Ubuntu 4171-1: Apport vulnerabilities

    Date30 Oct 2019
    CategoryUbuntu
    395
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Apport.
    ==========================================================================
    Ubuntu Security Notice USN-4171-1
    October 30, 2019
    
    apport vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 19.04
    - 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:
    
    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                          2.20.11-0ubuntu8.1
      python-apport                   2.20.11-0ubuntu8.1
      python3-apport                  2.20.11-0ubuntu8.1
    
    Ubuntu 19.04:
      apport                          2.20.10-0ubuntu27.2
      python-apport                   2.20.10-0ubuntu27.2
      python3-apport                  2.20.10-0ubuntu27.2
    
    Ubuntu 18.04 LTS:
      apport                          2.20.9-0ubuntu7.8
      python-apport                   2.20.9-0ubuntu7.8
      python3-apport                  2.20.9-0ubuntu7.8
    
    Ubuntu 16.04 LTS:
      apport                          2.20.1-0ubuntu2.20
      python-apport                   2.20.1-0ubuntu2.20
      python3-apport                  2.20.1-0ubuntu2.20
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4171-1
      CVE-2019-11481, CVE-2019-11482, CVE-2019-11483, CVE-2019-11485,
      CVE-2019-15790
    
    Package Information:
      https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu8.1
      https://launchpad.net/ubuntu/+source/apport/2.20.10-0ubuntu27.2
      https://launchpad.net/ubuntu/+source/apport/2.20.9-0ubuntu7.8
      https://launchpad.net/ubuntu/+source/apport/2.20.1-0ubuntu2.20
    
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