[sudo-users] sudo 1.6.9 rc1 is now available

Todd C. Miller Todd.Miller at courtesan.com
Tue Jul 3 19:31:18 EDT 2007

A release candidate for sudo 1.6.9 is now available.  Unless a major
problem is found I expect to release this as 1.6.9 in a week's time.

Sudo 1.6.9 is basically 1.6.8p12 with a large number of changes
backported from the sudo 1.7 tree (those that don't depend on the
new parser in 1.7).  This makes it possible for the major features
present in 1.7 be tested independently and from the parser changes
(and many of the changes are things that people have been asking

You can download 1.6.9rc1 from:

The biggest change to be aware of is that the environment is no
longer preserved by default.  Commands run through sudo now receive
a minimal environment with certain variables passed through and/or
checked.  The list of variables allowed is configurable via the
env_keep and env_check options in sudoers.

The other major changes in 1.6.9rc1 are:

 o Fixed a file descriptor leak when the lecture file option is enabled.

 o Added to the list of variables to remove from the environment.

 o Fixed a Kerberos V security issue that could allow a
   user to authenticate using a fake KDC.

 o Pulled in updated configure and libtool from sudo 1.7.

 o PAM is now the default on systems where it is supported.

 o Removed POSIX saved uid use; the stay_setuid option now
   requires the setreuid() or setresuid() functions to work.

 o Regenerated configure with up to date autoconf and libtool.

 o Fixed fd leak when lecture file option is enabled.

 o Removed used of POSIX saved uids.  The stay_setuid
   option now requires setreuid() or setresuid().

 o PAM fixes.  If the user enters ^C at the password prompt,
   abort instead of trying to authenticate with an empty password
   (which causes an annoying delay).  Also Call pam_open_session()
   and pam_close_session() to give pam_limits a chance to run.

 o Security fix for Kerberos5.  If we cannot get a valid service
   key using the default keytab it is a fatal error.  Now uses
   krb5_verify_user() and krb5_init_secure_context() if they
   are available.

 o Fixed securid5 authentication.

 o Added fcntl F_CLOSEM support to closefrom().

 o Added NOEXEC support for AIX 5.3.

 o Sudo now uses the supplemental group vector for matching.
   This fixes problems with split group lines in /etc/group
   as well as multiple group sources in nsswitch.conf.

 o Added more environment variables to remove by default.

 o Mail from sudo now includes an Auto-Submitted: auto-generated
   header ala rfc 3834.

 o Reworked the environment handling code.

 o Remove the --with-execv option, it was not useful.

 o Use TCSADRAIN instead of TCSAFLUSH in tgetpass() since
   some OSes have issues with TCSAFLUSH.

 o Use glob(3) instead of fnmatch(3) for matching pathnames
   and stat() each result that matches the basename of the user's
   command.  This makes "cd /usr/bin ; sudo ./blah" work when
   sudoers allows /usr/bin/blah.

 o Reworked the syslog long line splitting code based on changes
   from Eygene Ryabinkin.

 o Sudo can now with deal more than 32 network interfaces on

 o Visudo will now honor command line arguments in the EDITOR or
   VISUAL environment variables if env_editor is enabled.

 o LDAP now honors rootbinddn, timelimit and bind_timelimit in

 o For LDAP, do a sub tree search instead of a base search (one
   level in the tree only) for sudo right objects.  This allows
   system administrators to categorize the rights in a tree to
   make them easier to manage.

 o Added support for Solaris 10 project resource limits.

 o Moved LDAP schema data into separate files.

 o Added support for setting environment variables on the command
   line if the command has the SETENV tag set in sudoers or
   if the setenv option is set.

 o Added a -E flag to preserve the environment if the SETENV tag
   or the setenv option has been set.

 o The sudoers2ldif script now parses Runas users.

 o The -- flag now behaves as documented.

 - todd

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