Bug 1086514 (CVE-2013-7353)

Summary: CVE-2013-7353 libpng: integer overflow leading to a heap-based buffer overflow in png_set_unknown_chunks()
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: drizt72, erik-fedora, fedora-mingw, jkoncick, jkurik, ktietz, lfarkas, paul, pfrields, phracek, rdieter, rjones
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-04-21 09:03:58 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: 1086669, 1086670, 1086671, 1086672, 1086673, 1086674    
Bug Blocks: 1086521    

Description Huzaifa S. Sidhpurwala 2014-04-11 03:53:57 UTC
An integer overflow leading to a heap-based buffer overflow was found in the png_set_unknown_chunks() API function of libpng. A attacker could create a specially-crafated image file and render it with an application written to explicitly call png_set_unknown_chunks() function, could cause libpng to crash or execute arbitrary code with the permissions of the user running such an application.

The vendor mentions that internal calls use safe values. These issues could potentially affect applications that use the libpng API. Apparently no such applications were identified.

Reference:

http://sourceforge.net/p/libpng/bugs/199/
http://seclists.org/oss-sec/2014/q2/83

Comment 1 Huzaifa S. Sidhpurwala 2014-04-11 09:15:24 UTC
This issue was addressed by the following upstream commit:

http://sourceforge.net/p/libpng/code/ci/9dd2bfafe50de0e3204be81a90303760d26a697c

and was later enhanced by the following commit:

http://sourceforge.net/p/libpng/code/ci/2414bd99d8c76f92ca9272f1b1b1eff55709298a

Upstream released libpng-1.6.0 and libpng-1.5.14 to address this issue.

Comment 3 Huzaifa S. Sidhpurwala 2014-04-11 09:47:28 UTC
Created libpng tracking bugs for this issue:

Affects: fedora-19 [bug 1086669]

Comment 4 Huzaifa S. Sidhpurwala 2014-04-11 09:47:33 UTC
Created libpng10 tracking bugs for this issue:

Affects: epel-6 [bug 1086673]

Comment 5 Huzaifa S. Sidhpurwala 2014-04-11 09:47:37 UTC
Created libpng15 tracking bugs for this issue:

Affects: fedora-20 [bug 1086670]

Comment 6 Huzaifa S. Sidhpurwala 2014-04-11 09:47:42 UTC
Created mingw-libpng tracking bugs for this issue:

Affects: fedora-19 [bug 1086671]

Comment 7 Huzaifa S. Sidhpurwala 2014-04-11 09:47:46 UTC
Created mingw32-libpng tracking bugs for this issue:

Affects: epel-5 [bug 1086672]
Affects: epel-6 [bug 1086674]

Comment 8 Huzaifa S. Sidhpurwala 2014-04-21 07:54:24 UTC
Statement:

Not vulnerable. This issue does not affect the version of libpng as shipped with Red Hat Enterprise Linux 5 and 6.