs have been fixed as a
result. None were security issues.
- SELinux support, which was broken in 1.8.16, has been repaired.
- Fixed a bug when logging I/O where all output buffers might not
get flushed at exit.
- Forward slashes are no longer escaped in the JSON output of
visudo -x. This was never required by the standard and
not escaping them improves readability of the output.
- Sudo no longer treats PAM_SESSION_ERR as a fatal error when
opening the PAM session. Other errors from pam_open_session()
are still treated as fatal. This avoids the policy plugin
failed session initialization error message seen on some systems.
- Korean translation for sudo and sudoers from
translationproject.org.
- The sssd backend now properly handles sudo -U otheruser -l.
- The sssd backend now uses the value of ipa_hostname from
sssd.conf, if specified.
- Fixed a hang on some systems when the command is being run
in a pty and it failed to execute.
- When performing a wildcard match in sudoers, check for an exact
string match if the user command was fully-qualified (or resolved
via the PATH). This fixes an issue executing scripts on Linux
when there are multiple wildcard matches with the same base name.
Bug #746.
Major changes between version 1.8.16 and 1.8.15:
- Fixed a compilation error on Solaris 10 with Stun Studio 12.
Bug #727.
- When preserving variables from the invoking user's environment, if
there are duplicates sudo now only keeps the first instance.
- Fixed a bug that could cause warning mail to be sent in list
mode (sudo -l) for users without sudo privileges when the
LDAP and SSSD backends are used.
- Fixed a bug that prevented the "mail_no_user" option from working
properly with the LDAP backend.
- In the LDAP and SSSD backends, white space is now ignored between
an operator (!, +, +=, -=) when parsing a sudoOption.
- It is now possible to disable Path settings in sudo.conf
by omitting the path name.
- The sudoedit_checkdir Defaults option is now enabled by default
and has been extended. When editing files with sudoedit, each
directory in the path to be edited is now checked. If a directory
is writable by the invoking user, symbolic links will not be
followed. If the parent directory of the file to be edited is
writable, sudoedit will refuse to edit it.
Bug #707.
- The netgroup_tuple Defaults option has been added to enable matching
of the entire netgroup tuple, not just the host or user portion.
Bug #717.
- When matching commands based on the SHA2 digest, sudo will now
use fexecve(2) to execute the command if it is available. This
fixes a time of check versus time of use race condition when the
directory holding the command is writable by the invoking user.
- On AIX systems, sudo now caches the auth registry string along
with password and group information. This fixes a potential
problem when a user or group of the same name exists in multiple
auth registries. For example, local and LDAP.
- Fixed a crash in the SSSD backend when the invoking user is not
found.
Bug #732.
- Added the --enable-asan configure flag to enable address sanitizer
support. A few minor memory leaks have been plugged to quiet
the ASAN leak detector.
- The value of _PATH_SUDO_CONF may once again be overridden via
Bug #735.
- The sudoers2ldif script now handles multiple roles with same name.
- Fixed a compilation error on systems that have the posix_spawn()
and posix_spawnp() functions but an unusable spawn.h header.
Bug #730.
- Fixed support for negating character classes in sudo's version
of the fnmatch() function.
- Fixed a bug in the LDAP and SSSD backends that could allow an
unauthorized user to list another user's privileges.
Bug #738.
- The PAM conversation function now works around an ambiguity in the
PAM spec with respect to multiple messages.
Bug #726.
- Updated translations from
translationproject.org.
Major changes between version 1.8.15 and 1.8.14p3:
- Fixed a bug that prevented sudo from building outside the source tree
on some platforms.
Bug #708.
- Fixed the location of the sssd library in the RHEL/Centos packages.
Bug #710.
- Fixed a build problem on systems that don't implicitly include
sys/types.h from other header files.
Bug #711.
- Fixed a problem on Linux using containers where sudo would ignore
signals sent by a process in a different container.
- Sudo now refuses to run a command if the PAM session module
returns an error.
- When editing files with sudoedit, symbolic links will no longer
be followed by default. The old behavior can be restored by
enabling the sudoedit_follow option in sudoers or on a per-command
basis with the FOLLOW and NOFOLLOW tags.
Bug #707.
- Fixed a bug introduced in version 1.8.14 that caused the last
valid editor in the sudoers "editor" list to be used by visudo
and sudoedit instead of the first.
Bug #714.
- Fixed a bug in visudo that prevented the addition of a final
newline to edited files without one.
- Fixed a bug decoding certain base64 digests in sudoers when the
intermediate format included a '=' character.
- Individual records are now locked in the time stamp file instead
of the entire file. This allows sudo to avoid prompting for a
password multiple times on the same terminal when used in a
pipeline. In other words, sudo cat foo | sudo grep bar
now only prompts for the password once. Previously, both sudo
processes would prompt for a password, often making it impossible
to enter.
Bug #705.
- Fixed a bug where sudo would fail to run commands as a non-root
user on systems that lack both setresuid() and setreuid().
Bug #713.
- Fixed a bug introduced in sudo 1.8.14 that prevented visudo
from re-editing the correct file when a syntax error was detected.
- Fixed a bug where sudo would not relay a SIGHUP signal to the
command when the terminal is closed and the command is not run
in its own pseudo-tty.
Bug #719.
- If some, but not all, of the LOGNAME, USER
or USERNAME environment variables have been preserved
from the invoking user's environment, sudo will now use the
preserved value to set the remaining variables instead of
using the runas user. This ensures that if, for example,
only LOGNAME is present in the env_keep list, that
sudo will not set USER and USERNAME to
the runas user.
- When the command sudo is running dies due to a signal, sudo
will now send itself that same signal with the default
signal handler installed instead of exiting. The bash shell
appears to ignore some signals, e.g. SIGINT, unless
the command being run is killed by that signal. This makes
the behavior of commands run under sudo the same as without
sudo when bash is the shell.
Bug #722.
- Slovak translation for sudo from
translationproject.org.
- Hungarian and Slovak translations for sudoers from
translationproject.org.
- Previously, when env_reset was enabled (the default) and the -s
option was not used, the SHELL environment variable was set to the
shell of the invoking user. Now, when env_reset is enabled and
the -s option is not used, SHELL is set based on the target user.
- Fixed challenge/response style BSD authentication.
- Added the sudoedit_checkdir Defaults option to prevent
sudoedit from editing files located in a directory that is writable by
the invoking user.
- Added the always_query_group_plugin Defaults option to control
whether groups not found in the system group database are passed
to the group plugin. Previously, unknown system groups were
always passed to the group plugin.
- When creating a new file, sudoedit will now check that the file's
parent directory exists before running the editor.
- Fixed the compiler stack protector test in configure for compilers
that support -fstack-protector but don't actually have the
ssp library available.
Major changes between version 1.8.14p3 and 1.8.14p2:
- Fixed a bug introduced in sudo 1.8.14p2 that prevented sudo
from working when no tty was present.
Bug #706.
- Fixed tty detection on newer AIX systems where dev_t is 64-bit.
Major changes between version 1.8.14p2 and 1.8.14p1:
- Fixed a bug introduced in sudo 1.8.14 that prevented the lecture
file from being created.
Bug #704.
Major changes between version 1.8.14p1 and 1.8.14:
- Fixed a bug introduced in sudo 1.8.14 that prevented the sssd
backend from working.
Bug #703.
Major changes between version 1.8.14 and 1.8.13:
- Log messages on Mac OS X now respect sudoers_locale when sudo
is build with NLS support.
- The sudo manual pages now pass mandoc -Tlint with no warnings.
- Fixed a compilation problem on systems with the sig2str()
function that do not define SIG2STR_MAX in signal.h.
- Worked around a compiler bug that resulted in unexpected behavior
when returning an int from a function declared to return bool
without an explicit cast.
- Worked around a bug in Mac OS X 10.10 BSD auditing where the
au_preselect() fails for AUE_sudo events but
succeeds for AUE_DARWIN_sudo.
- Fixed a hang on Linux systems with glibc when sudo is linked with
jemalloc.
- When the user runs a command as a user ID that is not present in
the password database via the -u flag, the command is now run
with the group ID of the invoking user instead of group ID 0.
- Fixed a compilation problem on systems that don't pull in
definitions of uid_t and gid_t without sys/types.h or unistd.h.
- Fixed a compilation problem on newer AIX systems which use a
struct st_timespec for time stamps in struct stat that differs
from struct timespec.
Bug #702.
- The example directory is now configurable via --with-exampledir
and defaults to DATAROOTDIR/examples/sudo on BSD systems.
- The /usr/lib/tmpfiles.d/sudo.conf file is now installed
as part of "make install" when systemd is in use.
- Fixed a linker problem on some systems with libintl.
Bug #690.
- Fixed compilation with compilers that don't support __func__
or __FUNCTION__.
- Sudo no longer needs to uses weak symbols to support localization
in the warning functions. A registration function is used instead.
- Fixed a setresuid() failure in sudoers on Linux kernels where
uid changes take the nproc resource limit into account.
- Fixed LDAP netgroup queries on AIX.
- Sudo will now display the custom prompt on Linux systems with PAM
even if the "Password: " prompt is not localized by the PAM module.
Bug #701.
- Double-quoted values in an LDAP sudoOption are now supported
for consistency with file-based sudoers.
- Fixed a bug that prevented the btime entry in /proc/stat
from being parsed on Linux.
Major changes between version 1.8.13 and 1.8.12:
- The examples directory is now a subdirectory of the doc dir to
conform to Debian guidelines.
Bug #682.
- Fixed a compilation error for siglist.c and signame.c on some
systems.
Bug #686.
- Weak symbols are now used for sudo_warn_gettext() and
sudo_warn_strerror() in libsudo_util to avoid link errors
when -Wl,--no-undefined is used in LDFLAGS.
The --disable-weak-symbols configure option can be used
to disable the user of weak symbols.
- Fixed a bug in sudo's mkstemps() replacement function that
prevented the file extension from being preserved in sudoedit.
- A new mail_all_cmnds sudoers flag will send mail when a user runs
a command (or tries to). The behavior of the mail_always flag has
been restored to always send mail when sudo is run.
- New MAIL and NOMAIL command tags have been added
to toggle mail sending behavior on a per-command (or Cmnd_Alias) basis.
- Fixed matching of empty passwords when sudo is configured to
use passwd (or shadow) file authentication on systems where the
crypt() function returns NULL for invalid salts.
- On AIX, sudo now uses the value of the auth_type setting
in /etc/security/login.cfg to determine whether
to use LAM or PAM for user authentication.
