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NEWS
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What's new in Sudo 1.9.14
* The sudoers plugin now canonicalizes command path names before
matching (where possible). This fixes a bug where sudo could
execute the wrong path if there are multiple symbolic links with
the same target and the same base name in sudoers that a user is
allowed to run. GitHub issue #228.
* Improved command matching when a chroot is specified in sudoers.
The sudoers plugin will now change the root directory id needed
before performing command matching. Previously, the root directory
was simply prepended to the path that was being processed.
* When NETGROUP_BASE is set in the ldap.conf file, sudo will now
perform its own netgroup lookups of the host name instead of
using the system innetgr(3) function. This guarantees that user
and host netgroup lookups are performed using the same LDAP
server (or servers).
* Fixed a bug introduced in sudo 1.9.13 that resulted in a missing
" ; " separator between environment variables and the command
in log entries.
* The visudo utility now displays a warning when it ignores a file
in an include dir such as /etc/sudoers.d.
* When running a command in a pseudo-terminal, sudo will initialize
the terminal settings even if it is the background process.
Previously, sudo only initialized the pseudo-terminal when running
in the foreground. This fixes an issue where a program that
checks the window size would read the wrong value when sudo was
running in the background.
* Fixed a bug where only the first two digits of the TSID field
being was logged. Bug #1046.
* The "log_pty" sudoers option is now enabled by default. To
restore the historic behavior where a command is run in the
user's terminal, add "Defaults !use_pty" to the sudoers file.
GitHub issue #258.
* Sudo's "-b" option now works when the command is run in a
pseudo-terminal.
* When disabling core dumps, sudo now only modifies the soft limit
and leaves the hard limit as-is. This avoids problems on Linux
when sudo does not have CAP_SYS_RESOURCE, which may be the case
when run inside a container. GitHub issue #42.
* Sudo configuration file paths have been converted to colon-separated
lists of paths. This makes it possible to have configuration
files on a read-only file system while still allowing for local
modifications in a different (writable) directory. The new
--enable-adminconf configure option can be used to specify a
directory that is searched for configuration files in preference
to the sysconfdir (which is usually /etc).
* The "intercept_verify" sudoers option is now only applied when
the "intercept" option is set in sudoers. Previously, it was
also applied when "log_subcmds" was enabled.
* The NETGROUP_QUERY ldap.conf parameter can now be disabled for
LDAP servers that do not support querying the nisNetgroup object
by its nisNetgroupTriple attribute, while still allowing sudo to
query the LDAP server directly to determine netgroup membership.
What's new in Sudo 1.9.13p3
* Fixed a bug introduced in sudo 1.9.13 that caused a syntax error
when "list" was used as a user or host name. GitHub issue #246.
* Fixed a bug that could cause sudo to hang when running a command
in a pseudo-terminal when there is still input buffered after a
command has exited.
* Fixed "sudo -U otheruser -l command". This is a regression in
sudo 1.9.13. GitHub issue #248.
* Fixed "sudo -l command args" when matching a command in sudoers
with command line arguments. This is a regression in sudo 1.9.13.
GitHub issue #249.
What's new in Sudo 1.9.13p2
* Fixed the --enable-static-sudoers option, broken in sudo 1.9.13.
GitHub issue #245.
* Fixed a potential double-free bug when matching a sudoers rule
that contains a per-command chroot directive (CHROOT=dir). This
bug was introduced in sudo 1.9.8.
What's new in Sudo 1.9.13p1
* Fixed a typo in the configure script that resulted in a line
like "]: command not found" in the output. GitHub issue #238.
* Corrected the order of the C23 [[noreturn]] attribute in function
prototypes. This fixes a build error with GCC 13. GitHub issue
#239.
* The "check" make target misbehaved when there was more than
one version of the UTF-8 C locale in the output of "locale -a".
GitHub issue #241.
* Removed a dependency on the AC_SYS_YEAR2038 macro in configure.ac.
This was added in autoconf 2.72 but sudo's configure.ac only
required autoconf 2.70.
* Relaxed the autoconf version requirement to version 2.69.
What's new in Sudo 1.9.13
* Fixed a bug running relative commands via sudo when "log_subcmds"
is enabled. GitHub issue #194.
* Fixed a signal handling bug when running sudo commands in a shell
script. Signals were not being forwarded to the command when
the sudo process was not run in its own process group.
* Fixed a bug in cvtsudoers' LDIF parsing when the file ends without
a newline and a backslash is the last character of the file.
* Fixed a potential use-after-free bug with cvtsudoers filtering.
GitHub issue #198.
* Added a reminder to the default lecture that the password will
not echo. This line is only displayed when the pwfeedback option
is disabled. GitHub issue #195.
