Ubuntu 1191-1: libXfont vulnerability

    Date15 Aug 2011
    CategoryUbuntu
    54
    Posted ByLinuxSecurity Advisories
    libXfont could be made to run programs as an administrator if it opened a specially crafted file.
    ==========================================================================
    Ubuntu Security Notice USN-1191-1
    August 15, 2011
    
    libxfont vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 11.04
    - Ubuntu 10.10
    - Ubuntu 10.04 LTS
    
    Summary:
    
    libXfont could be made to run programs as an administrator if it opened a
    specially crafted file.
    
    Software Description:
    - libxfont: X11 font rasterisation library
    
    Details:
    
    Tomas Hoger discovered that libXfont incorrectly handled certain malformed
    compressed 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.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 11.04:
      libxfont1                       1:1.4.3-2ubuntu0.1
    
    Ubuntu 10.10:
      libxfont1                       1:1.4.2-1ubuntu0.1
    
    Ubuntu 10.04 LTS:
      libxfont1                       1:1.4.1-1ubuntu0.1
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1191-1
      CVE-2011-2895
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.3-2ubuntu0.1
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.2-1ubuntu0.1
      https://launchpad.net/ubuntu/+source/libxfont/1:1.4.1-1ubuntu0.1
    
    
    
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