- The all setting for listpw and verifypw now works
correctly with LDAP and sssd sudoers.
- The sudo timestamp directory is now created at boot time on
platforms that use systemd.
- Sudo will now restore the value of the SIGPIPE handler before
executing the command.
- Sudo now uses struct timespec instead of
struct timeval for time keeping when possible. If
supported, sudoedit and visudo now use nanosecond granularity
time stamps.
- Fixed a symbol name collision with systems that have their
own SHA2 implementation. This fixes a problem where PAM
could use the wrong SHA2 implementation on Solaris 10 systems
configured to use SHA512 for passwords.
- The editor invoked by sudoedit once again uses an unmodified
copy of the user's environment as per the documentation.
This was inadvertantly changed in sudo 1.8.0.
Bug #688.
Major changes between version 1.8.12 and 1.8.11p2:
- The embedded copy of zlib has been upgraded to version 1.2.8 and
is now installed as a shared library where supported.
- Debug settings for the sudo front end and sudoers plugin are now
configured separately.
- Multiple sudo.conf Debug entries may now be specified per program
(or plugin).
- The plugin API has been extended such that the path to the plugin
that was loaded is now included in the settings array. This
path can be used to register with the debugging subsystem. The
debug_flags setting is now prefixed with a file name and may be
specified multiple times if there is more than one matching Debug
setting in sudo.conf.
- The sudoers regression tests now run with the locale set to C
since some of the tests compare output that includes locale-specific
messages.
Bug #672.
- Fixed a bug where sudo would not run commands on Linux when
compiled with audit support if audit is disabled.
Bug #671.
- Added __BASH_FUNC< to the environment blacklist to match
Apple's syntax for newer-style bash functions.
- The default password prompt now includes a trailing space after
"Password:" for consistency with su(1) on most systems.
Bug #663.
- Fixed a problem on DragonFly BSD where SIGCHLD could be ignored,
preventing sudo from exiting.
Bug #676.
- Visudo will now use the optional sudoers_file,
sudoers_mode, sudoers_uid and
sudoers_gid arguments if specified on the sudoers.so
Plugin line in the sudo.conf file.
- Fixed a problem introduced in sudo 1.8.8 that prevented the full
host name from being used when the fqdn sudoers option is used.
Bug #678.
- French and Russian translations for sudoers from
translationproject.org.
- Sudo now installs a handler for SIGCHLD signal handler immediately
before stating the process that will execute the command (or
start the monitor). The handler used to be installed earlier
but this causes problems with poorly behaved PAM modules that
install their own SIGCHLD signal handler and neglect to restore
sudo's original handler.
Bug #657.
- Removed a limit on the length of command line arguments
expanded by a wild card using sudo's version of the
fnmatch() function. This limit was introduced
when sudo's version of fnmatch() was replaced in
sudo 1.8.4.
- LDAP-based sudoers can now query an LDAP server for a user's
netgroups directly. This is often much faster than fetching
every sudoRole object containing a sudoUser that begins with a
`+' prefix and checking whether the user is a member of any of
the returned netgroups.
- The mail_always sudoers option no longer sends mail for
sudo -l or sudo -v unless the user is unable
to authenticate themselves.
- Fixed a crash when sudo is run with an empty argument vector.
- Fixed two potential crashes when sudo is run with very low
resource limits.
- The TZ environment variable is now checked for safety instead
of simply being copied to the environment of the command.
This fixes a potential security issue.
Major changes between version 1.8.11p2 and 1.8.11p1:
- Fixed a bug where dynamic shared objects loaded from a plugin
could use the hooked version of getenv() but not
the hooked versions of putenv(), setenv()
or unsetenv(). This can cause problems for PAM
modules that use those functions.
Major changes between version 1.8.11p1 and 1.8.11:
- Fixed a compilation problem on some systems when the
--disable-shared-libutil configure option was specified.
- The user can no longer interrupt the sleep after an incorrect
password on PAM systems using pam_unix.
Bug #666.
- Fixed a compilation problem on Linux systems that do not use PAM.
Bug #667.
- "make install" will now work with the stock GNU autotools
install-sh script.
Bug #669.
- Fixed a crash with "sudo -i" when the current working directory
does not exist.
Bug #670.
- Fixed a potential crash in the debug subsystem when logging a message
larger that 1024 bytes.
- Fixed a "make check" failure for ttyname when stdin is closed and
stdout and stderr are redirected to a different tty.
Bug #643.
- Added BASH_FUNC_* to environment blacklist to match newer-style
bash functions.
Major changes between version 1.8.11 and 1.8.10p3:
- The sudoers plugin no longer uses setjmp/longjmp to recover
from fatal errors. All errors are now propagated to the caller
via return codes.
- When running a command in the background, sudo will now forward
SIGINFO to the command (if supported).
- Sudo will now use the system versions of the sha2 functions from
libc or libmd if available.
- Visudo now works correctly on GNU Hurd.
Bug #647.
- Fixed suspend and resume of curses programs on some system when
the command is not being run in a pseudo-terminal.
Bug #649.
- Fixed a crash with LDAP-based sudoers on some systems when
Kerberos was enabled.
- Sudo now includes optional Solaris audit support.
- Catalan translation for sudoers from
translationproject.org.
- Norwegian Bokmaal translation for sudo from
translationproject.org.
- Greek translation for sudoers from
translationproject.org.
- The sudo source tree has been reorganized to more closely resemble
that of other gettext-enabled packages.
- Sudo and its associated programs now link against a shared version
of libsudo_util. The --disable-shared-libutil configure option
may be used to force static linking if the --enable-static-sudoers
option is also specified.
- The passwords in ldap.conf and ldap.secret may now be encoded
in base64.
- Audit updates. SELinux role changes are now audited. For
sudoedit, we now audit the actual editor being run, instead of
just the sudoedit command.
- Fixed bugs in the man page post-processing that could cause
portions of the manuals to be removed.
- Fixed a crash in the system_group plugin.
Bug #653.
- Fixed sudoedit on platforms without a native version of the
getprogname() function.
Bug #654.
- Fixed compilation problems with some pre-C99 compilers.
- Fixed sudo's -C option which was broken in version 1.8.9.
- It is now possible to match an environment variable's value as
well as its name using env_keep and env_check.
This can be used to preserve bash functions which would otherwise
be removed from the environment.
- New files created via sudoedit as a non-root user now have the
proper group id.
Bug #656.
- Sudoedit now works correctly in conjunction with sudo's SELinux
RBAC support. Temporary files are now created with the proper
security context.
- The sudo I/O logging plugin API has been updated. If a logging
function returns an error, the command will be terminated and
all of the plugin's logging functions will be disabled. If a
logging function rejects the command's output it will no longer
be displayed to the user's terminal.
- Fixed a compilation error on systems that lack openpty(), _getpty()
and grantpt().
Bug #660.
- Fixed a hang when a sudoers source is listed more than once in
a single sudoers nsswitch.conf entry.
- On AIX, shell scripts without a #! magic number are now passed to
/usr/bin/sh, not /usr/bin/bsh. This is
consistent with what the execvp() function on AIX does and
matches historic sudo behavior.
Bug #661.
- Fixed a cross-compilation problem building mksiglist and mksigname.
Bug #662.
Major changes between version 1.8.10p3 and 1.8.10p2:
- Fixed expansion of the %p escape in the prompt for
"sudo -l" when rootpw, runaspw or targetpw is set.
Bug #639.
- Fixed matching of uids and gids which was broken in version 1.8.9.
Bug #640.
- PAM credential initialization has been re-enabled. It was
unintentionally disabled by default in version 1.8.8. The way
credentials are initialized has also been fixed.
Bug #642.
- Fixed a descriptor leak on Linux when determing boot time. Sudo
normally closes extra descriptors before running a command so
the impact is limited.
Bug #645.
- Fixed flushing of the last buffer of data when I/O logging is
enabled. This bug, introduced in version 1.8.9, could cause
incomplete command output on some systems.
Bug #646.
Major changes between version 1.8.10p2 and 1.8.10p1:
- Fixed a hang introduced in sudo 1.8.10 when timestamp_timeout
is set to zero.
Bug #638.
Major changes between version 1.8.10p1 and 1.8.10:
- Fixed a bug introduced in sudo 1.8.10 that prevented the disabling
of tty-based tickets.
- Fixed a bug with netgated commands in "sudo -l command" that
could cause the command to be listed even when it was explicitly
denied. This only affected list mode when a command was specified.
Bug #636.
Major changes between version 1.8.10 and 1.8.9p5:
- It is now possible to disable network interface probing in
sudo.conf by changing the value of the probe_interfaces
setting.
- When listing a user's privileges (sudo -l), the sudoers plugin
will now prompt for the user's password even if the targetpw,
rootpw or runaspw options are set.
- The sudoers plugin uses a new format for its time stamp files.
Each user now has a single file which may contain multiple records
when per-tty time stamps are in use (the default). The time
stamps use a monotonic timer where available and are once again
located in a directory under /var/run. The lecture status is
now stored separately from the time stamps in a different directory.
Bug #616.
- sudo's -K option will now remove all of the user's time stamps,
not just the time stamp for the current terminal. The -k option
can be used to only disable time stamps for the current terminal.
- If sudo was started in the background and needed to prompt for
a password, it was not possible to suspend it at the password
prompt. This now works properly.
- LDAP-based sudoers now uses a default search filter of
(objectClass=sudoRole) for more efficient queries.
The netgroup query has been modified to avoid falling below
the minimum length for OpenLDAP substring indices.
- The new use_netgroups sudoers option can be used to explicitly
enable or disable netgroups support. For LDAP-based sudoers,
netgroup support requires an expensive substring match on the
server. If netgroups are not needed, this option can be disabled
to reduce the load on the LDAP server.
- Sudo is once again able to open the sudoers file when the group
on sudoers doesn't match the expected value, so long as the file
is not group writable.
- Sudo now installs an init.d script to clear the time stamp
directory at boot time on AIX and HP-UX systems. These systems
either lack /var/run or do not clear it on boot.
- The JSON format used by visudo -x now properly supports the
negation operator. In addition, the Options object is now the
same for both Defaults and Cmnd_Specs.
- Czech and Serbian translations for sudoers from
translationproject.org.
- Catalan translation for sudo from
translationproject.org.
Major changes between version 1.8.9p5 and 1.8.9p4:
- Fixed a compilation error on AIX when LDAP support is enabled.
- Fixed parsing of the "umask" defaults setting in sudoers.
