Ubuntu 2078-1: libXfont vulnerability

    Date07 Jan 2014
    CategoryUbuntu
    32
    Posted ByLinuxSecurity Advisories
    libXfont could be made to crash or run programs as an administrator if it opened a specially crafted font file.
    ==========================================================================
    Ubuntu Security Notice USN-2078-1
    January 07, 2014
    
    libxfont vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 13.10
    - Ubuntu 13.04
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    
    Summary:
    
    libXfont could be made to crash or run programs as an administrator if it
    opened a specially crafted font file.
    
    Software Description:
    - libxfont: X11 font rasterisation library
    
    Details:
    
    It was discovered that libXfont incorrectly handled certain malformed BDF
    fonts. An attacker could use a specially crafted font file to cause
    libXfont to crash, or possibly execute arbitrary code in order to gain
    privileges. The default compiler options for affected releases should
    reduce the vulnerability to a denial of service.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 13.10:
      libxfont1                       1:1.4.6-1ubuntu0.1
    
    Ubuntu 13.04:
      libxfont1                       1:1.4.5-2ubuntu0.13.04.1
    
    Ubuntu 12.10:
      libxfont1                       1:1.4.5-2ubuntu0.12.10.1
    
    Ubuntu 12.04 LTS:
      libxfont1                       1:1.4.4-1ubuntu0.1
    
    Ubuntu 10.04 LTS:
      libxfont1                       1:1.4.1-1ubuntu0.2
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2078-1
      CVE-2013-6462
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.6-1ubuntu0.1
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.5-2ubuntu0.13.04.1
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.5-2ubuntu0.12.10.1
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.4-1ubuntu0.1
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.1-1ubuntu0.2
    
    
    
    
    
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