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Bug 1382300 - (CVE-2016-7978) CVE-2016-7978 ghostscript: reference leak in .setdevice allows use-after-free and remote code execution
CVE-2016-7978 ghostscript: reference leak in .setdevice allows use-after-free...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20160930,repor...
: Security
Depends On: 1390299 1390300 1390488
Blocks: 1380329
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Reported: 2016-10-06 05:44 EDT by Cedric Buissart
Modified: 2017-01-04 06:10 EST (History)
11 users (show)

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Doc Text:
It was found that the ghostscript function .setdevice suffered a use-after-free vulnerability due to an incorrect reference count. A specially crafted postscript document could trigger code execution in the context of the gs process.
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Last Closed: 2017-01-04 06:10:39 EST
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:0013 normal SHIPPED_LIVE Moderate: ghostscript security update 2017-01-04 10:09:56 EST

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Description Cedric Buissart 2016-10-06 05:44:43 EDT 
An incorrect reference count was found in .setdevice. This leads to a use-after-free, triggering a Denial of Service, or possibly, arbitrary code execution.

Upstream bug :
 - Bug 697179 - double free with .setdevice
http://bugs.ghostscript.com/show_bug.cgi?id=697179

upstream fix :
 - Bug 697179: Reference count device icc profile when copying a device
http://git.ghostscript.com/?p=user/chrisl/ghostpdl.git;a=commitdiff;h=d5ad1e02

Reference :
http://seclists.org/oss-sec/2016/q4/37
Comment 4 Cedric Buissart 2016-10-31 12:00:45 EDT 
Ghostscript's ICC profile management is a feature that started with version 9.
Thus previous versions, in particular ghostscript 8.70, do not have capability to open ICC profile files for color management, and thus are not affected by this CVE.
RHEL5 and 6 are not affected by this issue.
Comment 6 Cedric Buissart 2016-11-01 04:42:38 EDT 
Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1390488]
Comment 7 errata-xmlrpc 2017-01-04 05:11:38 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:0013 https://rhn.redhat.com/errata/RHSA-2017-0013.html
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