Bug #632.
- Fixed a failed assertion when the "closefrom_override" defaults
setting is enabled in sudoers and sudo's -C flag is used.
Bug #633.
Major changes between version 1.8.9p4 and 1.8.9p3:
- Fixed a bug where sudo could consume large amounts of CPU while
the command was running when I/O logging is not enabled.
Bug #631.
- Fixed a bug where sudo would exit with an error when the debug
level is set to util@debug or all@debug and
I/O logging is not enabled. The command would continue runnning
after sudo exited.
Major changes between version 1.8.9p3 and 1.8.9p2:
- Fixed a bug introduced in sudo 1.8.9 that prevented the tty name
from being resolved properly on Linux systems.
Bug #630.
Major changes between version 1.8.9p2 and 1.8.9p1:
- Updated config.guess, config.sub and libtool to support the
ppc64le architecture (IBM PowerPC Little Endian).
Major changes between version 1.8.9p1 and 1.8.9:
- Fixed a problem with gcc 4.8's handling of bit fields that
could lead to the noexec flag being enabled even when it
was not explicitly set.
Major changes between version 1.8.9 and 1.8.8:
- Reworked sudo's main event loop to use a simple event subsystem
using poll(2) or select(2) as the back end.
- It is now possible to statically compile the sudoers plugin
into the sudo binary without disabling shared library support. The
sudo.conf file may still be used to configure other plugins.
- Sudo can now be compiled again with a C preprocessor that does
not support variadic macros.
- Visudo can now export a sudoers file in JSON format using the
new -x flag.
- The locale is now set correctly again for visudo and
sudoreplay.
- The plugin API has been extended to allow the plugin to exclude
specific file descriptors from the closefrom range.
- There is now a workaround for a Solaris-specific problem where
NOEXEC was overriding traditional root DAC behavior.
- Add user netgroup filtering for SSSD. Previously, rules for
a netgroup were applied to all even when they did not belong
to the specified netgroup.
- On systems with BSD login classes, if the user specified a group
(not a user) to run the command as, it was possible to specify
a different login class even when the command was not run as the
super user.
- The closefrom() emulation on Mac OS X now uses
/dev/fd if possible.
- Fixed a bug where sudoedit would not update the original
file from the temporary when PAM or I/O logging is not enabled.
- When recycling I/O logs, the log files are now truncated properly.
- Fixes bugs #617, #621, #622, #623, #624, #625, #626
Major changes between version 1.8.8 and 1.8.7:
- Removed a warning on PAM systems with stacked auth modules
where the first module on the stack does not succeed.
- Sudo, sudoreplay and visudo now support GNU-style long options.
- The -h (--host) option may now be used to specify
a host name. This is currently only used by the sudoers plugin in
conjunction with the -l (--list) option.
- Program usage messages and manual SYNOPSIS sections have been
simplified.
- Sudo's LDAP SASL support now works properly with Kerberos.
Previously, the SASL library was unable to locate the user's
credential cache.
- It is now possible to set the nproc resource limit to unlimited
via pam_limits on Linux (bug #565).
- New pam_service and pam_login_service sudoers
options that can be used to specify the PAM service name to use.
- New pam_session and pam_setcred sudoers options that
can be used to disable PAM session and credential support.
- The sudoers plugin now properly supports UIDs and GIDs
that are larger than 0x7fffffff on 32-bit platforms.
- Fixed a visudo bug introduced in sudo 1.8.7 where per-group
Defaults entries would cause an internal error.
- If the tty_tickets sudoers option is enabled (the default),
but there is no tty present, sudo will now use a ticket file
based on the parent process ID. This makes it possible to support
the normal timeout behavior for the session.
- Fixed a problem running commands that change their process
group and then attempt to change the terminal settings when not
running the command in a pseudo-terminal. Previously, the process
would receive SIGTTOU since it was effectively a background
process. Sudo will now grant the child the controlling tty and
continue it when this happens.
- The closefrom_override sudoers option may now be used in
a command-specified Defaults entry (bug #610).
- Sudo's BSM audit support now works on Solaris 11.
- Brazilian Portuguese translation for sudo and sudoers from
translationproject.org.
- Czech translation for sudo from
translationproject.org.
- French translation for sudo from
translationproject.org.
- Sudo's noexec support on Mac OS X 10.4 and above now uses dynamic
symbol interposition instead of setting
DYLD_FORCE_FLAT_NAMESPACE=1
which causes issues with some programs.
- Fixed visudo's -q (--quiet) flag,
broken in sudo 1.8.6.
- Root may no longer change its SELinux role without entering
a password.
- Fixed a bug introduced in Sudo 1.8.7 where the indexes written
to the I/O log timing file are two greater than they should be.
Sudoreplay now contains a work-around to parse those files.
- In sudoreplay's list mode, the this qualifier in
fromdate or todate expressions now behaves
more sensibly. Previously, it would often match a date
that was "one more" than expected. For example, "this week"
now matches the current week instead of the following week.
Major changes between version 1.8.7 and 1.8.6p8:
- The non-Unix group plugin is now supported when sudoers data
is stored in LDAP.
- Sudo now uses a workaround for a locale bug on Solaris 11.0
that prevents setuid programs like sudo from fully using locales.
- User messages are now always displayed in the user's locale,
even when the same message is being logged or mailed in a
different locale.
- Log files created by sudo now explicitly have the group set
to group ID 0 rather than relying on BSD group semantics (which
may not be the default).
- A new exec_background sudoers option can be used to initially
run the command without read access to the terminal when running
a command in a pseudo-tty. If the command tries to read from
the terminal it will be stopped by the kernel (via SIGTTIN or
SIGTTOU) and sudo will immediately restart it as the forground
process (if possible). This allows sudo to only pass terminal
input to the program if the program actually is expecting it.
Unfortunately, a few poorly-behaved programs (like "su" on most
Linux systems) do not handle SIGTTIN and SIGTTOU properly.
- Sudo now uses an efficient group query to get all the groups
for a user instead of iterating over every record in the group
database on HP-UX and Solaris.
- Sudo now produces better error messages when there is an error
in the sudo.conf file.
- Two new settings have been added to sudo.conf to give the admin
better control of how group database queries are performed.
The group_source specifies how the group list for
a user will be determined. Legal values are
static (use the kernel groups list),
dynamic (perform a group database query)
and adaptive (only perform a group database
query if the kernel list is full). The max_groups
setting specifies the maximum number of groups a user may belong
to when performing a group database query.
- The sudo.conf file now supports line continuation by using a
backslash as the last character on the line.
- There is now a standalone sudo.conf manual page.
- Sudo now stores its libexec files in a sudo
subdirectory instead of in libexec itself. For backwards
compatibility, if the plugin is not found in the default
plugin directory, sudo will check the parent directory if
the default directory ends in /sudo.
- The sudoers I/O logging plugin now logs the terminal size.
- A new sudoers option maxseq can be used to limit the
number of I/O log entries that are stored.
- The system_group and group_file sudoers group
provider plugins are now installed by default.
- The list output (sudo -l) output from the sudoers
plugin is now less ambiguous when an entry includes different
runas users. The long list output (sudo -ll) for
file-based sudoers is now more consistent with the format
of LDAP-based sudoers.
- A uid may now be used in the sudoRunAsUser attributes for LDAP
sudoers.
- Minor plugin API change: the close and version functions are now
optional. If the policy plugin does not provide a close function
and the command is not being run in a new pseudo-tty, sudo may
now execute the command directly instead of in a child process.
- A new sudoers option pam_session can be used to disable
sudo's PAM session support.
- On HP-UX systems, sudo will now use the pstat() function
to determine the tty instead of ttyname().
- Turkish translation for sudo and sudoers from
translationproject.org.
- Dutch translation for sudo and sudoers from
translationproject.org.
- Tivoli Directory Server client libraries may now be used with
HP-UX where libibmldap has a hidden dependency on libCsup.
- The sudoers plugin will now ignore invalid domain names when
checking netgroup membership. Most Linux systems use the string
"(none)" for the NIS-style domain name instead of an empty string.
- New support for specifying a SHA-2 digest along with the command
in sudoers. Supported hash types are sha224, sha256, sha384 and
sha512. See the description of Digest_Spec in the sudoers manual
or the description of sudoCommand in the sudoers.ldap manual for
details.
- The paths to ldap.conf and ldap.secret may now be specified as
arguments to the sudoers plugin in the sudo.conf file.
- Fixed potential false positives in visudo's alias cycle detection.
- Fixed a problem where the time stamp file was being treated
as out of date on Linux systems where the change time on the
pseudo-tty device node can change after it is allocated.
- Sudo now only builds Position Independent Executables (PIE)
by default on Linux systems and verifies that a trivial test
program builds and runs.
- On Solaris 11.1 and higher, sudo binaries will now have the
ASLR tag enabled if supported by the linker.
Major changes between version 1.8.6p8 and 1.8.6p7:
- Terminal detection now works properly on 64-bit AIX kernels.
This was broken by the removal of the ttyname() fallback in Sudo
1.8.6p6. Sudo is now able to map an AIX 64-bit device number
to the corresponding device file in /dev.
- Sudo now checks for crypt() returning NULL when performing
passwd-based authentication.
Major changes between version 1.8.6p7 and 1.8.6p6:
- A time stamp file with the date set to the epoch by sudo -k
is now completely ignored regardless of what the local clock is
set to. Previously, if the local clock was set to a value between
the epoch and the time stamp timeout value, a time stamp reset
by sudo -k would be considered current.
This is a potential
security issue.
- The tty-specific time stamp file now includes the session ID
of the sudo process that created it. If a process with the same
tty but a different session ID runs sudo, the user will now be
prompted for a password (assuming authentication is required for
the command).
This is a potential
security issue.
Major changes between version 1.8.6p6 and 1.8.6p5:
- On systems where the controlling tty can be determined via
/proc or sysctl(), sudo will no longer
fall back to using ttyname() if the process has
no controlling tty. This prevents sudo from using a
non-controlling tty for logging and time stamp purposes.
This is a potential
security issue.
Major changes between version 1.8.6p5 and 1.8.6p4:
- Fixed a potential crash in visudo's alias cycle detection.
- Improved performance on Solaris when retrieving the group list
for the target user. On systems with a large number of groups
where the group database is not local (NIS, LDAP, AD), fetching
the group list could take a minute or more.
Major changes between version 1.8.6p4 and 1.8.6p3:
- The -fstack-protector is now used when linking visudo,
sudoreplay and testsudoers.