* Fixed potential memory leaks in error paths. GitHub issues #199,
#202.
* Fixed potential NULL dereferences on memory allocation failure.
GitHub issues #204, #211.
* Sudo now uses C23-style attributes in function prototypes instead
of gcc-style attributes if supported.
* Added a new "list" pseudo-command in sudoers to allow a user to
list another user's privileges. Previously, only root or a user
with the ability to run any command as either root or the target
user on the current host could use the -U option. This also
includes a fix to the log entry when a user lacks permission to
run "sudo -U otheruser -l command". Previously, the logs would
indicate that the user tried to run the actual command, now the
log entry includes the list operation.
* JSON logging now escapes control characters if they happen to
appear in the command or environment.
* New Albanian translation from translationproject.org.
* Regular expressions in sudoers or logsrvd.conf may no longer
contain consecutive repetition operators. This is implementation-
specific behavior according to POSIX, but some implementations
will allocate excessive amounts of memory. This mainly affects
the fuzzers.
* Sudo now builds AIX-style shared libraries and dynamic shared
objects by default instead of svr4-style. This means that the
default sudo plugins are now .a (archive) files that contain a
.so shared object file instead of bare .so files. This was done
to improve compatibility with the AIX Freeware ecosystem,
specifically, the AIX Freeware build of OpenSSL. Sudo will still
load svr4-style .so plugins and if a .so file is requested,
either via sudo.conf or the sudoers file, and only the .a file
is present, sudo will convert the path from plugin.so to
plugin.a(plugin.so) when loading it. This ensures compatibility
with existing configurations. To restore the old, pre-1.9.13
behavior, run configure using the --with-aix-soname=svr4 option.
* Sudo no longer checks the ownership and mode of the plugins that
it loads. Plugins are configured via either the sudo.conf or
sudoers file which are trusted configuration files. These checks
suffered from time-of-check vs. time-of-use race conditions and
complicate loading plugins that are not simple paths. Ownership
and mode checks are still performed when loading the sudo.conf
and sudoers files, which do not suffer from race conditions.
The sudo.conf "developer_mode" setting is no longer used.
* Control characters in sudo log messages and "sudoreplay -l"
output are now escaped in octal format. Space characters in the
command path are also escaped. Command line arguments that
contain spaces are surrounded by single quotes and any literal
single quote or backslash characters are escaped with a backslash.
This makes it possible to distinguish multiple command line
arguments from a single argument that contains spaces.
* Improved support for DragonFly BSD which uses a different struct
procinfo than either FreeBSD or 4.4BSD.
* Fixed a compilation error on Linux arm systems running older
kernels that may not define EM_ARM in linux/elf-em.h.
GitHub issue #232.
* Fixed a compilation error when LDFLAGS contains -Wl,--no-undefined.
Sudo will now link using -Wl,--no-undefined by default if possible.
GitHub issue #234.
* Fixed a bug executing a command with a very long argument vector
when "log_subcmds" or "intercept" is enabled on a system where
"intercept_type" is set to "trace". GitHub issue #194.
* When sudo is configured to run a command in a pseudo-terminal
but the standard input is not connected to a terminal, the command
will now be run as a background process. This works around a
problem running sudo commands in the background from a shell
script where changing the terminal to raw mode could interfere
with the interactive shell that ran the script.
GitHub issue #237.
* A missing include file in sudoers is no longer a fatal error
unless the error_recovery plugin argument has been set to false.
What's new in Sudo 1.9.12p2
* Fixed a compilation error on Linux/aarch64. GitHub issue #197.
* Fixed a potential crash introduced in the fix for GitHub issue #134.
If a user's sudoers entry did not have any RunAs user's set,
running "sudo -U otheruser -l" would dereference a NULL pointer.
* Fixed a bug introduced in sudo 1.9.12 that could prevent sudo
from creating a I/O files when the "iolog_file" sudoers setting
contains six or more Xs.
* Fixed a compilation issue on AIX with the native compiler.
GitHub issue #231.
* Fixed CVE-2023-22809, a flaw in sudo's -e option (aka sudoedit)
that could allow a malicious user with sudoedit privileges to
edit arbitrary files.
What's new in Sudo 1.9.12p1
* Sudo's configure script now does a better job of detecting when
the -fstack-clash-protection compiler option does not work.
GitHub issue #191.
* Fixed CVE-2022-43995, a potential out-of-bounds write for passwords
smaller than 8 characters when passwd authentication is enabled.
This does not affect configurations that use other authentication
methods such as PAM, AIX authentication or BSD authentication.
* Fixed a build error with some configurations compiling host_port.c.
What's new in Sudo 1.9.12
* Fixed a bug in the ptrace-based intercept mode where the current
working directory could include garbage at the end.
