Ubuntu 4124-2: Exim vulnerability

    Date16 Sep 2019
    CategoryUbuntu
    299
    Posted ByLinuxSecurity Advisories
    Exim could be made to run programs as an administrator if it received specially crafted network traffic.
    ==========================================================================
    Ubuntu Security Notice USN-4124-2
    September 16, 2019
    
    exim4 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 ESM
    
    Summary:
    
    Exim could be made to run programs as an administrator if it received
    specially crafted network traffic.
    
    Software Description:
    - exim4: Exim is a mail transport agent
    
    Details:
    
    USN-4124-1 fixed a vulnerability in Exim. This update provides
    the corresponding update for Ubuntu 14.04 ESM.
    
    Original advisory details:
    
     It was discovered that Exim incorrectly handled certain decoding
     operations. A remote attacker could possibly use this issue to execute
     arbitrary commands.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 ESM:
      exim4-daemon-heavy              4.82-3ubuntu2.4+esm1
      exim4-daemon-light              4.82-3ubuntu2.4+esm1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4124-2
      https://usn.ubuntu.com/4124-1
      CVE-2019-15846
    
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