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    Ubuntu 4451-1: ppp vulnerability

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    ppp could be made to load arbitrary kernel modules and possibly run programs.
    ==========================================================================
    Ubuntu Security Notice USN-4451-1
    August 04, 2020
    
    ppp vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 20.04 LTS
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    ppp could be made to load arbitrary kernel modules and possibly run
    programs.
    
    Software Description:
    - ppp: Point-to-Point Protocol (PPP)
    
    Details:
    
    Thomas Chauchefoin discovered that ppp incorrectly handled module loading.
    A local attacker could use this issue to load arbitrary kernel modules and
    possibly execute arbitrary code.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 20.04 LTS:
      ppp                             2.4.7-2+4.1ubuntu5.1
    
    Ubuntu 18.04 LTS:
      ppp                             2.4.7-2+2ubuntu1.3
    
    Ubuntu 16.04 LTS:
      ppp                             2.4.7-1+2ubuntu1.16.04.3
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4451-1
      CVE-2020-15704
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+4.1ubuntu5.1
      https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+2ubuntu1.3
      https://launchpad.net/ubuntu/+source/ppp/2.4.7-1+2ubuntu1.16.04.3
    
    

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