ESB-2018.2807 - [Ubuntu] ghostscript: Multiple vulnerabilities 2018-09-21

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2807
                        Ghostscript vulnerabilities
                             21 September 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ghostscript
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Delete Arbitrary Files          -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-16802 CVE-2018-16585 CVE-2018-16543
                   CVE-2018-16542 CVE-2018-16541 CVE-2018-16540
                   CVE-2018-16539 CVE-2018-16513 CVE-2018-16511
                   CVE-2018-16510 CVE-2018-16509 CVE-2018-15911
                   CVE-2018-15910 CVE-2018-15909 CVE-2018-15908
                   CVE-2018-11645  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3768-1

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Ubuntu Security Notice USN-3768-1
September 19, 2018

ghostscript vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 18.04 LTS
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Ghostscript.

Software Description:
- - ghostscript: PostScript and PDF interpreter

Details:

Tavis Ormandy discovered multiple security issues in Ghostscript. If a user
or automated system were tricked into processing a specially crafted file,
a remote attacker could possibly use these issues 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 18.04 LTS:
  ghostscript                     9.22~dfsg+1-0ubuntu1.2
  libgs9                          9.22~dfsg+1-0ubuntu1.2

Ubuntu 16.04 LTS:
  ghostscript                     9.18~dfsg~0-0ubuntu2.9
  libgs9                          9.18~dfsg~0-0ubuntu2.9

Ubuntu 14.04 LTS:
  ghostscript                     9.10~dfsg-0ubuntu10.13
  libgs9                          9.10~dfsg-0ubuntu10.13

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3768-1
  CVE-2018-11645, CVE-2018-15908, CVE-2018-15909, CVE-2018-15910,
  CVE-2018-15911, CVE-2018-16509, CVE-2018-16510, CVE-2018-16511,
  CVE-2018-16513, CVE-2018-16539, CVE-2018-16540, CVE-2018-16541,
  CVE-2018-16542, CVE-2018-16543, CVE-2018-16585, CVE-2018-16802

Package Information:
  https://launchpad.net/ubuntu/+source/ghostscript/9.22~dfsg+1-0ubuntu1.2
  https://launchpad.net/ubuntu/+source/ghostscript/9.18~dfsg~0-0ubuntu2.9
  https://launchpad.net/ubuntu/+source/ghostscript/9.10~dfsg-0ubuntu10.13

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