* Fixed a compilation error on systems that lack the stdint.h
header. Bug #1035
* Fixed a bug when logging the command's exit status in intercept
mode. The wrong command could be logged with the exit status.
* For ptrace-based intercept mode, sudo will now attempt to
verify that the command path name, arguments and environment
have not changed from the time when they were authorized by the
security policy. The new "intercept_verify" sudoers setting can
be used to control this behavior.
* Fixed running commands with a relative path (e.g. ./foo) in
intercept mode. Previously, this would fail if sudo's current
working directory was different from that of the command.
* Sudo now supports passing the execve(2) system call the NULL
pointer for the `argv` and/or `envp` arguments when in intercept
mode. Linux treats a NULL pointer like an empty array.
* The sudoers LDAP schema now allows sudoUser, sudoRunasUser and
sudoRunasGroup to include UTF-8 characters, not just 7-bit ASCII.
* Fixed a problem with "sudo -i" on SELinux when the target user's
home directory is not searchable by sudo. GitHub issue #160.
* Neovim has been added to the list of visudo editors that support
passing the line number on the command line.
* Fixed a bug in sudo's SHA384 and SHA512 message digest padding.
* Added a new "-N" (--no-update) command line option to sudo which
can be used to prevent sudo from updating the user's cached
credentials. It is now possible to determine whether or not a
user's cached credentials are currently valid by running:
$ sudo -Nnv
and checking the exit value. One use case for this is to indicate
in a shell prompt that sudo is "active" for the user.
* PAM approval modules are no longer invoked when running sub-commands
in intercept mode unless the "intercept_authenticate" option is set.
There is a substantial performance penalty for calling into PAM
for each command run. PAM approval modules are still called for
the initial command.
* Intercept mode on Linux now uses process_vm_readv(2) and
process_vm_writev(2) if available.
* The XDG_CURRENT_DESKTOP environment variable is now preserved
by default. This makes it possible for graphical applications
to choose the correct theme when run via sudo.
* On 64-bit systems, if sudo fails to load a sudoers group plugin,
it will use system-specific heuristics to try to locate a 64-bit
version of the plugin.
* The cvtsudoers manual now documents the JSON and CSV output
formats. GitHub issue #172.
* Fixed a bug where sub-commands were not being logged to a remote
log server when log_subcmds was enabled. GitHub issue #174.
* The new log_stdin, log_stdout, log_stderr, log_ttyin, and log_ttyout
sudoers settings can be used to support more fine-grained I/O logging.
The sudo front-end no longer allocates a pseudo-terminal when running
a command if the I/O logging plugin requests logging of stdin, stdout,
or stderr but not terminal input/output.
* Quieted a libgcrypt run-time initialization warning.
This fixes Debian bug #1019428 and Ubuntu bug #1397663.
* Fixed a bug in visudo that caused literal backslashes to be removed
from the EDITOR environment variable. GitHub issue #179.
* The sudo Python plugin now implements the "find_spec" method instead
of the the deprecated "find_module". This fixes a test failure when
a newer version of setuptools that doesn't include "find_module" is
found on the system.
* Fixed a bug introduced in sudo 1.9.9 where sudo_logsrvd created
the process ID file, usually /var/run/sudo/sudo_logsrvd.pid, as
a directory instead of a plain file. The same bug could result
in I/O log directories that end in six or more X's being created
literally in addition to the name being used as a template for
the mkdtemp(3) function.
* Fixed a long-standing bug where a sudoers rule with a command
line argument of "", which indicates the command may be run with
no arguments, would also match a literal "" on the command line.
GitHub issue #182.
* Added the -I option to visudo which only edits the main sudoers
file. Include files are not edited unless a syntax error is found.
* Fixed "sudo -l -U otheruser" output when the runas list is empty.
Previously, sudo would list the invoking user instead of the
list user. GitHub issue #183.
* Fixed the display of command tags and options in "sudo -l" output
when the RunAs user or group changes. A new line is started for
RunAs changes which means we need to display the command tags
and options again. GitHub issue #184.
* The sesh helper program now uses getopt_long(3) to parse the
command line options.
* The embedded copy of zlib has been updated to version 1.2.13.
* Fixed a bug that prevented event log data from being sent to the
log server when I/O logging was not enabled. This only affected
systems without PAM or configurations where the pam_session and
pam_setcred options were disabled in the sudoers file.
* Fixed a bug where "sudo -l" output included a carriage return
after the newline. This is only needed when displaying to a
terminal in raw mode. Bug #1042.
What's new in Sudo 1.9.11p3
* Fixed "connection reset" errors on AIX when running shell scripts
with the "intercept" or "log_subcmds" sudoers options enabled.
Bug #1034.
