ghostscript: Denial of Service -- Remote with User Interaction

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2149
                        Ghostscript vulnerabilities
                              29 August 2017

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

Product:           ghostscript
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-11714 CVE-2017-9835 CVE-2017-9739
                   CVE-2017-9727 CVE-2017-9726 CVE-2017-9612
                   CVE-2017-9611  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3403-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running ghostscript check for an updated version of the software for
         their operating system.

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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:
9.19~dfsg+1-0ubuntu7.6
9.19~dfsg+1-0ubuntu7.6
9.19~dfsg+1-0ubuntu7.6
9.19~dfsg+1-0ubuntu7.6

Ubuntu 16.04 LTS:
9.18~dfsg~0-0ubuntu2.7
9.18~dfsg~0-0ubuntu2.7
9.18~dfsg~0-0ubuntu2.7
9.18~dfsg~0-0ubuntu2.7

Ubuntu 14.04 LTS:
9.10~dfsg-0ubuntu10.10
9.10~dfsg-0ubuntu10.10
9.10~dfsg-0ubuntu10.10
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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