- Avoid building PIE binaries on FreeBSD/ia64 as they don't run
properly.
- Fixed a crash in visudo strict mode when an unknown Defaults
setting is encountered.
- Do not inform the user that the command was not permitted by the
policy if they do not successfully authenticate. This is a
regression introduced in sudo 1.8.6.
- Allow sudo to be build with sss support without also including
ldap support.
- Fix running commands that need the terminal in the background
when I/O logging is enabled. E.g. sudo vi &.
When the command is foregrounded, it will now resume properly.
Major changes between version 1.8.6p3 and 1.8.6p2:
- Fixed post-processing of the man pages on systems with legacy
versions of sed.
- Fixed sudoreplay -l on Linux systems with file systems
that set DT_UNKNOWN in the d_type field of struct dirent.
Major changes between version 1.8.6p2 and 1.8.6p1:
- Fixed suspending a command after it has already been resumed
once when I/O logging (or use_pty) is not enabled.
This was a regression introduced in version 1.8.6.
Major changes between version 1.8.6p1 and 1.8.6:
- Fixed the setting of LOGNAME, USER and USERNAME variables in the
command's environment when env_reset is enabled (the default).
This was a regression introduced in version 1.8.6.
- Sudo now honors SUCCESS=return in /etc/nsswitch.conf.
Major changes between version 1.8.6 and 1.8.5p3:
- Sudo is now built with the -fstack-protector flag
if the the compiler supports it. Also, the -zrelro
linker flag is used if supported. The --disable-hardening
configure option can be used to build sudo without stack
smashing protection.
- Sudo is now built as a Position Independent Executable (PIE)
if supported by the compiler and linker.
- If the user is a member of the exempt group in
sudoers, they will no longer be prompted for a password
even if the -k flag is specified with the command.
This makes sudo -k command consistent with the
behavior one would get if the user ran sudo -k
immediately before running the command.
- The sudoers file may now be a symbolic link. Previously, sudo
would refuse to read sudoers unless it was a regular file.
- The sudoreplay command can now properly replay sessions where
no tty was present.
- The sudoers plugin now takes advantage of symbol visibility
controls when supported by the compiler or linker. As a result,
only a small number of symbols are exported which significantly
reduces the chances of a conflict with other shared objects.
- Improved support for the Tivoli Directory Server LDAP client
libraries. This includes support for using LDAP over SSL
(ldaps) as well as support for the BIND_TIMELIMIT,
TLS_KEY and TLS_CIPHERS ldap.conf options.
A new ldap.conf option, TLS_KEYPW can be used to
specify a password to decrypt the key database.
- When constructing a time filter for use with LDAP sudoNotBefore
and sudoNotAfter attributes, the current time now includes tenths
of a second. This fixes a problem with timed entries on Active
Directory.
- If a user fails to authenticate and the command would be rejected
by sudoers, it is now logged with command not allowed
instead of N incorrect password attempts. Likewise,
the mail_no_perms sudoers option now takes precedence
over mail_badpass
- The sudo manuals are now formatted using the mdoc macros. Versions
using the legacy man macros are provided for systems that lack mdoc.
- New support for Solaris privilege sets. This makes it possible
to specify fine-grained privileges in the sudoers file on
Solaris 10 and above. A Runas_Spec that contains
no Runas_Lists can be used to give a user the
ability to run a command as themselves but with an expanded
privilege set.
- Fixed a problem with the reboot and shutdown commands on some
systems (such as HP-UX and BSD). On these systems, reboot
sends all processes (except itself) SIGTERM. When
sudo received SIGTERM, it would relay it to the
reboot process, thus killing reboot before it had a chance
to actually reboot the system.
- Support for using the System Security Services Daemon (SSSD) as
a source of sudoers data.
- Slovenian translation for sudo and sudoers from
translationproject.org.
- Visudo will now warn about unknown Defaults entries that are
per-host, per-user, per-runas or per-command.
- Fixed a race condition that could cause sudo to receive
SIGTTOU (and stop) when resuming a shell that was
run via sudo when I/O logging (and use_pty) is not
enabled.
- Sending SIGTSTP directly to the sudo process will
now suspend the running command when I/O logging (and
use_pty) is not enabled.
Major changes between version 1.8.5p3 and 1.8.5p2:
- Fixed the loading of I/O plugins that conform to a plugin API
version older than 1.2.
Major changes between version 1.8.5p2 and 1.8.5p1:
- Fixed use of the SUDO_ASKPASS environment variable which was
broken in Sudo 1.8.5.
- Fixed a problem reading the sudoers file when the file mode is
more restrictive than the expected mode. For example, when the
expected sudoers file mode is 0440 but the actual mode is 0400.
Major changes between version 1.8.5p1 and 1.8.5:
- Fixed a bug that prevented files in an include directory
from being evaluated.
Major changes between version 1.8.5 and 1.8.4p5:
- When "noexec" is enabled, sudo_noexec.so will now be prepended
to any existing LD_PRELOAD variable instead of replacing it.
- The sudo_noexec.so shared library now wraps the execvpe(),
exect(), posix_spawn() and posix_spawnp() functions.
- The user/group/mode checks on sudoers files have been relaxed.
As long as the file is owned by the sudoers uid, not world-writable
and not writable by a group other than the sudoers gid, the file
is considered OK. Note that visudo will still set the mode to
the value specified at configure time.
- It is now possible to specify the sudoers path, uid, gid and
file mode as options to the plugin in the sudo.conf file.
- Croatian, Galician, German, Lithuanian, Swedish and Vietnamese
translations from
translationproject.org.
- /etc/environment is no longer read directly on Linux systems
when PAM is used. Sudo now merges the PAM environment into the
user's environment which is typically set by the pam_env module.
- The initial evironment created when env_reset is in effect
now includes the contents of /etc/environment on
AIX systems and the "setenv" and "path" entries from
/etc/login.conf on BSD systems.
- The plugin API has been extended in three ways. First, options
specified in sudo.conf after the plugin pathname are passed to
the plugin's open function. Second, sudo has limited support
for hooks that can be used by plugins. Currently, the hooks are
limited to environment handling functions. Third, the init_session
policy plugin function is passed a pointer to the user environment
which can be updated during session setup. The plugin API version
has been incremented to version 1.2. See the sudo_plugin manual
for more information.
- The policy plugin's init_session function is now called by the
parent sudo process, not the child process that executes the
command. This allows the PAM session to be open and closed in
the same process, which some PAM modules require.
- Fixed parsing of "Path askpass" and "Path noexec" in sudo.conf,
which was broken in version 1.8.4.
- On systems with an SVR4-style /proc file system, the
/proc/pid/psinfo file is now uses to determine the
controlling terminal, if possible. This allows tty-based
tickets to work properly even when, e.g. standard input,
output and error are redirected to /dev/null.
- The output of "sudoreplay -l" is now sorted by file name (or
sequence number). Previously, entries were displayed in the
order in which they were found on the file system.
- Sudo now behaves properly when I/O logging is enabled and the
controlling terminal is revoked (e.g. the running sshd is killed).
Previously, sudo may have exited without calling the I/O plugin's
close function which can lead to an incomplete I/O log.
- Sudo can now detect when a user has logged out and back in again
on Solaris 11, just like it can on Solaris 10.
- The built-in zlib included with Sudo has been upgraded to version
1.2.6.
- Setting the SSL parameter to start_tls in ldap.conf now works
properly when using Mozilla-based SDKs that support the
ldap_start_tls_s() function.
- The TLS_CHECKPEER parameter in ldap.conf now works when the
Mozilla NSS crypto backend is used with OpenLDAP.
- A new group provider plugin, system_group, is included which
performs group look ups by name using the system groups database.
This can be used to restore the pre-1.7.3 sudo group lookup
behavior.
Major changes between version 1.8.4p5 and 1.8.4p4:
- Fixed a potential security issue
in the matching of hosts against an IPv4 network specified
in sudoers. The flaw may allow a user who is authorized
to run commands on hosts belonging to one IPv4 network to
run commands on a different host.
Major changes between version 1.8.4p4 and 1.8.4p3:
- Fixed a bug introduced in Sudo 1.8.4 which prevented
sudo -v from working.
Major changes between version 1.8.4p3 and 1.8.4p2:
- Fixed a crash on FreeBSD when there is no tty present.
- When visudo is run with the -c (check) option, the sudoers
file(s) owner and mode are now also checked unless the -f option
was specified.
Major changes between version 1.8.4p2 and 1.8.4p1:
- Fixed a bug introduced in Sudo 1.8.4 where insufficient space
was allocated for group IDs in the LDAP filter.
- Fixed a bug introduced in Sudo 1.8.4 where the path to sudo.conf
was /sudo.conf instead of etc/sudo.conf.
- Fixed a bug introduced in Sudo 1.8.4 which could cause a hang
when I/O logging is enabled and input is from a pipe or file.
Major changes between version 1.8.4p1 and 1.8.4:
- Fixed a bug introduced in sudo 1.8.4 that broke adding to or
deleting from the env_keep, env_check and
env_delete lists in sudoers on some platforms.
Major changes between version 1.8.4 and 1.8.3p2:
- The -D flag in sudo has been replaced with a more
general debugging framework that is configured in sudo.conf.
- Fixed a false positive in visudo strict mode when aliases are
in use.
- Fixed a crash with sudo -i when a runas group was
specified without a runas user.
- The line on which a syntax error is reported in the sudoers file
is now more accurate. Previously it was often off by a line.
- Fixed a bug where stack garbage could be printed at the end of
the lecture when the lecture_file option was enabled.
- make install now honors the LINGUAS environment
variable.
- The #include and #includedir directives
in sudoers now support relative paths. If the path is not
fully qualified it is expected to be located in the same
directory of the sudoers file that is including it.
- New Serbian and Spanish translations for sudo from
translationproject.org.
- LDAP-based sudoers may now access by group ID in addition to
group name.
- visudo will now fix the mode on the sudoers file even if no changes
are made unless the -f option is specified.
- The use_loginclass sudoers option works properly again.
- On systems that use login.conf, sudo -i now sets
environment variables based on login.conf.
- For LDAP-based sudoers, values in the search expression are now
escaped as per RFC 4515.
- The plugin close function is now properly called when a login
session is killed (as opposed to the actual command being killed).
This can happen when an ssh session is disconnected or the
terminal window is closed.
- The deprecated "noexec_file" sudoers option is no longer supported.