* Fixed very slow execution of shell scripts when the "intercept"
or "log_subcmds" sudoers options are set on systems that enable
Nagle's algorithm on the loopback device, such as AIX.
Bug #1034.
What's new in Sudo 1.9.11p2
* Fixed a compilation error on Linux/x86_64 with the x32 ABI.
* Fixed a regression introduced in 1.9.11p1 that caused a warning
when logging to sudo_logsrvd if the command returned no output.
What's new in Sudo 1.9.11p1
* Correctly handle EAGAIN in the I/O read/right events. This fixes
a hang seen on some systems when piping a large amount of data
through sudo, such as via rsync. Bug #963.
* Changes to avoid implementation or unspecified behavior when
bit shifting signed values in the protobuf library.
* Fixed a compilation error on Linux/aarch64.
* Fixed the configure check for seccomp(2) support on Linux.
* Corrected the EBNF specification for tags in the sudoers manual
page. GitHub issue #153.
What's new in Sudo 1.9.11
* Fixed a crash in the Python module with Python 3.9.10 on some
systems. Additionally, "make check" now passes for Python 3.9.10.
* Error messages sent via email now include more details, including
the file name and the line number and column of the error.
Multiple errors are sent in a single message. Previously, only
the first error was included.
* Fixed logging of parse errors in JSON format. Previously,
the JSON logger would not write entries unless the command and
runuser were set. These may not be known at the time a parse
error is encountered.
* Fixed a potential crash parsing sudoers lines larger than twice
the value of LINE_MAX on systems that lack the getdelim() function.
* The tests run by "make check" now unset the LANGUAGE environment
variable. Otherwise, localization strings will not match if
LANGUAGE is set to a non-English locale. Bug #1025.
* The "starttime" test now passed when run under Debian faketime.
Bug #1026.
* The Kerberos authentication module now honors the custom password
prompt if one has been specified.
* The embedded copy of zlib has been updated to version 1.2.12.
* Updated the version of libtool used by sudo to version 2.4.7.
* Sudo now defines _TIME_BITS to 64 on systems that define __TIMESIZE
in the header files (currently only GNU libc). This is required
to allow the use of 64-bit time values on some 32-bit systems.
* Sudo's "intercept" and "log_subcmds" options no longer force the
command to run in its own pseudo-terminal. It is now also
possible to intercept the system(3) function.
* Fixed a bug in sudo_logsrvd when run in store-first relay mode
where the commit point messages sent by the server were incorrect
if the command was suspended or received a window size change
event.
* Fixed a potential crash in sudo_logsrvd when the "tls_dhparams"
configuration setting was used.
* The "intercept" and "log_subcmds" functionality can now use
ptrace(2) on Linux systems that support seccomp(2) filtering.
This has the advantage of working for both static and dynamic
binaries and can work with sudo's SELinux RBAC mode. The following
architectures are currently supported: i386, x86_64, aarch64,
arm, mips (log_subcmds only), powerpc, riscv, and s390x. The
default is to use ptrace(2) where possible; the new "intercept_type"
sudoers setting can be used to explicitly set the type.
* New Georgian translation from translationproject.org.
* Fixed creating packages on CentOS Stream.
* Fixed a bug in the intercept and log_subcmds support where
the execve(2) wrapper was using the current environment instead
of the passed environment pointer. Bug #1030.
* Added AppArmor integration for Linux. A sudoers rule can now
specify an APPARMOR_PROFILE option to run a command confined by
the named AppArmor profile.
* Fixed parsing of the "server_log" setting in sudo_logsrvd.conf.
Non-paths were being treated as paths and an actual path was
treated as an error.
What's new in Sudo 1.9.10
* Added new "log_passwords" and "passprompt_regex" sudoers options.
If "log_passwords" is disabled, sudo will attempt to prevent passwords
from being logged. If sudo detects any of the regular expressions in
the "passprompt_regex" list in the terminal output, sudo will log '*'
characters instead of the terminal input until a newline or carriage
return is found in the input or an output character is received.
* Added new "log_passwords" and "passprompt_regex" settings to
sudo_logsrvd that operate like the sudoers options when logging
terminal input.
* Fixed several few bugs in the cvtsudoers utility when merging
multiple sudoers sources.
* Fixed a bug in sudo_logsrvd when parsing the sudo_logsrvd.conf
file, where the "retry_interval" in the [relay] section was not
being recognized.
* Restored the pre-1.9.9 behavior of not performing authentication
when sudo's -n option is specified. A new "noninteractive_auth"
sudoers option has been added to enable PAM authentication in
non-interactive mode. GitHub issue #131.
* On systems with /proc, if the /proc/self/stat (Linux) or
/proc/pid/psinfo (other systems) file is missing or invalid,
sudo will now check file descriptors 0-2 to determine the user's
terminal. Bug #1020.
