Ubuntu 1209-2: Libav vulnerabilities

    Date19 Sep 2011
    CategoryUbuntu
    40
    Posted ByLinuxSecurity Advisories
    Libav could be made to run programs as your login if it opened a specially crafted file.
    ==========================================================================
    Ubuntu Security Notice USN-1209-2
    September 19, 2011
    
    libav vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 11.04
    
    Summary:
    
    Libav could be made to run programs as your login if it opened a specially
    crafted file.
    
    Software Description:
    - libav: Multimedia player, server, encoder and transcoder
    
    Details:
    
    It was discovered that Libav incorrectly handled certain malformed ogg
    files. If a user were tricked into opening a crafted ogg file, an attacker
    could cause a denial of service via application crash, or possibly execute
    arbitrary code with the privileges of the user invoking the program.
    (CVE-2011-1196)
    
    It was discovered that Libav incorrectly handled certain malformed AMV
    files. If a user were tricked into opening a crafted AMV file, an attacker
    could cause a denial of service via application crash, or possibly execute
    arbitrary code with the privileges of the user invoking the program.
    (CVE-2011-1931)
    
    Emmanouel Kellinis discovered that Libav incorrectly handled certain
    malformed CAVS files. If a user were tricked into opening a crafted CAVS
    file, an attacker could cause a denial of service via application crash, or
    possibly execute arbitrary code with the privileges of the user invoking
    the program. (CVE-2011-3362)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 11.04:
      libavcodec52                    4:0.6.2-1ubuntu1.1
      libavformat52                   4:0.6.2-1ubuntu1.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1209-2
      http://www.ubuntu.com/usn/usn-1209-1
      CVE-2011-1196, CVE-2011-1931, CVE-2011-3362
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libav/4:0.6.2-1ubuntu1.1
    
    
    
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