- Fixed a race condition when I/O logging is not enabled that could
result in tty-generated signals (e.g. control-C) being received
by the command twice.
- If none of the standard input, output or error are connected
to a tty device, sudo will now check its parent's standard
input, output or error for the tty name on systems with
/proc and BSD systems that support the
KERN_PROC_PID sysctl. This allows tty-based tickets
to work properly even when, e.g. standard input, output and
error are redirected to /dev/null.
- Added the --enable-kerb5-instance configure option
to allow people using Kerberos V authentication to specify
a custom instance so the principal name can be, e.g.
"username/sudo" similar to how ksu uses "username/root".
- Fixed a bug where a pattern like /usr/* included
/usr/bin/ in the results, which would be incorrectly
be interpreted as if the sudoers file had specified a
directory.
- visudo -c will now list any include files that were checked
in addition to the main sudoers file when everything parses OK.
- Users that only have read-only access to the sudoers file may
now run visudo -c. Previously, write permissions were
required even though no writing is down in check-only mode.
- It is now possible to prevent the disabling of core dumps
from within sudo itself by adding a line to the sudo.conf
file like Set disable_coredump false.
Major changes between version 1.8.3p2 and 1.8.3p1:
- Fixed a format string
vulnerability when the sudo binary (or a symbolic link to
the sudo binary) contains printf format escapes and the -D
(debugging) flag is used.
Major changes between version 1.8.3p1 and 1.8.3:
- Fixed a crash in the monitor process on Solaris when NOPASSWD
was specified or when authentication was disabled.
- Fixed matching of a Runas_Alias in the group section of a Runas_Spec.
Major changes between version 1.8.3 and 1.8.2:
- Fixed expansion of strftime() escape sequences in the
log_dir sudoers setting.
- Esperanto, Italian and Japanese translations from
translationproject.org.
- Sudo will now use PAM by default on AIX 6 and higher.
- Added --enable-werror configure option for gcc's -Werror flag.
- Visudo no longer assumes all editors support the +linenumber
command line argument. It now uses a whitelist of editors known
to support the option.
- Fixed matching of network addresses when a netmask is specified
but the address is not the first one in the CIDR block.
- The configure script now check whether or not errno.h declares
the errno variable. Previously, sudo would always declare errno
itself for older systems that don't declare it in errno.h.
- The NOPASSWD tag is now honored for denied commands too, which
matches historic sudo behavior (prior to sudo 1.7.0).
- Sudo now honors the DEREF setting in ldap.conf which controls
how alias dereferencing is done during an LDAP search.
- A symbol conflict with the pam_ssh_agent_auth PAM module that
would cause a crash been resolved.
- The inability to load a group provider plugin is no longer
a fatal error.
- A potential crash in the utmp handling code has been fixed.
- Two PAM session issues have been resolved. In previous versions
of sudo, the PAM session was opened as one user and closed as
another. Additionally, if no authentication was performed, the
PAM session would never be closed.
- Sudo will now work correctly with LDAP-based sudoers using TLS
or SSL on Debian systems.
- The LOGNAME, USER and USERNAME environment
variables are preserved correctly again in sudoedit mode.
Major changes between version 1.8.2 and 1.8.1p2:
- Sudo, visudo, sudoreplay and the sudoers plug-in now have
natural language support (NLS).
Sudo will use gettext(), if available, to display translated
messages. This can be disabled by passing configure the
--disable-nls option. All translations are coordinated via
The Translation Project,
translationproject.org.
Sudo 1.8.2 includes translations for Basque, Chinese
(simplified), Danish, Finish, Polish, Russian and Ukranian.
- Plug-ins are now loaded with the RTLD_GLOBAL flag
instead of RTLD_LOCAL. This fixes missing symbol
problems in PAM modules on certain platforms, such as FreeBSD
and SuSE Linux Enterprise.
- I/O logging is now supported for commands run in background mode
(using sudo's -b flag).
- Group ownership of the sudoers file is now only enforced when
the file mode on sudoers allows group readability or writability.
- Visudo now checks the contents of an alias and warns about cycles
when the alias is expanded.
- If the user specifes a group via sudo's -g option that matches
the target user's group in the password database, it is now
allowed even if no groups are present in the Runas_Spec.
- The sudo Makefiles now have more complete dependencies which are
automatically generated instead of being maintained manually.
- The use_pty sudoers option is now correctly passed
back to the sudo front end. This was missing in previous
versions of sudo 1.8 which prevented use_pty from
being honored.
- sudo -i command now works correctly with the bash
version 2.0 and higher. Previously, the .bash_profile would
not be sourced prior to running the command unless bash was
built with NON_INTERACTIVE_LOGIN_SHELLS defined.
- When matching groups in the sudoers file, sudo will now match
based on the name of the group instead of the group ID. This can
substantially reduce the number of group lookups for sudoers
files that contain a large number of groups.
- Multi-factor authentication is now supported on AIX.
- Added support for non-RFC 4517 compliant LDAP servers that
require that seconds be present in a timestamp, such as
Tivoli Directory Server.
- If the group vector is to be preserved, the PATH search for the
command is now done with the user's original group vector.
- For LDAP-based sudoers, the runas_default sudoOption
now works properly in a sudoRole that contains a sudoCommand.
- Spaces in command line arguments for sudo -s and
sudo -i are now escaped with a backslash when
checking the security policy.
Major changes between version 1.8.1p2 and 1.8.1p1:
- Two-character CIDR-style IPv4 netmasks are now matched correctly
in the sudoers file.
- A build error with MIT Kerberos V has been resolved.
- A crash on HP-UX in the sudoers plugin when wildcards are
present in the sudoers file has been resolved.
- Sudo now works correctly on Tru64 Unix again.
Major changes between version 1.8.1p1 and 1.8.1:
- Fixed a problem on AIX where sudo was unable to set the final
uid if the PAM module modified the effective uid.
- A non-existent includedir is now treated the same as an empty
directory and not reported as an error.
- Removed extraneous parens in LDAP filter when sudoers_search_filter
is enabled that can cause an LDAP search error.
- Fixed a make -j problem for make install
Major changes between version 1.8.1 and 1.8.0:
- A new LDAP setting, sudoers_search_filter, has been added to
ldap.conf. This setting can be used to restrict the set of
records returned by the LDAP query. Based on changes from Matthew
Thomas.
- White space is now permitted within a User_List when used in
conjunction with a per-user Defaults definition.
- A group ID (%#gid) may now be specified in a User_List or Runas_List.
Likewise, for non-Unix groups the syntax is %:#gid.
- Support for double-quoted words in the sudoers file has been fixed.
The change in 1.7.5 for escaping the double quote character
caused the double quoting to only be available at the beginning
of an entry.
- The fix for resuming a suspended shell in 1.7.5 caused problems
with resuming non-shells on Linux. Sudo will now save the process
group ID of the program it is running on suspend and restore it
when resuming, which fixes both problems.
- A bug that could result in corrupted output in "sudo -l" has been
fixed.
- Sudo will now create an entry in the utmp (or utmpx) file when
allocating a pseudo-tty (e.g. when logging I/O). The "set_utmp"
and "utmp_runas" sudoers file options can be used to control this.
Other policy plugins may use the "set_utmp" and "utmp_user"
entries in the command_info list.
- The sudoers policy now stores the TSID field in the logs
even when the "iolog_file" sudoers option is defined to a value
other than %{sessid}. Previously, the TSID field was only
included in the log file when the "iolog_file" option was set
to its default value.
- The sudoreplay utility now supports arbitrary session IDs.
Previously, it would only work with the base-36 session IDs
that the sudoers plugin uses by default.
- Sudo now passes "run_shell=true" to the policy plugin in the
settings list when sudo's -s command line option is specified.
The sudoers policy plugin uses this to implement the "set_home"
sudoers option which was missing from sudo 1.8.0.
- The "noexec" functionality has been moved out of the sudoers
policy plugin and into the sudo front-end, which matches the
behavior documented in the plugin writer's guide. As a result,
the path to the noexec file is now specified in the sudo.conf
file instead of the sudoers file.
- On Solaris 10, the PRIV_PROC_EXEC privilege is now used to
implement the "noexec" feature. Previously, this was implemented
via the LD_PRELOAD environment variable.
- The exit values for "sudo -l", "sudo -v" and "sudo -l command"
have been fixed in the sudoers policy plugin.
- The sudoers policy plugin now passes the login class, if any,
back to the sudo front-end.
- The sudoers policy plugin was not being linked with requisite
libraries in certain configurations.
- Sudo now parses command line arguments before loading any plugins.
This allows "sudo -V" or "sudo -h" to work even if there is a problem
with sudo.conf
- Plugins are now linked with the static version of libgcc to allow
the plugin to run on a system where no shared libgcc is installed,
or where it is installed in a different location.
Major changes between version 1.8.0 and 1.7.5:
- Sudo has been refactored to use a modular framework that can
support third-party policy and I/O logging plugins. The default
plugin is "sudoers" which provides the traditional sudo functionality.
See the sudo_plugin manual for details on the plugin API and the
sample in the plugins directory for a simple example.
Major changes between version 1.7.10p9 and 1.7.10p8:
- The TZ environment variable is now checked for safety instead
of simply being copied to the environment of the command.
This fixes a potential security issue.
- Sudo now only builds Position Independent Executables (PIE)
by default on Linux systems and verifies that a trivial test
program builds and runs.
- On Solaris 11.1 and higher, sudo binaries will now have the
ASLR tag enabled if supported by the linker.
Major changes between version 1.7.10p8 and 1.7.10p7:
- Sudo's exit code now indicates a failure if the user does not
successfully authenticate.
- On HP-UX systems, sudo will now use the pstat() function to
determine the tty instead of ttyname().
- Fixed compilation when --without-iologdir configure option is
specified.
- On systems with BSD login classes, if the user specified a group
(not a user) to run the command as, it was possible to specify
a different login class even when the command was not run as the
super user.
- The closefrom() emulation on Mac OS X now uses /dev/fd if possible.
It also now sets the close on exec flag instead of actually
closing the descriptors to avoid a crash in libdispatch.
- The sudoers plugin will now ignore invalid domain names when
checking netgroup membership. Most Linux systems use the string
"(none)" for the NIS-style domain name instead of an empty string.
- Fixed the logic when checking environment variables on the
command line against the env_check and env_delete blacklists.
This is only a problem when env_reset is disabled in sudoers.
This fixes a potential security issue
that may allow a user to run unauthorized commands when the env_reset option is disabled in sudoers.