* Fixed a compilation problem on Debian kFreeBSD. Bug #1021.
* Fixed a crash in sudo_logsrvd when running in relay mode if
an alert message is received.
* Fixed an issue that resulting in "problem with defaults entries"
email to be sent if a user ran sudo when the sudoers entry in
the nsswitch.conf file includes "sss" but no sudo provider is
configured in /etc/sssd/sssd.conf. Bug #1022.
* Updated the warning displayed when the invoking user is not
allowed to run sudo. If sudo has been configured to send mail
on failed attempts (see the mail_* flags in sudoers), it will
now print "This incident has been reported to the administrator."
If the "mailto" or "mailerpath" sudoers settings are disabled,
the message will not be printed and no mail will be sent.
GitHub issue #48.
* Fixed a bug where the user-specified command timeout was not
being honored if the sudoers rule did not also specify a timeout.
* Added support for using POSIX extended regular expressions in
sudoers rules. A command and/or arguments in sudoers are treated
as a regular expression if they start with a '^' character and
end with a '$'. The command and arguments are matched separately,
either one (or both) may be a regular expression.
Bug #578, GitHub issue #15.
* A user may now only run "sudo -U otheruser -l" if they have a
"sudo ALL" privilege where the RunAs user contains either "root"
or "otheruser". Previously, having "sudo ALL" was sufficient,
regardless of the RunAs user. GitHub issue #134.
* The sudo lecture is now displayed immediately before the password
prompt. As a result, sudo will no longer display the lecture
unless the user needs to enter a password. Authentication methods
that don't interact with the user via a terminal do not trigger
the lecture.
* Sudo now uses its own closefrom() emulation on Linux systems.
The glibc version may not work in a chroot jail where /proc is
not available. If close_range(2) is present, it will be used
in preference to /proc/self/fd.
What's new in Sudo 1.9.9
* Sudo can now be built with OpenSSL 3.0 without generating warnings
about deprecated OpenSSL APIs.
* A digest can now be specified along with the "ALL" command in
the LDAP and SSSD back-ends. Sudo 1.9.0 introduced support for
this in the sudoers file but did not include corresponding changes
for the other back-ends.
* visudo now only warns about an undefined alias or a cycle in an
alias once for each alias.
* The sudoRole cn was truncated by a single character in warning messages.
GitHub issue #115.
* The cvtsudoers utility has new --group-file and --passwd-file options
to use a custom passwd or group file when the --match-local option is
also used.
* The cvtsudoers utility can now filter or match based on a command.
* The cvtsudoers utility can now produce output in csv (comma-separated
value) format. This can be used to help generate entitlement reports.
* Fixed a bug in sudo_logsrvd that could result in the connection being
dropped for very long command lines.
* Fixed a bug where sudo_logsrvd would not accept a restore point
of zero.
* Fixed a bug in visudo where the value of the "editor" setting was not
used if it did not match the user's EDITOR environment variable.
This was only a problem if the "env_editor" setting was not enabled.
Bug #1000.
* Sudo now builds with the -fcf-protection compiler option and the
"-z now" linker option if supported.
* The output of "sudoreplay -l" now more closely matches the
traditional sudo log format.
* The sudo_sendlog utility will now use the full contents of the log.json
file, if present. This makes it possible to send sudo-format I/O logs
that use the newer log.json format to sudo_logsrvd without losing any
information.
* Fixed compilation of the arc4random_buf() replacement on systems with
arc4random() but no arc4random_buf(). Bug #1008.
* Sudo now uses its own getentropy() by default on Linux. The GNU libc
version of getentropy() will fail on older kernels that don't support
the getrandom() system call.
* It is now possible to build sudo with WolfSSL's OpenSSL compatibility
layer by using the --enable-wolfssl configure option.
* Fixed a bug related to Daylight Saving Time when parsing timestamps
in Generalized Time format. This affected the NOTBEFORE and
NOTAFTER options in sudoers. Bug #1006
* Added the -O and -P options to visudo, which can be used to check
or set the owner and permissions. This can be used in conjunction
with the -c option to check that the sudoers file ownership and
permissions are correct. Bug #1007.
* It is now possible to set resource limits in the sudoers file itself.
The special values "default" and "user" refer to the default system
limit and invoking user limit respectively. The core dump size limit
is now set to 0 by default unless overridden by the sudoers file.
* The cvtsudoers utility can now merge multiple sudoers sources into
a single, combined sudoers file. If there are conflicting entries,
cvtsudoers will attempt to resolve them but manual intervention
may be required. The merging of sudoers rules is currently fairly
simplistic but will be improved in a future release.
