Ubuntu 1618-1: Exim vulnerability

    Date26 Oct 2012
    CategoryUbuntu
    59
    Posted ByLinuxSecurity Advisories
    Exim could be made to run programs if it received specially crafted network traffic.
    ==========================================================================
    Ubuntu Security Notice USN-1618-1
    October 26, 2012
    
    exim4 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    - Ubuntu 11.10
    - Ubuntu 11.04
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Exim could be made to run programs if it received specially crafted network
    traffic.
    
    Software Description:
    - exim4: Exim is a mail transport agent
    
    Details:
    
    It was discovered that Exim incorrectly handled DKIM DNS decoding. This
    flaw could allow a remote attacker to execute arbitrary code.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.10:
      exim4-daemon-custom             4.80-3ubuntu1.1
      exim4-daemon-heavy              4.80-3ubuntu1.1
      exim4-daemon-light              4.80-3ubuntu1.1
    
    Ubuntu 12.04 LTS:
      exim4-daemon-custom             4.76-3ubuntu3.1
      exim4-daemon-heavy              4.76-3ubuntu3.1
      exim4-daemon-light              4.76-3ubuntu3.1
    
    Ubuntu 11.10:
      exim4-daemon-custom             4.76-2ubuntu1.1
      exim4-daemon-heavy              4.76-2ubuntu1.1
      exim4-daemon-light              4.76-2ubuntu1.1
    
    Ubuntu 11.04:
      exim4-daemon-custom             4.74-1ubuntu1.3
      exim4-daemon-heavy              4.74-1ubuntu1.3
      exim4-daemon-light              4.74-1ubuntu1.3
    
    Ubuntu 10.04 LTS:
      exim4-daemon-custom             4.71-3ubuntu1.4
      exim4-daemon-heavy              4.71-3ubuntu1.4
      exim4-daemon-light              4.71-3ubuntu1.4
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1618-1
      CVE-2012-5671
    
    Package Information:
      https://launchpad.net/ubuntu/+source/exim4/4.80-3ubuntu1.1
      https://launchpad.net/ubuntu/+source/exim4/4.76-3ubuntu3.1
      https://launchpad.net/ubuntu/+source/exim4/4.76-2ubuntu1.1
      https://launchpad.net/ubuntu/+source/exim4/4.74-1ubuntu1.3
      https://launchpad.net/ubuntu/+source/exim4/4.71-3ubuntu1.4
    
    
    
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