openSUSE Security Update: ecryptfs-utils: Update to fix various symlink race attacks
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Announcement ID:    openSUSE-SU-2011:0902-1
Rating:             important
References:         #709771 
Affected Products:
                    openSUSE 11.4
                    openSUSE 11.3
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   An update that contains security fixes can now be installed.

Description:

   This update of ecryptfs-utils fixes several security
   problems:

   - CVE-2011-1831 - Race condition when checking mountpoint
   during mount.
   - CVE-2011-1832 - Race condition when checking mountpoint
   during unmount.
   - CVE-2011-1833 - Race condition when checking source
   during mount.
   - CVE-2011-1834 - Improper mtab handling allowing
   corruption due to resource limits, signals, etc.
   - CVE-2011-1835 - Key poisoning in ecryptfs-setup-private
   due to insecure temp directory.
   - CVE-2011-1837 - Predictable lock counter name and
   associated races.


Patch Instructions:

   To install this openSUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - openSUSE 11.4:

      zypper in -t patch ecryptfs-utils-4986

   - openSUSE 11.3:

      zypper in -t patch ecryptfs-utils-4986

   To bring your system up-to-date, use "zypper patch".


Package List:

   - openSUSE 11.4 (i586 x86_64):

      ecryptfs-utils-83-6.7.1

   - openSUSE 11.4 (x86_64):

      ecryptfs-utils-32bit-83-6.7.1

   - openSUSE 11.3 (i586 x86_64):

      ecryptfs-utils-83-3.3.1

   - openSUSE 11.3 (x86_64):

      ecryptfs-utils-32bit-83-3.3.1


References:

   https://bugzilla.novell.com/709771

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