Ubuntu 3403-1: Ghostscript vulnerabilities

    Date28 Aug 2017
    CategoryUbuntu
    47
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Ghostscript.
    ==========================================================================
    Ubuntu Security Notice USN-3403-1
    August 28, 2017
    
    ghostscript vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 17.04
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in Ghostscript.
    
    Software Description:
    - ghostscript: PostScript and PDF interpreter
    
    Details:
    
    Kamil Frankowicz discovered that Ghostscript mishandles references.
    A remote attacker could use this to cause a denial of service.
    (CVE-2017-11714)
    
    Kim Gwan Yeong discovered that Ghostscript could allow a heap-based
    buffer over-read and application crash. A remote attacker could use a
    crafted document to cause a denial of service. (CVE-2017-9611, 
    CVE-2017-9726, CVE-2017-9727, CVE-2017-9739)
    
    Kim Gwan Yeong discovered an use-after-free vulnerability in
    Ghostscript. A remote attacker could use a crafted file to cause a
    denial of service. (CVE-2017-9612)
    
    Kim Gwan Yeong discovered a lack of integer overflow check in
    Ghostscript. A remote attacker could use crafted PostScript document to
    cause a denial of service. (CVE-2017-9835)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 17.04:
      ghostscript                     9.19~dfsg+1-0ubuntu7.6
      ghostscript-x                   9.19~dfsg+1-0ubuntu7.6
      libgs9                          9.19~dfsg+1-0ubuntu7.6
      libgs9-common                   9.19~dfsg+1-0ubuntu7.6
    
    Ubuntu 16.04 LTS:
      ghostscript                     9.18~dfsg~0-0ubuntu2.7
      ghostscript-x                   9.18~dfsg~0-0ubuntu2.7
      libgs9                          9.18~dfsg~0-0ubuntu2.7
      libgs9-common                   9.18~dfsg~0-0ubuntu2.7
    
    Ubuntu 14.04 LTS:
      ghostscript                     9.10~dfsg-0ubuntu10.10
      ghostscript-x                   9.10~dfsg-0ubuntu10.10
      libgs9                          9.10~dfsg-0ubuntu10.10
      libgs9-common                   9.10~dfsg-0ubuntu10.10
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://www.ubuntu.com/usn/usn-3403-1
      CVE-2017-11714, CVE-2017-9611, CVE-2017-9612, CVE-2017-9726,
      CVE-2017-9727, CVE-2017-9739, CVE-2017-9835
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ghostscript/9.19~dfsg+1-0ubuntu7.6
      https://launchpad.net/ubuntu/+source/ghostscript/9.18~dfsg~0-0ubuntu2.7
      https://launchpad.net/ubuntu/+source/ghostscript/9.10~dfsg-0ubuntu10.10
    
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