Bug 1388816 (CVE-2016-8866)

Summary:	CVE-2016-8866 ImageMagick: Memory allocation failure in AcquireMagickMemory (incomplete fix for CVE-2016-8862)
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, dmcphers, ethan, jhorak, jialiu, jokerman, kseifried, lmeyer, mmccomas, nmurray, pahan, sardella, slawomir, tiwillia
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-11-21 05:25:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	1381145
Bug Blocks:	1381146

Description Andrej Nemec 2016-10-26 08:44:14 UTC

It was discovered that the upstream fix for this issue was not complete. There is still a memory allocation failure in memory.c

References:

http://seclists.org/oss-sec/2016/q4/197
https://blogs.gentoo.org/ago/2016/10/20/imagemagick-memory-allocation-failure-in-acquiremagickmemory-memory-c-incomplete-fix-for-cve-2016-8862/

Comment 1 Andrej Nemec 2016-10-26 08:47:47 UTC

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1381145]

Comment 2 Huzaifa S. Sidhpurwala 2017-01-20 08:44:16 UTC

Upstream patch:

https://github.com/ImageMagick/ImageMagick/commit/ab2c9d6a8dd6d71b161ec9cc57a588b116b52322

Analysis:

Basically lowers map_length from 32 (fix for CVE-2016-8862) to the new value 22. Even without the previous fix, this flaw affects ImageMagick shipped with Red Hat Enterprise Linux, hence marking as affected.