Major changes between version 1.7.10p7 and 1.7.10p6:
- A time stamp file with the date set to the epoch by sudo -k
is now completely ignored regardless of what the local clock is
set to. Previously, if the local clock was set to a value between
the epoch and the time stamp timeout value, a time stamp reset
by sudo -k would be considered current.
This is a potential
security issue.
- Fixed the sudo exit status when sudo -l command is run.
This is a regression introduced in version 1.7.10.
Major changes between version 1.7.10p6 and 1.7.10p5:
- Fixed the restoration of SIGINT, SIGQUIT and SIGTSTP. This
is a regression introduced in version 1.7.10p4.
- The tty-specific time stamp file now includes the session ID
of the sudo process that created it. If a process with the same
tty but a different session ID runs sudo, the user will now be
prompted for a password (assuming authentication is required for
the command).
This is a potential
security issue.
Major changes between version 1.7.10p5 and 1.7.10p4:
- On systems where the controlling tty can be determined via
/proc or sysctl(), sudo will no longer
fall back to using ttyname() if the process has
no controlling tty. This prevents sudo from using a
non-controlling tty for logging and time stamp purposes.
This is a potential
security issue.
Major changes between version 1.7.10p4 and 1.7.10p3:
- Avoid building PIE binaries on FreeBSD/ia64 as they don't run
properly.
- Fixed a crash in visudo strict mode when an unknown Defaults
setting is encountered.
- Do not inform the user that the command was not permitted by the
policy if they do not successfully authenticate. This is a
regression introduced in sudo 1.8.6.
- Allow sudo to be build with sss support without also including
ldap support.
- Fix running commands that need the terminal in the background
when I/O logging is enabled. E.g. sudo vi &.
When the command is foregrounded, it will now resume properly.
Major changes between version 1.7.10p3 and 1.7.10p2:
- Fixed post-processing of the man pages on systems with legacy
versions of sed.
- Fixed sudoreplay -l on Linux systems with file systems
that set DT_UNKNOWN in the d_type field of struct dirent.
Major changes between version 1.7.10p2 and 1.7.10p1:
- Fixed suspending a command after it has already been resumed
once when I/O logging (or use_pty) is not enabled.
This was a regression introduced in version 1.7.10.
Major changes between version 1.7.10p1 and 1.7.10:
- Fixed the setting of LOGNAME, USER and USERNAME variables in the
command's environment when env_reset is enabled (the default).
This was a regression introduced in version 1.7.10.
- Sudo now honors SUCCESS=return in /etc/nsswitch.conf.
Major changes between version 1.7.10 and 1.7.9p1:
- Sudo is now built with the -fstack-protector flag
if the the compiler supports it. Also, the -zrelro
linker flag is used if supported. The --disable-hardening
configure option can be used to build sudo without stack
smashing protection.
- Sudo is now built as a Position Independent Executable (PIE)
if supported by the compiler and linker.
- If the user is a member of the exempt group in
sudoers, they will no longer be prompted for a password
even if the -k flag is specified with the command.
This makes sudo -k command consistent with the
behavior one would get if the user ran sudo -k
immediately before running the command.
- The sudoers file may now be a symbolic link. Previously, sudo
would refuse to read sudoers unless it was a regular file.
- The user/group/mode checks on sudoers files have been relaxed.
As long as the file is owned by the sudoers uid, not world-writable
and not writable by a group other than the sudoers gid, the file
is considered OK. Note that visudo will still set the mode to
the value specified at configure time.
- /etc/environment is no longer read directly on Linux systems
when PAM is used. Sudo now merges the PAM environment into the
user's environment which is typically set by the pam_env module.
- The initial evironment created when env_reset is in effect
now includes the contents of /etc/environment on
AIX systems and the "setenv" and "path" entries from
/etc/login.conf on BSD systems.
- On systems with an SVR4-style /proc file system, the
/proc/pid/psinfo file is now uses to determine the
controlling terminal, if possible. This allows tty-based
tickets to work properly even when, e.g. standard input,
output and error are redirected to /dev/null.
- The output of "sudoreplay -l" is now sorted by file name (or
sequence number). Previously, entries were displayed in the
order in which they were found on the file system.
- The sudoreplay command can now properly replay sessions where
no tty was present.
- Sudo now behaves properly when I/O logging is enabled and the
controlling terminal is revoked (e.g. the running sshd is killed).
Previously, sudo may have exited without calling the I/O plugin's
close function which can lead to an incomplete I/O log.
- Sudo can now detect when a user has logged out and back in again
on Solaris 11, just like it can on Solaris 10.
- The built-in zlib included with Sudo has been upgraded to version
1.2.6.
- Setting the SSL parameter to start_tls in ldap.conf now works
properly when using Mozilla-based SDKs that support the
ldap_start_tls_s() function.
- The TLS_CHECKPEER parameter in ldap.conf now works when the
Mozilla NSS crypto backend is used with OpenLDAP.
- Improved support for the Tivoli Directory Server LDAP client
libraries. This includes support for using LDAP over SSL
(ldaps) as well as support for the BIND_TIMELIMIT,
TLS_KEY and TLS_CIPHERS ldap.conf options.
A new ldap.conf option, TLS_KEYPW can be used to
specify a password to decrypt the key database.
- Fixed a crash introduced in version 1.7.7 when "sudo -s" is
specified with a command.
- If a user fails to authenticate and the command would be rejected
by sudoers, it is now logged with command not allowed
instead of N incorrect password attempts. Likewise,
the mail_no_perms sudoers option now takes precedence
over mail_badpass
- The sudo manuals are now formatted using the mdoc macros. Versions
using the legacy man macros are provided for systems that lack mdoc.
- Fixed a problem with the reboot and shutdown commands on some
systems (such as HP-UX and BSD). On these systems, reboot
sends all processes (except itself) SIGTERM. When
sudo received SIGTERM, it would relay it to the
reboot process, thus killing reboot before it had a chance
to actually reboot the system.
- Visudo will now warn about unknown Defaults entries that are
per-host, per-user, per-runas or per-command.
- When constructing a time filter for use with LDAP sudoNotBefore
and sudoNotAfter attributes, the current time now includes tenths
of a second. This fixes a problem with timed entries on Active
Directory.
- Fixed a race condition that could cause sudo to receive
SIGTTOU (and stop) when resuming a shell that was
run via sudo when I/O logging (and use_pty) is not
enabled.
- Sending SIGTSTP directly to the sudo process will
now suspend the running command when I/O logging (and
use_pty) is not enabled.
Major changes between version 1.7.9p1 and 1.7.9:
- Fixed a potential security issue
in the matching of hosts against an IPv4 network specified
in sudoers. The flaw may allow a user who is authorized
to run commands on hosts belonging to one IPv4 network to
run commands on a different host.
Major changes between version 1.7.9 and 1.7.8p2:
- Fixed a false positive in visudo strict mode when aliases are
in use.
- The line on which a syntax error is reported in the sudoers file
is now more accurate. Previously it was often off by a line.
- The #include and #includedir directives
in sudoers now support relative paths. If the path is not
fully qualified it is expected to be located in the same
directory of the sudoers file that is including it.
- visudo will now fix the mode on the sudoers file even if no changes
are made unless the -f option is specified.
- The use_loginclass sudoers option works properly again.
- For LDAP-based sudoers, values in the search expression are now
escaped as per RFC 4515.
- Fixed a race condition when I/O logging is not enabled that could
result in tty-generated signals (e.g. control-C) being received
by the command twice.
- If none of the standard input, output or error are connected
to a tty device, sudo will now check its parent's standard
input, output or error for the tty name on systems with
/proc and BSD systems that support the
KERN_PROC_PID sysctl. This allows tty-based tickets
to work properly even when, e.g. standard input, output and
error are redirected to /dev/null.
- Fixed a bug where a pattern like /usr/* included
/usr/bin/ in the results, which would be incorrectly
be interpreted as if the sudoers file had specified a
directory.
- visudo -c will now list any include files that were checked
in addition to the main sudoers file when everything parses OK.
- Users that only have read-only access to the sudoers file may
now run visudo -c. Previously, write permissions were
required even though no writing is down in check-only mode.
Major changes between version 1.7.8p2 and 1.7.8p1:
- Fixed a crash in the monitor process on Solaris when NOPASSWD
was specified or when authentication was disabled.
Major changes between version 1.7.8p1 and 1.7.8:
- Fixed matching of a Runas_Alias in the group section of a Runas_Spec.
Major changes between version 1.7.8 and 1.7.7:
- Sudo will now use PAM by default on AIX 6 and higher.
- Added --enable-werror configure option for gcc's -Werror flag.
- Visudo no longer assumes all editors support the +linenumber
command line argument. It now uses a whitelist of editors known
to support the option.
- Fixed matching of network addresses when a netmask is specified
but the address is not the first one in the CIDR block.
- The configure script now check whether or not errno.h declares
the errno variable. Previously, sudo would always declare errno
itself for older systems that don't declare it in errno.h.
- The NOPASSWD tag is now honored for denied commands too, which
matches historic sudo behavior (prior to sudo 1.7.0).
- Sudo now honors the DEREF setting in ldap.conf which controls
how alias dereferencing is done during an LDAP search.
- Using the -n option may in conjunction with the -v or -l option
no longer results in a usage error.
- The LOGNAME, USER and USERNAME environment
variables are preserved correctly again in sudoedit mode.
Major changes between version 1.7.7 and 1.7.6p2:
- I/O logging is now supported for commands run in background mode
(using sudo's -b flag).
- Group ownership of the sudoers file is now only enforced when
the file mode on sudoers allows group readability or writability.
- Visudo now checks the contents of an alias and warns about cycles
when the alias is expanded.
- If the user specifes a group via sudo's -g option that matches
the target user's group in the password database, it is now
allowed even if no groups are present in the Runas_Spec.
- sudo -i command now works correctly with the bash version
2.0 and higher. Previously, the .bash_profile would not be
sourced prior to running the command unless bash was built with
NON_INTERACTIVE_LOGIN_SHELLS defined.
- Multi-factor authentication is now supported on AIX.
- Added support for non-RFC 4517 compliant LDAP servers that require
that seconds be present in a timestamp, such as Tivoli Directory Server.
- If the group vector is to be preserved, the PATH search for the
command is now done with the user's original group vector.
- For LDAP-based sudoers, the runas_default sudoOption now works
properly in a sudoRole that contains a sudoCommand.
- Spaces in command line arguments for sudo -s and
sudo -i are now escaped with a backslash when checking
the sudoers file.
