Ubuntu 4171-5: Apport regression

    Date 18 Mar 2020
    416
    Posted By LinuxSecurity Advisories
    USN-4171-1 introduced a regression in Apport.
    ==========================================================================
    Ubuntu Security Notice USN-4171-5
    March 18, 2020
    
    apport regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    USN-4171-1 introduced a regression in Apport.
    
    Software Description:
    - apport: automatically generate crash reports for debugging
    
    Details:
    
    USN-4171-1 fixed vulnerabilities in Apport. This caused a regression in
    autopkgtest and python2 compatibility.  This update fixes the problem.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     Kevin Backhouse discovered Apport would read its user-controlled settings
     file as the root user. This could be used by a local attacker to possibly
     crash Apport or have other unspecified consequences. (CVE-2019-11481)
     
     Sander Bos discovered a race-condition in Apport during core dump
     creation. This could be used by a local attacker to generate a crash report
     for a privileged process that is readable by an unprivileged user.
     (CVE-2019-11482)
     
     Sander Bos discovered Apport mishandled crash dumps originating from
     containers. This could be used by a local attacker to generate a crash
     report for a privileged process that is readable by an unprivileged user.
     (CVE-2019-11483)
     
     Sander Bos discovered Apport mishandled lock-file creation. This could be
     used by a local attacker to cause a denial of service against Apport.
     (CVE-2019-11485)
     
     Kevin Backhouse discovered Apport read various process-specific files with
     elevated privileges during crash dump generation. This could could be used
     by a local attacker to generate a crash report for a privileged process
     that is readable by an unprivileged user. (CVE-2019-15790)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      apport                          2.20.11-0ubuntu8.6
      python-apport                   2.20.11-0ubuntu8.6
      python3-apport                  2.20.11-0ubuntu8.6
    
    Ubuntu 18.04 LTS:
      apport                          2.20.9-0ubuntu7.12
      python-apport                   2.20.9-0ubuntu7.12
      python3-apport                  2.20.9-0ubuntu7.12
    
    Ubuntu 16.04 LTS:
      apport                          2.20.1-0ubuntu2.22
      python-apport                   2.20.1-0ubuntu2.22
      python3-apport                  2.20.1-0ubuntu2.22
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4171-5
      https://usn.ubuntu.com/4171-1
      https://launchpad.net/bugs/1851806, https://launchpad.net/bugs/1854237
    
    Package Information:
      https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu8.6
      https://launchpad.net/ubuntu/+source/apport/2.20.9-0ubuntu7.12
      https://launchpad.net/ubuntu/+source/apport/2.20.1-0ubuntu2.22
    

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