Ubuntu 1546-1: libgc vulnerability

    Date28 Aug 2012
    CategoryUbuntu
    100
    Posted ByLinuxSecurity Advisories
    Applications using libgc could be made to crash or run arbitraryprograms as your login.
    ==========================================================================
    Ubuntu Security Notice USN-1546-1
    August 28, 2012
    
    libgc vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    - Ubuntu 11.10
    - Ubuntu 11.04
    - Ubuntu 10.04 LTS
    - Ubuntu 8.04 LTS
    
    Summary:
    
    Applications using libgc could be made to crash or run arbitrary
    programs as your login.
    
    Software Description:
    - libgc: Boehm-Demers-Weiser garbage collecting storage allocator library
    
    Details:
    
    It was discovered that multiple integer overflows existed in the
    malloc and calloc implementations in the Boehm-Demers-Weiser garbage
    collecting memory allocator (libgc). These could allow an attacker
    to cause a denial of service or possibly execute arbitrary code.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      libgc1c2                        1:7.1-8ubuntu0.12.04.1
    
    Ubuntu 11.10:
      libgc1c2                        1:7.1-8ubuntu0.11.10.1
    
    Ubuntu 11.04:
      libgc1c2                        1:6.8-1.2ubuntu3.2
    
    Ubuntu 10.04 LTS:
      libgc1c2                        1:6.8-1.2ubuntu1.1
    
    Ubuntu 8.04 LTS:
      libgc1c2                        1:6.8-1.1ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1546-1
      CVE-2012-2673
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libgc/1:7.1-8ubuntu0.12.04.1
      https://launchpad.net/ubuntu/+source/libgc/1:7.1-8ubuntu0.11.10.1
      https://launchpad.net/ubuntu/+source/libgc/1:6.8-1.2ubuntu3.2
      https://launchpad.net/ubuntu/+source/libgc/1:6.8-1.2ubuntu1.1
      https://launchpad.net/ubuntu/+source/libgc/1:6.8-1.1ubuntu0.1
    
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