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    Ubuntu 4315-2: Apport vulnerabilities

    Date
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    Several security issues were fixed in Apport.
    ==========================================================================
    Ubuntu Security Notice USN-4315-2
    June 15, 2020
    
    apport vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 ESM
    
    Summary:
    
    Several security issues were fixed in Apport.
    
    Software Description:
    - apport: automatically generate crash reports for debugging
    
    Details:
    
    USN-4315-1 fixed several vulnerabilities in Apport. This update provides
    the corresponding update for Ubuntu 14.04 ESM.
    
    Original advisory 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 14.04 ESM:
      apport                          2.14.1-0ubuntu3.29+esm4
      python-apport                   2.14.1-0ubuntu3.29+esm4
      python3-apport                  2.14.1-0ubuntu3.29+esm4
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4315-2
      https://usn.ubuntu.com/4315-1
      CVE-2020-8831, CVE-2020-8833
    

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