SUSE-SU-2014:0744-1: moderate: Security update for xorg-x11-server

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for xorg-x11-server
______________________________________________________________________________

Announcement ID:    SUSE-SU-2014:0744-1
Rating:             moderate
References:         #813178 #813683 #814653 #816813 #843652 #853846 
                    
Cross-References:   CVE-2013-1940 CVE-2013-4396 CVE-2013-6424
                   
Affected Products:
                    SUSE Linux Enterprise Server 11 SP1 LTSS
______________________________________________________________________________

   An update that solves three vulnerabilities and has three
   fixes is now available.

Description:


   This is a SLES 11 SP1 LTSS rollup update for the X.Org Server package.

   The following security issues have been fixed:

       * CVE-2013-6424: Integer underflow in the xTrapezoidValid macro in
         render/picture.h in X.Org allowed context-dependent attackers to
         cause a denial of service (crash) via a negative bottom value.
       * CVE-2013-4396: Use-after-free vulnerability in the doImageText
         function in dix/dixfonts.c in the xorg-server module before 1.14.4
         in X.Org X11 allowed remote authenticated users to cause a denial of
         service (daemon crash) or possibly execute arbitrary code via a
         crafted ImageText request that triggers memory-allocation failure.
       * CVE-2013-1940: X.Org X server did not properly restrict access to
         input events when adding a new hot-plug device, which might have
         allowed physically proximate attackers to obtain sensitive
         information, as demonstrated by reading passwords from a tty.

   The following non-security issues have been fixed:

       * rfbAuthReenable is accessing rfbClient structure that was in most
         cases already freed. It actually needs only ScreenPtr, so pass it
         directly. (bnc#816813)
       * Memory leaks in ARGB cursor handling. (bnc#813178, bnc#813683)

   Security Issues:

       * CVE-2013-1940
         <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1940>
       * CVE-2013-4396
         <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4396>
       * CVE-2013-6424
         <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6424>


Patch Instructions:

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

   - SUSE Linux Enterprise Server 11 SP1 LTSS:

      zypper in -t patch slessp1-xorg-x11-Xvnc-9126

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


Package List:

   - SUSE Linux Enterprise Server 11 SP1 LTSS (i586 s390x x86_64):

      xorg-x11-Xvnc-7.4-27.40.70.1
      xorg-x11-server-7.4-27.40.70.1
      xorg-x11-server-extra-7.4-27.40.70.1


References:

   http://support.novell.com/security/cve/CVE-2013-1940.html
   http://support.novell.com/security/cve/CVE-2013-4396.html
   http://support.novell.com/security/cve/CVE-2013-6424.html
   https://bugzilla.novell.com/813178
   https://bugzilla.novell.com/813683
   https://bugzilla.novell.com/814653
   https://bugzilla.novell.com/816813
   https://bugzilla.novell.com/843652
   https://bugzilla.novell.com/853846
   http://download.suse.com/patch/finder/?keywords=ba40d48b0976dd6e6e280de949ecbe09