[sudo-workers] sudo 1.7.0rc1 released

Todd C. Miller Todd.Miller at courtesan.com
Thu May 8 17:55:48 EDT 2008

This is the first release candidate of sudo version 1.7.0.  I'd
love to hear reports of success (or failure!) in real-world

Download links:

Changes from Sudo 1.7b4:

 * A sudo-specific environment file may be specified by the
   env_file option, with the same syntax as /etc/environment.
   This is available on all systems, even those that do not
   natively support /etc/environment.

 * More fixes to the AIX resource limit setting code.

 * Closed a few memory leaks in the parser found by valgrind.

 * Fixed a problem in "sudo -l" mode where a NOPASSWD tag would
   not be displayed in some circumstances.

 * Fixed a typo in the code that reads /etc/ldap.secret.

What's new in Sudo 1.7?

 * 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

 * 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 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.

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