Low: xorg-x11-server

Issue Overview:

A flaw was found in the way the X.Org server handled lock files. A local user with access to the system console could use this flaw to determine the existence of a file in a directory not accessible to the user, via a symbolic link attack. (CVE-2011-4028)

A race condition was found in the way the X.Org server managed temporary lock files. A local attacker could use this flaw to perform a symbolic link attack, allowing them to make an arbitrary file world readable, leading to the disclosure of sensitive information. (CVE-2011-4029)

Affected Packages:

xorg-x11-server

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

New Packages:

i686:  
    xorg-x11-server-common-1.10.6-1.12.amzn1.i686  
    xorg-x11-server-Xvfb-1.10.6-1.12.amzn1.i686  
    xorg-x11-server-Xephyr-1.10.6-1.12.amzn1.i686  
    xorg-x11-server-Xnest-1.10.6-1.12.amzn1.i686  
    xorg-x11-server-debuginfo-1.10.6-1.12.amzn1.i686  
  
noarch:  
    xorg-x11-server-source-1.10.6-1.12.amzn1.noarch  
  
src:  
    xorg-x11-server-1.10.6-1.12.amzn1.src  
  
x86_64:  
    xorg-x11-server-debuginfo-1.10.6-1.12.amzn1.x86_64  
    xorg-x11-server-Xephyr-1.10.6-1.12.amzn1.x86_64  
    xorg-x11-server-Xnest-1.10.6-1.12.amzn1.x86_64  
    xorg-x11-server-Xvfb-1.10.6-1.12.amzn1.x86_64  
    xorg-x11-server-common-1.10.6-1.12.amzn1.x86_64  

Additional References

Red Hat: CVE-2011-4028, CVE-2011-4029

Mitre: CVE-2011-4028, CVE-2011-4029