Bug 1383940 – CVE-2016-8602 ghostscript: check for sufficient params in .sethalftone5

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Bug 1383940 - (CVE-2016-8602) CVE-2016-8602 ghostscript: check for sufficient params in .sethalftone5

Summary:	CVE-2016-8602 ghostscript: check for sufficient params in .sethalftone5

Status:	CLOSED ERRATA

Aliases:	CVE-2016-8602

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20161008,repor...
Keywords:	Security

Depends On:	1383941 1390299 1390300 1390301 1390302
Blocks:	1380329
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Reported:	2016-10-12 04:18 EDT by Cedric Buissart
Modified:	2017-01-04 06:11 EST (History)
CC List:	13 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	It was found that ghostscript did not sufficiently check the validity of parameters given to the .sethalftone5 function. A specially crafted postscript document could cause a crash, or execute arbitrary code in the context of the gs process.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-01-04 06:11:17 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

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
Red Hat Product Errata	RHSA-2017:0014	normal	SHIPPED_LIVE	Moderate: ghostscript security update	2017-01-04 10:09:47 EST

Groups: None (edit)

Description Cedric Buissart 2016-10-12 04:18:13 EDT

If you call .sethalftone5 with an empty operand stack, ghostscript crashes. This flaw could be exploitable

Upstream bug :
 - Bug 697203 - NULL dereference in .sethalftone5
http://bugs.ghostscript.com/show_bug.cgi?id=697203

Upstream patch :
 - Bug 697203: check for sufficient params in .sethalftone5
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=f5c7555c303

Reference :
http://seclists.org/oss-sec/2016/q4/98

Comment 1 Cedric Buissart 2016-10-12 04:19:06 EDT

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1383941]

Comment 7 errata-xmlrpc 2017-01-04 05:10:40 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0014 https://rhn.redhat.com/errata/RHSA-2017-0014.html

Comment 8 errata-xmlrpc 2017-01-04 05:11:57 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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