Ubuntu 1349-1: X.Org vulnerability

    Date26 Jan 2012
    CategoryUbuntu
    51
    Posted ByLinuxSecurity Advisories
    X could be made to start by a user who lacked appropriate permissions.
    ==========================================================================
    Ubuntu Security Notice USN-1349-1
    January 26, 2012
    
    xorg vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 11.10
    - Ubuntu 11.04
    - Ubuntu 10.10
    - Ubuntu 10.04 LTS
    
    Summary:
    
    X could be made to start by a user who lacked appropriate permissions.
    
    Software Description:
    - xorg: X.Org X Window System
    
    Details:
    
    It was discovered that the X wrapper incorrectly checked certain console
    permissions when launched by unprivileged users. An attacker connected
    remotely could use this flaw to start X, bypassing the console permissions
    check.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 11.10:
      xserver-xorg                    1:7.6+7ubuntu7.1
    
    Ubuntu 11.04:
      xserver-xorg                    1:7.6+4ubuntu3.2
    
    Ubuntu 10.10:
      xserver-xorg                    1:7.5+6ubuntu3.1
    
    Ubuntu 10.04 LTS:
      xserver-xorg                    1:7.5+5ubuntu1.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1349-1
      CVE-2011-4613
    
    Package Information:
      https://launchpad.net/ubuntu/+source/xorg/1:7.6+7ubuntu7.1
      https://launchpad.net/ubuntu/+source/xorg/1:7.6+4ubuntu3.2
      https://launchpad.net/ubuntu/+source/xorg/1:7.5+6ubuntu3.1
      https://launchpad.net/ubuntu/+source/xorg/1:7.5+5ubuntu1.1
    
    
    
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