Ubuntu 3143-1: c-ares vulnerability

    Date30 Nov 2016
    CategoryUbuntu
    82
    Posted ByLinuxSecurity Advisories
    c-ares could be made to crash or run programs if it processed a specially crafted hostname.
    ==========================================================================
    Ubuntu Security Notice USN-3143-1
    November 30, 2016
    
    c-ares vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.10
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    c-ares could be made to crash or run programs if it processed a specially
    crafted hostname.
    
    Software Description:
    - c-ares: library for asynchronous name resolves
    
    Details:
    
    Gzob Qq discovered that c-ares incorrectly handled certain hostnames. A
    remote attacker could use this issue to cause applications using c-ares to
    crash, resulting in 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 16.10:
      libc-ares2                      1.11.0-1ubuntu0.1
    
    Ubuntu 16.04 LTS:
      libc-ares2                      1.10.0-3ubuntu0.1
    
    Ubuntu 14.04 LTS:
      libc-ares2                      1.10.0-2ubuntu0.1
    
    Ubuntu 12.04 LTS:
      libc-ares2                      1.7.5-1ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-3143-1
      CVE-2016-5180
    
    Package Information:
      https://launchpad.net/ubuntu/+source/c-ares/1.11.0-1ubuntu0.1
      https://launchpad.net/ubuntu/+source/c-ares/1.10.0-3ubuntu0.1
      https://launchpad.net/ubuntu/+source/c-ares/1.10.0-2ubuntu0.1
      https://launchpad.net/ubuntu/+source/c-ares/1.7.5-1ubuntu0.1
    
    
    
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