* Sudo was parsing but not applying the "deref" and "tls_reqcert"
ldap.conf settings. This meant the options were effectively
ignored which broke dereferencing of aliases in LDAP. Bug #1013.
* Clarified in the sudo man page that the security policy may
override the user's PATH environment variable. Bug #1014.
* When sudo is run in non-interactive mode (with the -n option), it
will now attempt PAM authentication and only exit with an error
if user interaction is required. This allows PAM modules that
don't interact with the user to succeed. Previously, sudo
would not attempt authentication if the -n option was specified.
Bug #956 and GitHub issue #83.
* Fixed a regression introduced in version 1.9.1 when sudo is
built with the --with-fqdn configure option. The local host
name was being resolved before the sudoers file was processed,
making it impossible to disable DNS lookups by negating the
"fqdn" sudoers option. Bug #1016.
* Added support for negated sudoUser attributes in the LDAP and
SSSD sudoers back ends. A matching sudoUser that is negated
will cause the sudoRole containing it to be ignored.
* Fixed a bug where the stack resource limit could be set to a
value smaller than that of the invoking user and not be reset
before the command was run. Bug #1017.
What's new in Sudo 1.9.8p2
* Fixed a potential out-of-bounds read with "sudo -i" when the
target user's shell is bash. This is a regression introduced
in sudo 1.9.8. Bug #998.
* sudo_logsrvd now only sends a log ID for first command of a session.
There is no need to send the log ID for each sub-command.
* Fixed a few minor memory leaks in intercept mode.
* Fixed a problem with sudo_logsrvd in relay mode if "store_first"
was enabled when handling sub-commands. A new zero-length journal
file was created for each sub-command instead of simply using
the existing journal file.
* Fixed a bug where sudoedit would fail if one of the directories
in the path to be edited had the immutable flag set (BSD, Linux
or macOS). GitHub issue #122.
What's new in Sudo 1.9.8p1
* Fixed support for passing a prompt (sudo -p) or a login class
(sudo -c) on the command line. This is a regression introduced
in sudo 1.9.8. Bug #993.
* Fixed a crash with "sudo ALL" rules in the LDAP and SSSD back-ends.
This is a regression introduced in sudo 1.9.8. Bug #994.
* Fixed a compilation error when the --enable-static-sudoers configure
option was specified. This is a regression introduced in sudo
1.9.8 caused by a symbol clash with the intercept and log server
protobuf functions.
What's new in Sudo 1.9.8
* It is now possible to transparently intercepting sub-commands
executed by the original command run via sudo. Intercept support
is implemented using LD_PRELOAD (or the equivalent supported by
the system) and so has some limitations. The two main limitations
are that only dynamic executables are supported and only the
execl, execle, execlp, execv, execve, execvp, and execvpe library
functions are currently intercepted. Its main use case is to
support restricting privileged shells run via sudo.
To support this, there is a new "intercept" Defaults setting and
an INTERCEPT command tag that can be used in sudoers. For example:
Cmnd_Alias SHELLS=/bin/bash, /bin/sh, /bin/csh, /bin/ksh, /bin/zsh
Defaults!SHELLS intercept
would cause sudo to run the listed shells in intercept mode.
This can also be set on a per-rule basis. For example:
Cmnd_Alias SHELLS=/bin/bash, /bin/sh, /bin/csh, /bin/ksh, /bin/zsh
chuck ALL = INTERCEPT: SHELLS
would only apply intercept mode to user "chuck" when running one
of the listed shells.
In intercept mode, sudo will not prompt for a password before
running a sub-command and will not allow a set-user-ID or
set-group-ID program to be run by default. The new
intercept_authenticate and intercept_allow_setid sudoers settings
can be used to change this behavior.
* The new "log_subcmds" sudoers setting can be used to log additional
commands run in a privileged shell. It uses the same mechanism as
the intercept support described above and has the same limitations.
* The new "log_exit_status" sudoers setting can be used to log
the exit status commands run via sudo. This is also a corresponding
"log_exit" setting in the sudo_logsrvd.conf eventlog stanza.
* Support for logging sudo_logsrvd errors via syslog or to a file.
Previously, most sudo_logsrvd errors were only visible in the
debug log.
* Better diagnostics when there is a TLS certificate validation error.
* Using the "+=" or "-=" operators in a Defaults setting that takes
a string, not a list, now produces a warning from sudo and a
syntax error from inside visudo.
* Fixed a bug where the "iolog_mode" setting in sudoers and sudo_logsrvd
had no effect when creating I/O log parent directories if the I/O log
file name ended with the string "XXXXXX".
* Fixed a bug in the sudoers custom prompt code where the size
parameter that was passed to the strlcpy() function was incorrect.
No overflow was possible since the correct amount of memory was
already pre-allocated.
