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    Ubuntu 4520-1: Exim SpamAssassin vulnerability

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    Exim SpamAssassin could be made to execute aribitrary code if it received crafted .cf files/rules.
    ==========================================================================
    Ubuntu Security Notice USN-4520-1
    September 18, 2020
    
    sa-exim vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Exim SpamAssassin could be made to execute aribitrary code if it
    received crafted .cf files/rules.
    
    Software Description:
    - sa-exim: SpamAssassin filter for Exim
    
    Details:
    
    It was discovered that Exim SpamAssassin does not properly handle
    configuration strings. An attacker could possibly use this issue to
    execute arbitrary code. (CVE-2019-19920)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      sa-exim                         4.2.1-14+deb8u1build0.16.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4520-1
      CVE-2019-19920
    
    Package Information:
      https://launchpad.net/ubuntu/+source/sa-exim/4.2.1-14+deb8u1build0.16.04.1
    
    

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