Major changes between version 1.7.6p2 and 1.7.6p1:
- Two-character CIDR-style IPv4 netmasks are now matched correctly
in the sudoers file.
- A build error with MIT Kerberos V has been resolved.
Major changes between version 1.7.6p1 and 1.7.6:
- A non-existent includedir is now treated the same as an empty
directory and not reported as an error.
- Removed extraneous parens in LDAP filter when sudoers_search_filter
is enabled that can cause an LDAP search error.
Major changes between version 1.7.6 and 1.7.5:
- A new LDAP setting, sudoers_search_filter, has been added to
ldap.conf. This setting can be used to restrict the set of
records returned by the LDAP query. Based on changes from Matthew
Thomas.
- White space is now permitted within a User_List when used in
conjunction with a per-user Defaults definition.
- A group ID (%#gid) may now be specified in a User_List or Runas_List.
Likewise, for non-Unix groups the syntax is %:#gid.
- Support for double-quoted words in the sudoers file has been fixed.
The change in 1.7.5 for escaping the double quote character
caused the double quoting to only be available at the beginning
of an entry.
- The fix for resuming a suspended shell in 1.7.5 caused problems
with resuming non-shells on Linux. Sudo will now save the process
group ID of the program it is running on suspend and restore it
when resuming, which fixes both problems.
- A bug that could result in corrupted output in "sudo -l" has been
fixed.
Major changes between version 1.7.5 and 1.7.4p6:
- When using visudo in check mode, a file named "-" may be used to
check sudoers data on the standard input.
- Sudo now only fetches shadow password entries when using the
password database directly for authentication.
- Password and group entries are now cached using the same key
that was used to look them up. This fixes a problem when looking
up entries by name if the name in the retrieved entry does not
match the name used to look it up. This may happen on some systems
that do case insensitive lookups or that truncate long names.
- GCC will no longer display warnings on glibc systems that use
the warn_unused_result attribute for write(2) and other system calls.
- If a PAM account management module denies access, sudo now prints
a more useful error message and stops trying to validate the user.
- Fixed a potential hang on idle systems when the sudo-run process
exits immediately.
- Sudo now includes a copy of zlib that will be used on systems
that do not have zlib installed.
- The --with-umask-override configure flag has been added to enable
the "umask_override" sudoers Defaults option at build time.
- Sudo now unblocks all signals on startup to avoid problems caused
by the parent process changing the default signal mask.
- LDAP Sudoers entries may now specify a time period for which
the entry is valid. This requires an updated sudoers schema
that includes the sudoNotBefore and sudoNotAfter attributes.
Support for timed entries must be explicitly enabled in the
ldap.conf file. Based on changes from Andreas Mueller.
- LDAP Sudoers entries may now specify a sudoOrder attribute that
determines the order in which matching entries are applied. The
last matching entry is used, just like file-based sudoers. This
requires an updated sudoers schema that includes the sudoOrder
attribute. Based on changes from Andreas Mueller.
- When run as sudoedit, or when given the -e flag, sudo now treats
command line arguments as pathnames. This means that slashes
in the sudoers file entry must explicitly match slashes in
the command line arguments. As a result, and entry such as:
user ALL = sudoedit /etc/*
will allow editing of /etc/motd but not /etc/security/default.
- NETWORK_TIMEOUT is now an alias for BIND_TIMELIMIT in ldap.conf for
compatibility with OpenLDAP configuration files.
- The LDAP API TIMEOUT parameter is now honored in ldap.conf.
- The I/O log directory may now be specified in the sudoers file.
- Sudo will no longer refuse to run if the sudoers file is writable
by root.
- Sudo now performs command line escaping for "sudo -s" and "sudo -i"
after validating the command so the sudoers entries do not need
to include the backslashes.
- Logging and email sending are now done in the locale specified
by the "sudoers_locale" setting ("C" by default). Email send by
sudo now includes MIME headers when "sudoers_locale" is not "C".
- The configure script has a new option, --disable-env-reset, to
allow one to change the default for the sudoers Default setting
"env_reset" at compile time.
- When logging "sudo -l command", sudo will now prepend "list "
to the command in the log line to distinguish between an
actual command invocation in the logs.
- Double-quoted group and user names may now include escaped double
quotes as part of the name. Previously this was a parse error.
- Sudo once again restores the state of the signal handlers it
modifies before executing the command. This allows sudo to be
used with the nohup command.
- Resuming a suspended shell now works properly when I/O logging
is not enabled (the I/O logging case was already correct).
Major changes between version 1.7.4p5 and 1.7.4p6:
- A bug has been fixed in the I/O logging support that could cause
visual artifacts in full-screen programs such as text editors,.
Major changes between version 1.7.4p4 and 1.7.4p5:
- A bug has been fixed that would allow a command to be run without the
user entering a password when sudo's -g flag is used without the -u flag.
- If user has no supplementary groups, sudo will now fall back on checking
the group file explicitly, which restores historic sudo behavior.
- A crash has been fixed when sudo's -g flag is used without the -u flag
and the sudoers file contains an entry with no runas user or group listed.
- A crash has been fixed when the Solaris project support is enabled
and sudo's -g flag is used without the -u flag.
- Sudo no longer exits with an error when support for auditing is
compiled in but auditing is not enabled.
- Fixed a bug introduced in sudo 1.7.3 where the ticket file was not
being honored when the "targetpw" sudoers Defaults option was enabled.
- The LOG_INPUT and LOG_OUTPUT tags in sudoers are now parsed correctly.
- A crash has been fixed in "sudo -l" when sudo is built with auditing
support and the user is not allowed to run any commands on the host.
Major changes between version 1.7.4p3 and 1.7.4p4:
- A potential security
issue has been fixed with respect to the handling of sudo's
-g command line option when -u is also specified.
The flaw may allow an attacker to run commands as a user that is
not authorized by the sudoers file.
- A bug has been fixed where "sudo -l" output was incomplete
if multiple sudoers sources were defined in nsswitch.conf
and there was an error querying one of the sources.
- The log_input, log_output, and use_pty sudoers options now
work correctly on AIX. Previously, sudo would hang if
they were enabled.
- Fixed "make install" when sudo is built in a directory
other than the directory that holds the sources.
- The runas_default sudoers setting now works properly
in a per-command Defaults line.
- Suspending and resuming the bash shell when PAM is in use now
works properly. The SIGCONT signal was not being propagated
to the child process.
Major changes between version 1.7.4p2 and 1.7.4p3:
- A bug has been fixed where duplicate HOME environment
variables could be set when the env_reset setting
was disabled and the always_set_home setting was
enabled in sudoers.
- The value of sysconfdir is now substituted into the path
to the sudoers.d directory in the installed
sudoers file.
- Fixed compilation problems on Irix and other platforms.
- If multiple PAM "auth" actions are specified and the user
enters ^C at the password prompt, sudo will now abort any
subsequent "auth" actions. Previously it was necessary to
enter ^C once for each "auth" action.
Major changes between version 1.7.4p1 and 1.7.4p2:
- Fixed a bug where sudo could spin in a cpu loop waiting
for the child process.
- Packaging fixes for sudo.pp to better handle patchlevels.
Major changes between version 1.7.4 and 1.7.4p1:
- Fix a bug introduced in sudo 1.7.3 that prevented the
-k and -K options from functioning when
the tty_tickets sudoers option was enabled.
- Sudo no longer prints a warning when the -k or -K
options are specified and the ticket file does not exist.
- Changes to the configure script to enable cross-compilation of Sudo.
Major changes between version 1.7.3 and 1.7.4:
- Sudoedit will now preserve the file extension in the name of the
temporary file being edited. The extension is used by some
editors (such as emacs) to choose the editing mode.
- Time stamp files have moved from /var/run/sudo to either /var/db/sudo,
/var/lib/sudo or /var/adm/sudo. The directories are checked for
existence in that order. This prevents users from receiving the
sudo lecture every time the system reboots. Time stamp files older
than the boot time are ignored on systems where it is possible to
determine this.
- Ancillary documentation (README files, LICENSE, etc) is now installed
in a sudo documentation directory.
- Sudo now recognizes "tls_cacert" as an alias for "tls_cacertfile"
in ldap.conf.
- Defaults settings that are tied to a user, host or command may
now include the negation operator. For example:
Defaults:!millert lecture
will match any user but millert.
- The default PATH environment variable, used when no PATH variable
exists, now includes /usr/sbin and /sbin.
- Sudo now uses polypkg
for cross-platform packing.
- On Linux, sudo will now restore the nproc resource limit before
executing a command, unless the limit appears to have been modified
by pam_limits. This avoids a problem with bash scripts that open
more than 32 descriptors on SuSE Linux, where sysconf(_SC_CHILD_MAX)
will return -1 when RLIMIT_NPROC is set to RLIMIT_UNLIMITED (-1).
- Visudo will now treat an unrecognized Defaults entry as a
parse error (sudo will warn but still run).
- The HOME and MAIL environment variables are now reset based on the
target user's password database entry when the env_reset sudoers option
is enabled (which is the case in the default configuration). Users
wishing to preserve the original values should use a sudoers entry like:
Defaults env_keep += HOME
to preserve the old value of HOME and
Defaults env_keep += MAIL
to preserve the old value of MAIL.
- The tty_tickets option is now on by default.
- Fixed a problem in the restoration of the AIX authdb registry setting.
- If PAM is in use, wait until the process has finished before closing
the PAM session.
- Fixed "sudo -i -u user" where user has no shell listed in the
password database.
- When logging I/O, sudo now handles pty read/write returning ENXIO,
as seen on FreeBSD when the login session has been killed.
- Sudo now performs I/O logging in the C locale. This avoids
locale-related issues when parsing floating point
numbers in the timing file.
- Added support for Ubuntu-style admin flag dot files.
Major changes between version 1.7.2p8 and 1.7.3:
- Support for logging a command's input and output as well as
the ability to replay sessions. For more information, see
the documentation for the log_input and
log_output Defaults options in the sudoers manual.
Also see the sudoreplay manual
for information on replaying I/O log sessions.
- The use_pty sudoers option can be used to force a command
to be run in a pseudo-pty, even when I/O logging is not enabled.
- On some systems, sudo can now detect when a
user has logged out and back in again when tty-based time
stamps are in use. Supported systems include Solaris systems
with the devices file system, Mac OS X, and Linux systems
with the devpts filesystem (pseudo-ttys only).