* The mksigname and mksiglist helper programs are now built with
the host compiler, not the target compiler, when cross-compiling.
Bug #989.
* Fixed compilation error when the --enable-static-sudoers configure
option was specified. This was due to a typo introduced in sudo
1.9.7. GitHub PR #113.
What's new in Sudo 1.9.7p2
* When formatting JSON output, octal numbers are now stored as
strings, not numbers. The JSON spec does not actually support
octal numbers with a '0' prefix.
* Fixed a compilation issue on Solaris 9.
* Sudo now can handle the getgroups() function returning a different
number of groups for subsequent invocations. GitHub PR #106.
* When loading a Python plugin, python_plugin.so now verifies
that the module loaded matches the one we tried to load. This
allows sudo to display a more useful error message when trying
to load a plugin with a name that conflicts with a Python module
installed in the system location.
* Sudo no longer sets the the open files resource limit to "unlimited"
while it runs. This avoids a problem where sudo's closefrom()
emulation would need to close a very large number of descriptors
on systems without a way to determine which ones are actually open.
* Sudo now includes a configure check for va_copy or __va_copy and
only defines its own version if the configure test fails.
* Fixed a bug in sudo's utmp file handling which prevented old
entries from being reused. As a result, the utmp (or utmpx)
file was appended to unnecessarily. GitHub PR #108.
* Fixed a bug introduced in sudo 1.9.7 that prevented sudo_logsrvd
from accepting TLS connections when OpenSSL is used. Bug #988.
What's new in Sudo 1.9.7p1
* Fixed an SELinux sudoedit bug when the edited temporary file
could not be opened. The sesh helper would still be run even
when there are no temporary files available to install.
* Fixed a compilation problem on FreeBSD.
* The sudo_noexec.so file is now built as a module on all systems
other than macOS. This makes it possible to use other libtool
implementations such as slibtool. On macOS shared libraries and
modules are not interchangeable and the version of libtool shipped
with sudo must be used.
* Fixed a few bugs in the getgrouplist() emulation on Solaris when
reading from the local group file.
* Fixed a bug in sudo_logsrvd that prevented periodic relay server
connection retries from occurring in "store_first" mode.
* Disabled the nss_search()-based getgrouplist() emulation on HP-UX
due to a crash when the group source is set to "compat" in
/etc/nsswitch.conf. This is probably due to a mismatch between
include/compat/nss_dbdefs.h and what HP-UX uses internally. On
HP-UX we now just cycle through groups the slow way using
getgrent(). Bug #978.
What's new in Sudo 1.9.7
* The "fuzz" Makefile target now runs all the fuzzers for 8192
passes (can be overridden via the FUZZ_RUNS variable). This makes
it easier to run the fuzzers in-tree. To run a fuzzer indefinitely,
set FUZZ_RUNS=-1, e.g. "make FUZZ_RUNS=-1 fuzz".
* Fixed fuzzing on FreeBSD where the ld.lld linker returns an
error by default when a symbol is multiply-defined.
* Added support for determining local IPv6 addresses on systems
that lack the getifaddrs() function. This now works on AIX,
HP-UX and Solaris (at least). Bug #969.
* Fixed a bug introduced in sudo 1.9.6 that caused "sudo -V" to
report a usage error. Also, when invoked as sudoedit, sudo now
allows a more restricted set of options that matches the usage
statement and documentation. GitHub issue #95.
* Fixed a crash in sudo_sendlog when the specified certificate
or key does not exist or is invalid. Bug #970
* Fixed a compilation error when sudo is configured with the
--disable-log-client option.
* Sudo's limited support for SUCCESS=return entries in nsswitch.conf
is now documented. Bug #971.
* Sudo now requires autoconf 2.70 or higher to regenerate the
configure script. Bug #972.
* sudo_logsrvd now has a relay mode which can be used to create
a hierarchy of log servers. By default, when a relay server is
defined, messages from the client are forwarded immediately to
the relay. However, if the "store_first" setting is enabled,
the log will be stored locally until the command completes and
then relayed. Bug #965.
* Sudo now links with OpenSSL by default if it is available unless
the --disable-openssl configure option is used or both the
--disable-log-client and --disable-log-server configure options
are specified.
* Fixed configure's Python version detection when the version minor
number is more than a single digit, for example Python 3.10.
* The sudo Python module tests now pass for Python 3.10.
* Sudo will now avoid changing the datasize resource limit
as long as the existing value is at least 1GB. This works around
a problem on 64-bit HP-UX where it is not possible to exactly
restore the original datasize limit. Bug #973.
* Fixed a race condition that could result in a hang when sudo is
executed by a process where the SIGCHLD handler is set to SIG_IGN.
This fixes the bug described by GitHub PR #98.
