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NEWS

What's new in Sudo 1.8.23

* PAM account management modules and BSD auto 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 the build-time process start time test on Linux when the
   test is run from within a container.  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 proper
   /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.

What's new in Sudo 1.8.22

* 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.

What's new in Sudo 1.8.21p2

* 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

What's new in Sudo 1.8.21p1

* 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 back-ends when a sudoRunAsGroup is
   specified but no sudoRunAsUser is present in the sudoRole.

What's new in Sudo 1.8.21

* 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.
   Bug #279.

* Friulian translation for sudo from translationproject.org.

What's new in Sudo 1.8.20p2

* Fixed a bug parsing /proc/pid/stat on Linux when the process
   name contains newlines.  This is not exploitable due to the /dev
   traversal changes in sudo 1.8.20p1.

What's new in Sudo 1.8.20p1

* 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,

What's new in Sudo 1.8.20

* 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 back-ends, just as they are in the
   sudoers back-end.

* 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
   back-end similar to what is already available in the LDAP back-end.

* 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 back-end when the fqdn
   sudoOption is enabled and no hostname value is present in
   /etc/sssd/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 included 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 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.

* Clarify in the sudoers manual that the #includedir directive
   diverts control to the files in the specified directory and,
   when parsing of those files is complete, returns control to the
   original file.  Bug #775.

What's new in Sudo 1.8.19p2

* 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.

What's new in Sudo 1.8.19p1

* Fixed a bug introduced in sudo 1.8.19 that resulted in the wrong
   syslog priority and facility being used.

What's new in Sudo 1.8.19

* 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 with the 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.

What's new in Sudo 1.8.18p1

* 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.

What's new in Sudo 1.8.18

* 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 back-ends.

* 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 back-ends.

* Fixed matching entries in the LDAP and SSSD back-ends when a
   RunAsGroup is specified but no RunAsUser is present.

* Fixed "sudo -l" output in the LDAP and SSSD back-ends when a
   RunAsGroup is specified but no RunAsUser is present.

What's new in Sudo 1.8.17p1

* 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.

What's new in Sudo 1.8.17

* 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 -v" 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.

* Fixed a bug on AIX where the stack size hard resource limit was
   being set to 2GB instead of 4GB on 64-bit systems.

* The SSSD back-end now properly supports "sudo -U otheruser -l".

* The SSSD back-end now uses the value of "ipa_hostname"
   from sssd.conf, if specified, when matching the host name.

* 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.

What's new in Sudo 1.8.16

* 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 back-ends are used.

* Fixed a bug that prevented the "mail_no_user" option from working
   properly with the LDAP back-end.

* In the LDAP and sssd back-ends, 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 back-end 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
   the Makefile.  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 back-ends 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.

What's new in Sudo 1.8.15

* 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.

* 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.

What's new in Sudo 1.8.14p3

* Fixed a bug introduced in sudo 1.8.14p2 that prevented sudo
   from working when no tty was present.

* Fixed tty detection on newer AIX systems where dev_t is 64-bit.

What's new in Sudo 1.8.14p2

* Fixed a bug introduced in sudo 1.8.14 that prevented the lecture
   file from being created.  Bug #704.

What's new in Sudo 1.8.14p1

* Fixed a bug introduced in sudo 1.8.14 that prevented the sssd
   back-end from working.  Bug #703.

What's new in Sudo 1.8.14

* 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.

What's new in Sudo 1.8.13

* 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.

What's new in Sudo 1.8.12

* 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.

What's new in Sudo 1.8.11p2

* 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.

What's new in Sudo 1.8.11p1

* 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 the environment blacklist to match newer-style
   bash functions.

What's new in Sudo 1.8.11

* 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

What's new in Sudo 1.8.10p3?

* Fixed expansion of %p 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 determining 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

What's new in Sudo 1.8.10p2?

* Fixed a hang introduced in sudo 1.8.10 when timestamp_timeout
   is set to zero.

What's new in Sudo 1.8.10p1?

* Fixed a bug introduced in sudo 1.8.10 that prevented the disabling
   of tty-based tickets.

* Fixed a bug with negated 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

What's new in Sudo 1.8.10?

* 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.

What's new in Sudo 1.8.9p5?

* 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.

What's new in Sudo 1.8.9p4?

* 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 running after sudo exited.

What's new in Sudo 1.8.9p3?

* Fixed a bug introduced in sudo 1.8.9 that prevented the tty name
   from being resolved properly on Linux systems.  Bug #630.

What's new in Sudo 1.8.9p2?

* Updated config.guess, config.sub and libtool to support the ppc64le
   architecture (IBM PowerPC Little Endian).

What's new in Sudo 1.8.9p1?

* 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.

What's new in Sudo 1.8.9?

* 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

What's new in Sudo 1.8.8?

* 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.

What's new in Sudo 1.8.7?

* 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 foreground
   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" sub-directory 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.

What's new in Sudo 1.8.6p8?

* 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.

What's new in Sudo 1.8.6p7?

* 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.

* 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).