- On AIX systems, the registry setting in /etc/security/user
is now taken into account when looking up users and groups. Sudo
now applies the correct the user and group ids when running a
command as a user whose account details come from a different
source (e.g. LDAP or DCE vs. local files).
- Support for multiple sudoers_base and uri entries in
ldap.conf. When multiple entries are listed, sudo will try
each one in the order in which they are specified.
- Sudo's SELinux support should now function correctly when running
commands as a non-root user and when one of stdin, stdout or stderr
is not a terminal.
- Sudo will now use the Linux audit system with configure with
the --with-linux-audit flag.
- Sudo now uses mbr_check_membership() on systems that support
it to determine group membership. Currently, only Darwin (Mac OS X)
supports this.
- When the tty_tickets sudoers option is enabled but there
is no terminal device, sudo will no longer use or create a tty-based
ticket file. Previously, sudo would use a tty name of "unknown".
As a consequence, if a user has no terminal device, sudo will
now always prompt for a password.
- The passwd_timeout and timestamp_timeout options
may now be specified as floating point numbers for more granular
timeout values.
- Negating the fqdn option in sudoers now works correctly
when sudo is configured with the --with-fqdn option.
In previous versions of sudo the fqdn was set before sudoers
was parsed.
Major changes between version 1.7.2p7 and 1.7.2p8:
- Fixed a crash on AIX when LDAP support is in use.
- Fixed problems with the QAS non-Unix group support.
Major changes between version 1.7.2p6 and 1.7.2p7:
- Fix detection of newer versions of OpenPAM.
- Sync non-Unix group support with Quest sudo git repo.
- Configure fixes: HP-UX ld uses +b instead of -R or -rpath;
fix typo in --with-vasgroups check; link with -ldl for
vasgroups; add missing template for ENV_DEBUG.
- Fix typos in README.LDAP.
- Use the value of SHELL from configure in the Makefile.
- Handle duplicate variables in the environment.
For unsetenv(), keep looking even after remove the first instance.
For sudo_putenv(), check for and remove dupes after we replace an
existing value.
- Fix a crash in visudo when checking a sudoers file that has aliases
that reference themselves.
- Fix a crash in visudo when checking a sudoers file in strict mode
when alias errors are present.
Major changes between version 1.7.2p5 and 1.7.2p6:
- When doing a glob match, short circuit if gl_pathc is 0.
- Fix a bug introduced with def_closefrom. The value of
def_closefrom already includes the +1.
- Added a note about the security implications of the fast_glob
sudoers option.
- Qualify the command even if it is in the current working directory,
e.g. "./foo" instead of just returning "foo". This removes
an ambiguity between real commands and possible pseudo-commands
in command matching.
- Fix installation of sudoers.ldap in "make install" when
--with-ldap was specified without a directory.
Major changes between version 1.7.2p4 and 1.7.2p5:
- Fix size arg when realloc()ing include stack.
- Avoid a duplicate fclose() of the sudoers file.
Major changes between version 1.7.2p3 and 1.7.2p4:
- Fix a bug that could allow users with permission to run sudoedit
to run arbitrary commands.
Major changes between version 1.7.2p2 and 1.7.2p3:
- Fix printing of entries with multiple host entries on
a single line.
- Fix use after free when sending error messages via email.
- Use setrlimit64(), if available, instead of setrlimit() when
setting AIX resource limits since rlim_t is 32bits.
Major changes between version 1.7.2p1 and 1.7.2p2:
- Fixed a a bug where the negation operator in a Cmnd_List
was not being honored.
- No longer produce a parse error when #includedir references a
directory that contains no valid filenames.
- The sudo.man.pl and sudoers.man.pl files are now included in
the distribution for people who wish to regenerate the man pages.
- Fixed the emulation of krb5_get_init_creds_opt_alloc() for MIT kerberos.
- When authenticating via PAM, set PAM_RUSER and PAM_RHOST early so
they can be used during authentication.
Major changes between version 1.7.2 and 1.7.2p1:
- Fixed the expansion of the %h escape in
#include file names introduced in sudo 1.7.1.
Major changes between version 1.7.1 and 1.7.2:
- A new #includedir directive is available in sudoers.
This can be used to implement an /etc/sudo.d directory. Files
in an includedir are not edited by visudo unless they contain a
syntax error.
- The -g option did not work properly when only setting the group
(and not the user). Also, in -l mode the wrong user was displayed
for sudoers entries where only the group was allowed to be set.
- Fixed a problem with the alias checking in visudo which
could prevent visudo from exiting.
- Sudo will now correctly parse the shell-style /etc/environment
file format used by pam_env on Linux.
- When doing password and group database lookups, sudo will only
cache an entry by name or by id, depending on how the entry was
looked up. Previously, sudo would cache by both name and id
from a single lookup, but this breaks sites that have multiple
password or group database names that map to the same uid or
gid.
- User and group names in sudoers may now be enclosed in double
quotes to avoid having to escape special characters.
- BSM audit fixes when changing to a non-root uid.
- Experimental non-Unix group support. Currently only works with
Quest Authorization Services and allows Active Directory groups
fixes for Minix-3.
- For Netscape/Mozilla-derived LDAP SDKs the certificate and key
paths may be specified as a directory or a file. However, version
5.0 of the SDK only appears to support using a directory (despite
documentation to the contrary). If SSL client initialization
fails and the certificate or key paths look like they could be
default file name, strip off the last path element and try again.
- A setenv() compatibility fix for Linux systems, where a NULL
value is treated the same as an empty string and the variable
name is checked against the NULL pointer.
Major changes between version 1.7.0 and 1.7.1:
- Fixed a bug in the version of glob() supplied with
sudo that affected character classes and ranges.
- Fixed a NULL pointer dereference when the sudoers
file mode or owner was incorrect.
- Fixed a NULL pointer dereference when a PAM module
called the sudo conversation function during a phase other
than authentication.
- Fixed an LDAP compatibility problem with the AIX LDAP libraries.
- A new Defaults option "pwfeedback" will cause sudo to provide
visual feedback when the user is entering a password.
- A new Defaults option "fast_glob" will cause sudo to use the
fnmatch() function for file name globbing instead
of glob(). When this option is enabled, sudo will
not check the file system when expanding wildcards. This
is faster but a side effect is that relative paths with
wildcard will no longer work.
- New BSM audit support for systems that support it such as FreeBSD
and Mac OS X.
- The file name specified with the #include directive may
now include a %h escape which is expanded to the short form of
hostname.
- The -k flag may now be specified along with a command, causing the
user's timestamp file to be ignored.
- New support for Tivoli-based LDAP START_TLS, present in AIX.
- New support for /etc/netsvc.conf on AIX.
- The unused alias checks in visudo now handle the case of an alias
referring to another alias.
- A new Defaults option "umask_override" will cause sudo to set
the umask specified in sudoers even if it is more permissive
than the invoking user's umask.
Major changes between version 1.6.9p19 and 1.7.0:
- Rewritten parser that converts sudoers into a set of data structures.
This eliminates a number of ordering issues and makes it possible to
apply sudoers Defaults entries before searching for the command.
It also adds support for per-command Defaults specifications.
- Sudoers now supports a #include facility to allow the
inclusion of other sudoers-format files.
- Sudo's -l (list) flag has been enhanced:
- applicable Defaults options are now listed
- a command argument can be specified for testing
whether a user may run a specific command.
- a new -U flag can be used in conjunction with
sudo -l to allow root (or a user with
sudo ALL) to list another user's privileges.
- A new -g flag has been added to allow the user to specify a
primary group to run the command as. The sudoers syntax has been
extended to include a group section in the Runas specification.
- A uid may now be used anywhere a username is valid.
- The secure_path run-time Defaults option has been restored.
- Password and group data is now cached for fast lookups.
- The file descriptor at which sudo starts closing all open files is now
configurable via sudoers and, optionally, the command line.
- visudo will now warn about aliases that are defined but
not used.
- The -i and -s command line flags now take an optional command
to be run via the shell. Previously, the argument was passed
to the shell as a script to run.
- Improved LDAP support. SASL authentication may now be used in
conjunction when connecting to an LDAP server. The krb5_ccname
parameter in ldap.conf may be used to enable Kerberos.
- Support for /etc/nsswitch.conf. LDAP users may now use nsswitch.conf
to specify the sudoers order. E.g.:
sudoers: ldap files
to check LDAP, then /etc/sudoers. The default is files,
even when LDAP support is compiled in. This differs from sudo 1.6
where LDAP was always consulted first.
- Support for /etc/environment on AIX and Linux. If sudo is
run with the -i flag, the contents of /etc/environment are
used to populate the new environment that is passed to the command
being run.
- Sudo now ignores user .ldaprc files as well as system LDAP defaults.
All LDAP configuration is now in /etc/ldap.conf
(or whichever file was specified by configure's
--with-ldap-conf-file option).
If you are using TLS, you may now need to specify:
tls_checkpeer no
in sudo's ldap.conf unless ldap.conf references a valid certificate
authority file(s).
- If no terminal is available or if the new -A flag is specified,
sudo will use a helper program to read the password if one is
configured. Typically, this is a graphical password prompter
such as ssh-askpass.
- A new Defaults option, "mailfrom" that sets the value of the
"From:" field in the warning/error mail. If unspecified, the
login name of the invoking user is used.
- Resource limits are now set to the default value for the
user the command is being run as on AIX systems.
-
A new Defaults option, "env_file" that refers to a file containing
environment variables to be set in the command being run.
- A new -n flag is available which may be used to indicate
that sudo should not prompt the user for a password and,
instead, exit with an error if authentication is required.
-
A new Defaults option, "sudoers_locale" that can be used to set
the locale to be used when parsing the sudoers file.
-
sudoedit now checks the EDITOR and VISUAL environment
variables to make sure sudoedit is not re-invoking itself
(or sudo). This allows one to set EDITOR to sudoedit without
getting into an infinite loop for programs that need to
invoke an editor such as crontab(1). Also added SUDO_EDITOR
environment variable which is used by sudoedit in preference
to EDITOR/VISUAL.
-
The versions of glob(3) and fnmatch(3) bundled
with sudo now support POSIX character classes.
-
If sudo needs to prompt for a password and it is unable to
disable echo (and no askpass program is defined), it will
refuse to run unless the "visiblepw" Defaults option has
been specified.
-
Prior to version 1.7.0, hitting enter/return at the Password:
prompt would exit sudo. In sudo 1.7.0 and beyond, this is
treated as an empty password. To exit sudo, the user must
now press ^C or ^D at the prompt.