Ubuntu 1656-1: Libxml2 vulnerability

    Date05 Dec 2012
    CategoryUbuntu
    32
    Posted ByLinuxSecurity Advisories
    Applications using libxml2 could be made to crash or run programs asyour login if they opened a specially crafted file.
    ==========================================================================
    Ubuntu Security Notice USN-1656-1
    December 06, 2012
    
    libxml2 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    - Ubuntu 11.10
    - Ubuntu 10.04 LTS
    - Ubuntu 8.04 LTS
    
    Summary:
    
    Applications using libxml2 could be made to crash or run programs as
    your login if they opened a specially crafted file.
    
    Software Description:
    - libxml2: GNOME XML library
    
    Details:
    
    It was discovered that libxml2 had a heap-based buffer underflow
    when parsing entities. If a user or automated system were tricked into
    processing a specially crafted XML document, applications linked against
    libxml2 could be made to crash or possibly execute arbitrary code.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.10:
      libxml2                         2.8.0+dfsg1-5ubuntu2.1
    
    Ubuntu 12.04 LTS:
      libxml2                         2.7.8.dfsg-5.1ubuntu4.3
    
    Ubuntu 11.10:
      libxml2                         2.7.8.dfsg-4ubuntu0.5
    
    Ubuntu 10.04 LTS:
      libxml2                         2.7.6.dfsg-1ubuntu1.7
    
    Ubuntu 8.04 LTS:
      libxml2                         2.6.31.dfsg-2ubuntu1.11
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1656-1
      CVE-2012-5134
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libxml2/2.8.0+dfsg1-5ubuntu2.1
      https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.3
      https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-4ubuntu0.5
      https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.7
      https://launchpad.net/ubuntu/+source/libxml2/2.6.31.dfsg-2ubuntu1.11
    
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