Ubuntu 4315-1: Apport vulnerabilities

    Date 02 Apr 2020
    394
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in Apport.
    ==========================================================================
    Ubuntu Security Notice USN-4315-1
    April 02, 2020
    
    apport vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in Apport.
    
    Software Description:
    - apport: automatically generate crash reports for debugging
    
    Details:
    
    Maximilien Bourgeteau discovered that the Apport lock file was created with
    insecure permissions. This could allow a local attacker to escalate their
    privileges via a symlink attack. (CVE-2020-8831)
    
    Maximilien Bourgeteau discovered a race condition in Apport when setting
    crash report permissions. This could allow a local attacker to read
    arbitrary files via a symlink attack.  (CVE-2020-8833)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      apport                          2.20.11-0ubuntu8.8
      python-apport                   2.20.11-0ubuntu8.8
      python3-apport                  2.20.11-0ubuntu8.8
    
    Ubuntu 18.04 LTS:
      apport                          2.20.9-0ubuntu7.14
      python-apport                   2.20.9-0ubuntu7.14
      python3-apport                  2.20.9-0ubuntu7.14
    
    Ubuntu 16.04 LTS:
      apport                          2.20.1-0ubuntu2.23
      python-apport                   2.20.1-0ubuntu2.23
      python3-apport                  2.20.1-0ubuntu2.23
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4315-1
      CVE-2020-8831, CVE-2020-8833
    
    Package Information:
      https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu8.8
      https://launchpad.net/ubuntu/+source/apport/2.20.9-0ubuntu7.14
      https://launchpad.net/ubuntu/+source/apport/2.20.1-0ubuntu2.23
    

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