* Fixed an out-of-bounds read in sudoedit and visudo when the
EDITOR, VISUAL or SUDO_EDITOR environment variables end in an
unescaped backslash. Also fixed the handling of quote characters
that are escaped by a backslash. GitHub issue #99.
* Fixed a bug that prevented the "log_server_verify" sudoers option
from taking effect.
* The sudo_sendlog utility has a new -s option to cause it to stop
sending I/O records after a user-specified elapsed time. This
can be used to test the I/O log restart functionality of sudo_logsrvd.
* Fixed a crash introduced in sudo 1.9.4 in sudo_logsrvd when
attempting to restart an interrupted I/O log transfer.
* The TLS connection timeout in the sudoers log client was previously
hard-coded to 10 seconds. It now uses the value of log_server_timeout.
* The configure script now outputs a summary of the user-configurable
options at the end, separate from output of configure script tests.
Bug #820.
* Corrected the description of which groups may be specified via the
-g option in the Runas_Spec section. Bug #975.
What's new in Sudo 1.9.6p1
* Fixed a regression introduced in sudo 1.9.6 that resulted in an
error message instead of a usage message when sudo is run with
no arguments.
What's new in Sudo 1.9.6
* Fixed a sudo_sendlog compilation problem with the AIX xlC compiler.
* Fixed a regression introduced in sudo 1.9.4 where the
--disable-root-mailer configure option had no effect.
* Added a --disable-leaks configure option that avoids some
memory leaks on exit that would otherwise occur. This is intended
to be used with development tools that measure memory leaks. It
is not safe to use in production at this time.
* Plugged some memory leaks identified by oss-fuzz and ASAN.
* Fixed the handling of sudoOptions for an LDAP sudoRole that
contains multiple sudoCommands. Previously, some of the options
would only be applied to the first sudoCommand.
* Fixed a potential out of bounds read in the parsing of NOTBEFORE
and NOTAFTER sudoers command options (and their LDAP equivalents).
* The parser used for reading I/O log JSON files is now more
resilient when processing invalid JSON.
* Fixed typos that prevented "make uninstall" from working.
GitHub issue #87.
* Fixed a regression introduced in sudo 1.9.4 where the last line
in a sudoers file might not have a terminating NUL character
added if no newline was present.
* Integrated oss-fuzz and LLVM's libFuzzer with sudo. The new
--enable-fuzzer configure option can be combined with the
--enable-sanitizer option to build sudo with fuzzing support.
Multiple fuzz targets are available for fuzzing different parts
of sudo. Fuzzers are built and tested via "make fuzz" or as part
of "make check" (even when sudo is not built with fuzzing support).
Fuzzing support currently requires the LLVM clang compiler (not gcc).
* Fixed the --enable-static-sudoers configure option.
GitHub issue #92.
* Fixed a potential out of bounds read sudo when is run by a user
with more groups than the value of "max_groups" in sudo.conf.
* Added an "admin_flag" sudoers option to make the use of the
~/.sudo_as_admin_successful file configurable on systems where
sudo is build with the --enable-admin-flag configure option.
This mostly affects Ubuntu and its derivatives. GitHub issue #56.
* The "max_groups" setting in sudo.conf is now limited to 1024.
This setting is obsolete and should no longer be needed.
* Fixed a bug in the tilde expansion of "CHROOT=dir" and "CWD=dir"
sudoers command options. A path "~/foo" was expanded to
"/home/userfoo" instead of "/home/user/foo". This also affects
the runchroot and runcwd Defaults settings.
* Fixed a bug on systems without a native getdelim(3) function
where very long lines could cause parsing of the sudoers file
to end prematurely. Bug #960.
* Fixed a potential integer overflow when converting the
timestamp_timeout and passwd_timeout sudoers settings to a
timespec struct.
* The default for the "group_source" setting in sudo.conf is now
"dynamic" on macOS. Recent versions of macOS do not reliably
return all of a user's non-local groups via getgroups(2), even
when _DARWIN_UNLIMITED_GETGROUPS is defined. Bug #946.
* Fixed a potential use-after-free in the PAM conversation function.
Bug #967.
* Fixed potential redefinition of sys/stat.h macros in sudo_compat.h.
Bug #968.
What's new in Sudo 1.9.5p2
* Fixed sudo's setprogname(3) emulation on systems that don't
provide it.
* Fixed a problem with the sudoers log server client where a partial
write to the server could result the sudo process consuming large
amounts of CPU time due to a cycle in the buffer queue. Bug #954.
* Added a missing dependency on libsudo_util in libsudo_eventlog.
Fixes a link error when building sudo statically.
* The user's KRB5CCNAME environment variable is now preserved when
performing PAM authentication. This fixes GSSAPI authentication
when the user has a non-default ccache.
* 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