Ubuntu 3272-2: Ghostscript regression

    Date16 May 2017
    CategoryUbuntu
    64
    Posted ByLinuxSecurity Advisories
    USN-3272-1 introduced a regression in Ghostscript.
    ==========================================================================
    Ubuntu Security Notice USN-3272-2
    May 16, 2017
    
    ghostscript regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 17.04
    - Ubuntu 16.10
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    USN-3272-1 introduced a regression in Ghostscript.
    
    Software Description:
    - ghostscript: PostScript and PDF interpreter
    
    Details:
    
    USN-3272-1 fixed vulnerabilities in Ghostscript. This change introduced
    a regression when the DELAYBIND feature is used with the eqproc
    command. This update fixes the problem.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     It was discovered that Ghostscript improperly handled parameters to
     the rsdparams and eqproc commands. An attacker could use these to
     craft a malicious document that could disable -dSAFER protections,
     thereby allowing the execution of arbitrary code, or cause a denial
     of service (application crash). (CVE-2017-8291)
    
     Kamil Frankowicz discovered a use-after-free vulnerability in the
     color management module of Ghostscript. An attacker could use this
     to cause a denial of service (application crash). (CVE-2016-10217)
    
     Kamil Frankowicz discovered a divide-by-zero error in the scan
     conversion code in Ghostscript. An attacker could use this to cause
     a denial of service (application crash). (CVE-2016-10219)
    
     Kamil Frankowicz discovered multiple NULL pointer dereference errors in
     Ghostscript. An attacker could use these to cause a denial of service
     (application crash). (CVE-2016-10220, CVE-2017-5951, CVE-2017-7207)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 17.04:
      ghostscript                     9.19~dfsg+1-0ubuntu7.4
      ghostscript-x                   9.19~dfsg+1-0ubuntu7.4
      libgs9                          9.19~dfsg+1-0ubuntu7.4
      libgs9-common                   9.19~dfsg+1-0ubuntu7.4
    
    Ubuntu 16.10:
      ghostscript                     9.19~dfsg+1-0ubuntu6.6
      ghostscript-x                   9.19~dfsg+1-0ubuntu6.6
      libgs9                          9.19~dfsg+1-0ubuntu6.6
      libgs9-common                   9.19~dfsg+1-0ubuntu6.6
    
    Ubuntu 16.04 LTS:
      ghostscript                     9.18~dfsg~0-0ubuntu2.6
      ghostscript-x                   9.18~dfsg~0-0ubuntu2.6
      libgs9                          9.18~dfsg~0-0ubuntu2.6
      libgs9-common                   9.18~dfsg~0-0ubuntu2.6
    
    Ubuntu 14.04 LTS:
      ghostscript                     9.10~dfsg-0ubuntu10.9
      ghostscript-x                   9.10~dfsg-0ubuntu10.9
      libgs9                          9.10~dfsg-0ubuntu10.9
      libgs9-common                   9.10~dfsg-0ubuntu10.9
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-3272-2
      http://www.ubuntu.com/usn/usn-3272-1
      https://launchpad.net/bugs/1687614
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ghostscript/9.19~dfsg+1-0ubuntu7.4
      https://launchpad.net/ubuntu/+source/ghostscript/9.19~dfsg+1-0ubuntu6.6
      https://launchpad.net/ubuntu/+source/ghostscript/9.18~dfsg~0-0ubuntu2.6
      https://launchpad.net/ubuntu/+source/ghostscript/9.10~dfsg-0ubuntu10.9
    
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