Ubuntu 1142-1: GDM vulnerability

    Date01 Jun 2011
    CategoryUbuntu
    39
    Posted ByLinuxSecurity Advisories
    GDM could be made to launch a browser and leak information about the system.
    ==========================================================================
    Ubuntu Security Notice USN-1142-1
    June 01, 2011
    
    gdm vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 11.04
    
    Summary:
    
    GDM could be made to launch a browser and leak information about the system.
    
    Software Description:
    - gdm: GNOME Display Manager
    
    Details:
    
    Henne Vogelsang discovered that under certain PolicyKit configurations, GDM
    could be made to launch a browser. A local attacker could exploit this to
    gain access to files with the privileges of the gdm user. PolicyKit is not
    configured in this manner in Ubuntu by default.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 11.04:
      gdm                             2.32.1-0ubuntu3.2
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      CVE-2011-1709
    
    Package Information:
      https://launchpad.net/ubuntu/+source/gdm/2.32.1-0ubuntu3.2
    
    
    
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