Ubuntu 3866-3: Ghostscript regression

    Date26 Feb 2019
    CategoryUbuntu
    2862
    Posted ByLinuxSecurity Advisories
    USN-3866-2 introduced a regression in Ghostscript.
    ==========================================================================
    Ubuntu Security Notice USN-3866-3
    February 26, 2019
    
    ghostscript regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    USN-3866-2 introduced a regression in Ghostscript.
    
    Software Description:
    - ghostscript: PostScript and PDF interpreter
    
    Details:
    
    USN-3866-2 fixed a regression in Ghostscript. The Ghostscript update
    introduced a new regression that resulted in certain pages being printed
    with a blue background. This update fixes the problem.
    
    Original advisory details:
    
     Tavis Ormandy discovered that Ghostscript incorrectly handled certain
     PostScript files. 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, execute arbitrary code, or cause a
     denial of service.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.10:
      ghostscript                     9.26~dfsg+0-0ubuntu0.18.10.7
      libgs9                          9.26~dfsg+0-0ubuntu0.18.10.7
    
    Ubuntu 18.04 LTS:
      ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.7
      libgs9                          9.26~dfsg+0-0ubuntu0.18.04.7
    
    Ubuntu 16.04 LTS:
      ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.7
      libgs9                          9.26~dfsg+0-0ubuntu0.16.04.7
    
    Ubuntu 14.04 LTS:
      ghostscript                     9.26~dfsg+0-0ubuntu0.14.04.7
      libgs9                          9.26~dfsg+0-0ubuntu0.14.04.7
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3866-3
      https://usn.ubuntu.com/usn/usn-3866-1
      https://launchpad.net/bugs/1817308
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.10.7
      https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.04.7
      https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.16.04.7
      https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.14.04.7
    
    
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