Ubuntu 4111-1: Ghostscript vulnerabilities

    Date28 Aug 2019
    CategoryUbuntu
    2362
    Posted ByLinuxSecurity Advisories
    Ghostscript could be made to access arbitrary files if it opened a specially crafted file.
    ==========================================================================
    Ubuntu Security Notice USN-4111-1
    August 29, 2019
    
    ghostscript vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Ghostscript could be made to access arbitrary files if it opened a
    specially crafted file.
    
    Software Description:
    - ghostscript: PostScript and PDF interpreter
    
    Details:
    
    Hiroki Matsukuma discovered that the PDF interpreter in Ghostscript
    did not properly restrict privileged calls when ‘-dSAFER’
    restrictions were in effect. If a user or automated system were
    tricked into processing a specially crafted file, a remote attacker
    could possibly use this issue to access arbitrary files.
    (CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      ghostscript                     9.26~dfsg+0-0ubuntu7.3
      libgs9                          9.26~dfsg+0-0ubuntu7.3
    
    Ubuntu 18.04 LTS:
      ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.11
      libgs9                          9.26~dfsg+0-0ubuntu0.18.04.11
    
    Ubuntu 16.04 LTS:
      ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.11
      libgs9                          9.26~dfsg+0-0ubuntu0.16.04.11
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4111-1
      CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu7.3
      https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.04.11
      https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.16.04.11
    
    
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