Important: xorg-x11-server

Issue Overview:

A use-after-free flaw was found in the way the X.Org server handled ImageText requests. A malicious, authorized client could use this flaw to crash the X.Org server or, potentially, execute arbitrary code with root privileges. (CVE-2013-4396)

Affected Packages:

xorg-x11-server

Issue Correction:
Run yum update xorg-x11-server to update your system.

New Packages:

i686:  
    xorg-x11-server-debuginfo-1.13.0-11.18.amzn1.i686  
    xorg-x11-server-common-1.13.0-11.18.amzn1.i686  
    xorg-x11-server-Xnest-1.13.0-11.18.amzn1.i686  
    xorg-x11-server-Xvfb-1.13.0-11.18.amzn1.i686  
    xorg-x11-server-Xephyr-1.13.0-11.18.amzn1.i686  
  
noarch:  
    xorg-x11-server-source-1.13.0-11.18.amzn1.noarch  
  
src:  
    xorg-x11-server-1.13.0-11.18.amzn1.src  
  
x86_64:  
    xorg-x11-server-Xephyr-1.13.0-11.18.amzn1.x86_64  
    xorg-x11-server-Xnest-1.13.0-11.18.amzn1.x86_64  
    xorg-x11-server-debuginfo-1.13.0-11.18.amzn1.x86_64  
    xorg-x11-server-Xvfb-1.13.0-11.18.amzn1.x86_64  
    xorg-x11-server-common-1.13.0-11.18.amzn1.x86_64  

Additional References

Red Hat: CVE-2013-4396

Mitre: CVE-2013-4396