[sudo-announce] sudo 1.8.6 released

Todd C. Miller Todd.Miller at courtesan.com
Wed Sep 5 20:04:41 EDT 2012

Sudo version 1.8.6 is now available.  See the list of major changes
below for details.


Binary packages:

For a list of download mirror sites, see:

Sudo web site:

Sudo web site mirrors:

Major changes between sudo 1.8.6 and 1.8.5p3:

 * Sudo is now built with the -fstack-protector flag if the the
   compiler supports it.  Also, the -zrelro linker flag is used if
   supported.  The --disable-hardening configure option can be used
   to build sudo without stack smashing protection.

 * Sudo is now built as a Position Independent Executable (PIE)
   if supported by the compiler and linker.

 * If the user is a member of the "exempt" group in sudoers, they
   will no longer be prompted for a password even if the -k flag
   is specified with the command.  This makes "sudo -k command"
   consistent with the behavior one would get if the user ran "sudo
   -k" immediately before running the command.

 * The sudoers file may now be a symbolic link.  Previously, sudo
   would refuse to read sudoers unless it was a regular file.

 * The sudoreplay command can now properly replay sessions where
   no tty was present.

 * The sudoers plugin now takes advantage of symbol visibility
   controls when supported by the compiler or linker.  As a result,
   only a small number of symbols are exported which significantly
   reduces the chances of a conflict with other shared objects.

 * Improved support for the Tivoli Directory Server LDAP client
   libraries.  This includes support for using LDAP over SSL (ldaps)
   as well as support for the BIND_TIMELIMIT, TLS_KEY and TLS_CIPHERS
   ldap.conf options.  A new ldap.conf option, TLS_KEYPW can be
   used to specify a password to decrypt the key database.

 * When constructing a time filter for use with LDAP sudoNotBefore    
   and sudoNotAfter attributes, the current time now includes tenths
   of a second.  This fixes a problem with timed entries on Active

 * 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.

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