Ubuntu 4171-2: Apport vulnerabilities

    Date 04 Nov 2019
    446
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in Apport.
    ==========================================================================
    Ubuntu Security Notice USN-4171-2
    November 04, 2019
    
    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-4171-1 fixed several vulnerabilities in apport. This update provides
    the corresponding update for Ubuntu 14.04 ESM.
    
    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 14.04 ESM:
      apport                          2.14.1-0ubuntu3.29+esm2
      python-apport                   2.14.1-0ubuntu3.29+esm2
      python3-apport                  2.14.1-0ubuntu3.29+esm2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4171-2
      https://usn.ubuntu.com/4171-1
      CVE-2019-11481, CVE-2019-11482, CVE-2019-11483, CVE-2019-11485,
      CVE-2019-15790
    

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