Bug 1389338 (CVE-2016-9085)

Summary:	CVE-2016-9085 libwebp: Several integer overflows
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abhgupta, ccoleman, dedgar, dmcphers, jgoulding, jialiu, joelsmith, jokerman, lmeyer, mmccomas, sardella, stransky, tiwillia, tuxator
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libwebp 0.5.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-07-15 01:27:36 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1389339, 1389340, 1389341, 1389343, 1389345, 1857003
Bug Blocks:	1856607

Description Adam Mariš 2016-10-27 13:18:08 UTC

Multiple integer overflows were found in libwebp library.

Upstream patch:

https://chromium.googlesource.com/webm/libwebp/+/e2affacc35f1df6cc3b1a9fa0ceff5ce2d0cce83

CVE assignment:

http://seclists.org/oss-sec/2016/q4/253

Comment 2 Adam Mariš 2016-10-27 13:19:24 UTC

Created libwebp tracking bugs for this issue:

Affects: fedora-all [bug 1389340]
Affects: epel-6 [bug 1389343]

Comment 3 Adam Mariš 2016-10-27 13:19:34 UTC

Created mingw-libwebp tracking bugs for this issue:

Affects: fedora-all [bug 1389341]
Affects: epel-6 [bug 1389345]

Comment 4 Todd Cullum 2020-07-14 22:27:56 UTC

Flaw Summary:
libwebp includes an example program called gifdec.c which uses pointer arithmetic computations with integers. The affected routines are GIFReadFrame(), ClearRectangle(), and GIFBlendFrames(). The upstream patch uses wider size_t containers instead of integers in the calculations and also uses pointer increments in an attempt to avoid these integer overflows.

Versions of libwebp shipped with Red Hat Enterprise Linux 8 are affected but versions of libwebp shipped with all previous versions of Red Hat Enterprise Linux are not affected since the vulnerable code does not exist in those versions.

Comment 7 Todd Cullum 2020-07-14 22:41:26 UTC

Correction: the 1.0.0 version of libwebp shipped with Red Hat Enterprise Linux 8 is NOT affected as it includes the patch for this already.

Comment 8 Product Security DevOps Team 2020-07-15 01:27:36 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2016-9085