Bug 1191087 (CVE-2014-9665)

Summary:	CVE-2014-9665 freetype: integer overflow leading to heap-based buffer overflow in Load_SBit_Png()
Product:	[Other] Security Response	Reporter:	Vasyl Kaigorodov <vkaigoro>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	behdad, fonts-bugs, kevin, mkasik
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	freetype 2.5.4	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-02-20 23:12:59 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:	1191099
Bug Blocks:	1191102

Description Vasyl Kaigorodov 2015-02-10 12:51:30 UTC

Common Vulnerabilities and Exposures assigned CVE-2014-9665 to the following issue:

The Load_SBit_Png function in sfnt/pngshim.c in FreeType before 2.5.4 does not
restrict the rows and pitch values of PNG data, which allows remote attackers to
cause a denial of service (integer overflow and heap-based buffer overflow) or
possibly have unspecified other impact by embedding a PNG file in a .ttf font
file.

http://code.google.com/p/google-security-research/issues/detail?id=168
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=54abd22891bd51ef8b533b24df53b3019b5cee81
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=b3500af717010137046ec4076d1e1c0641e33727

Comment 1 Vasyl Kaigorodov 2015-02-10 12:56:53 UTC

Created freetype tracking bugs for this issue:

Affects: fedora-all [bug 1191099]

Comment 2 Fedora Update System 2015-02-19 18:00:56 UTC

freetype-2.5.3-15.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2015-02-20 08:30:53 UTC

freetype-2.5.0-9.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Tomas Hoger 2015-02-20 23:12:59 UTC

Upstream bug is:
https://savannah.nongnu.org/bugs/?43658

Issue was fixed upstream in 2.5.4.

Support for bitmaps embedded in SFNT fonts was introduced in upstream version 2.5.  Additionally, the affected code was added in 2.5.1 via:

http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=01705395

The freetype packages in Red Hat Enterprise Linux 7 and earlier are based on older unaffected upstream versions.

Statement:

Not vulnerable. This issue did not affect the versions of freetype as shipped with Red Hat Enterprise Linux 5, 6 and 7.