[sudo-announce] sudo 1.8.28 released

Todd C. Miller Todd.Miller at sudo.ws
Mon Oct 14 09:00:33 MDT 2019


Sudo 1.8.28 is now available; this is a bug fix release.

This release fixes a potential security issue where a sudo user may
be able to run a command as root when the Runas specification
explicitly disallows root access, as long as the ALL keyword is
listed first.  This vulnerability has been assigned CVE-2019-14287.
For details, please see https://www.sudo.ws/alerts/minus_1_uid.html

Source:
    https://www.sudo.ws/dist/sudo-1.8.28.tar.gz
    ftp://ftp.sudo.ws/pub/sudo/sudo-1.8.28.tar.gz

SHA256 checksum:
    9129fa745a08caff0ce2042d2162b38eb9bf73bf43fcb248ac8b3a750c1f13a1
MD5 checksum:
    5afa5acd0c55b40916e4ad864607edfe

Binary packages:
    https://www.sudo.ws/download.html#binary

For a list of download mirror sites, see:
    https://www.sudo.ws/download_mirrors.html

Sudo web site:
    https://www.sudo.ws/

Sudo web site mirrors:
    https://www.sudo.ws/mirrors.html

Major changes between sudo 1.8.28 and 1.8.27

 * Sudo will now only set PAM_TTY to the empty string when no
   terminal is present on Solaris and Linux.  This workaround is
   only needed on those systems which may have PAM modules that
   misbehave when PAM_TTY is not set.

 * The mailerflags sudoers option now has a default value even if
   sendmail support was disabled at configure time.  Fixes a crash
   when the mailerpath sudoers option is set but mailerflags is not.
   Bug #878.

 * Sudo will now filter out last login messages on HP-UX unless it
   a shell is being run via "sudo -s" or "sudo -i".  Otherwise,
   when trusted mode is enabled, these messages will be displayed
   for each command.

 * On AIX, when the user's password has expired and PAM is not in use,
   sudo will now allow the user to change their password.
   Bug #883.

 * Sudo has a new -B command line option that will ring the terminal
   bell when prompting for a password.

 * Sudo no longer refuses to prompt for a password when it cannot
   determine the user's terminal as long as it can open /dev/tty.
   This allows sudo to function on systems where /proc is unavailable,
   such as when running in a chroot environment.

 * The "env_editor" sudoers flag is now on by default.  This makes
   source builds more consistent with the packages generated by
   sudo's mkpkg script.

 * Sudo no longer ships with pre-formatted copies of the manual pages.
   These were included for systems like IRIX that don't ship with an
   nroff utility.  There are now multiple Open Source nroff replacements
   so this should no longer be an issue.

 * Fixed a bad interaction with configure's --prefix and
   --disable-shared options.  Bug #886.

 * More verbose error message when a password is required and no terminal
   is present.  Bug #828.

 * Command tags, such as NOPASSWD, are honored when a user tries to run a
   command that is allowed by sudoers but which does not actually
   exist on the file system.  Bug #888.

 * Asturian translation for sudoers from translationproject.org.

 * I/O log timing files now store signal suspend and resume information
   in the form of a signal name instead of a number.

 * Fixed a bug introduced in 1.8.24 that prevented sudo from honoring
   the value of "ipa_hostname" from sssd.conf, if specified, when
   matching the host name.

 * Fixed a bug introduced in 1.8.21 that prevented the core dump
   resource limit set in the pam_limits module from taking effect.
   Bug #894.

 * Fixed parsing of double-quoted Defaults group and netgroup bindings.

 * The user ID is now used when matching sudoUser attributes in LDAP.
   Previously, the user name, group name and group IDs were used
   when matching but not the user ID.

 * Sudo now writes PAM messages to the user's terminal, if available,
   instead of the standard output or standard error.  This prevents
   PAM output from being intermixed with that of the command when
   output is sent to a file or pipe.  Bug #895.

 * Sudoedit now honors the umask and umask_override settings in sudoers.
   Previously, the user's umask was used as-is.

 * Fixed a bug where the terminal's file context was not restored
   when using SELinux RBAC.  Bug #898.

 * Fixed CVE-2019-14287, a bug where a sudo user may be able to
   run a command as root when the Runas specification explicitly
   disallows root access as long as the ALL keyword is listed first.
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