What's new in Sudo 1.8.6p6?

* 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.

What's new in Sudo 1.8.6p5?

* 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.

What's new in Sudo 1.8.6p4?

* 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.

* Fixed 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.

What's new in Sudo 1.8.6p3?

* 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.

What's new in Sudo 1.8.6p2?

* 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.

What's new in Sudo 1.8.6p1?

* 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.

What's new in Sudo 1.8.6?

* 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.

What's new in Sudo 1.8.5p3?

* Fixed the loading of I/O plugins that conform to a plugin API
   version older than 1.2.

What's new in Sudo 1.8.5p2?

* 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.

What's new in Sudo 1.8.5p1?

* Fixed a bug that prevented files in an include directory from
   being evaluated.

What's new in Sudo 1.8.5?

* 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 back-end 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.

What's new in Sudo 1.8.4p5?

* Fixed a bug when matching against an IP address with an associated
   netmask in the sudoers file.  In certain circumstances, this
   could allow users to run commands on hosts they are not authorized
   for.

What's new in Sudo 1.8.4p4?

* Fixed a bug introduced in Sudo 1.8.4 which prevented "sudo -v"
   from working.

What's new in Sudo 1.8.4p3?

* Fixed a crash on FreeBSD when no tty is present.

* Fixed a bug introduced in Sudo 1.8.4 that allowed users to
   specify environment variables to set on the command line without
   having sudo "ALL" permissions or the "SETENV" tag.

* 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.

What's new in Sudo 1.8.4p2?

* 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.

What's new in Sudo 1.8.4p1?

* 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.

What's new in Sudo 1.8.4?

* 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.

* 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".

What's new in Sudo 1.8.3p2?

* 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.

What's new in Sudo 1.8.3p1?

* 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.

What's new in Sudo 1.8.3?

* 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.

What's new in Sudo 1.8.2?

* Sudo, visudo, sudoreplay and the sudoers plug-in now have natural
   language support (NLS). This can be disabled by passing configure
   the --disable-nls option.  Sudo will use gettext(), if available,
   to display translated messages.  All translations are coordinated
   via The Translation Project, http://translationproject.org/.

* 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 specifies 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.

What's new in Sudo 1.8.1p2?

* 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.

What's new in Sudo 1.8.1p1?

* 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".

What's new in Sudo 1.8.1?

* 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.

What's new in Sudo 1.8.0?

* 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.

What's new in Sudo 1.7.5?

* 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).

What's new in Sudo 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.

What's new in Sudo 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.

What's new in Sudo 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.

* The "make install" target now works correctly when sudo is built in a
   directory other than the source directory.

* 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
   correctly.  The SIGCONT signal was not propagated to the child process.

What's new in Sudo 1.7.4p3?

* A bug has been fixed where duplicate HOME environment variables could be
   present 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.

* Compilation problems on IRIX and other platforms have been fixed.

* If multiple PAM "auth" actions are specified and the user enters ^C at
   the password prompt, sudo will no longer prompt for a password for any
   subsequent "auth" actions.  Previously it was necessary to enter ^C for
   each "auth" action.

What's new in Sudo 1.7.4p2?

* A bug where sudo could spin in a busy loop waiting for the child process
   has been fixed.

What's new in Sudo 1.7.4p1?

* A bug introduced in sudo 1.7.3 that prevented the -k and -K options from
   functioning when the tty_tickets sudoers option is enabled has been fixed.

* Sudo no longer prints a warning when the -k or -K options are specified
   and the ticket file does not exist.

* It is now easier to cross-compile sudo.

What's new in Sudo 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.

* The tty_tickets sudoers option is now enabled by default.

* 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 (http://rc.quest.com/topics/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).

* 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.

* Fixed a problem in the restoration of the AIX authdb registry setting.

* Sudo will now fork(2) and wait until the command has completed before
   calling pam_close_session().

* The default syslog facility is now "authpriv" if the operating system
   supports it, else "auth".

What's new in Sudo 1.7.3?

* Support for logging I/O for the command being run.
   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 how to replay 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.

What's new in Sudo 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.

What's new in Sudo 1.7.1?

* 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.

What's new in Sudo 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:
    o applicable Defaults options are now listed
    o a command argument can be specified for testing whether a user
      may run a specific command.
    o a new -U flag can be used in conjunction with "sudo -l" to allow
      root (or a user with "sudo ALL") 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.

* 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.

* A new Defaults option, "env_file" that refers to a file containing
   environment variables to be set in the command being run.

* A new flag, -n, 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.

* 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 press ^C or ^D
   at the prompt.

* visudo will now check the sudoers file owner and mode in -c (check)
   mode when the -s (strict) flag is specified.

* 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.

System Information
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NEWS		96.74 KB	root/root	0644	2023-01-25 04:36:31
README		3.06 KB	root/root	0644	2023-01-25 04:36:31
README.LDAP		7.24 KB	root/root	0644	2023-01-25 04:36:31
TROUBLESHOOTING		14.29 KB	root/root	0644	2023-01-25 04:36:31
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