Bug 290991 (CVE-2007-5137)

Summary:	CVE-2007-5137 Tk GIF processing buffer overflow
Product:	[Other] Security Response	Reporter:	Josh Bressers <bressers>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	kreilly, mmaslano
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:	2008-02-22 08:52:59 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:	332061, 332071, 432514, 432515, 833985
Bug Blocks:

Description Josh Bressers 2007-09-14 15:16:04 UTC

Reinhard Max discovered a buffer overflow flaw in the way Tk's GIF processor
handles an interlaced GIF with two frames.  It is possible to overflow a buffer
if the second frame is smaller than the first.

The fix can be found here:
http://tktoolkit.cvs.sourceforge.net/tktoolkit/tk/generic/tkImgGIF.c?r1=1.36&r2=1.37

Comment 1 Josh Bressers 2007-09-14 15:23:00 UTC

I've searched the RHEL codebase for the tk code that uses the -index option with
GIF images.  I couldn't find any.  Thomas Biege from Suse says this is an
undocumented feature of Tk.  We are assigning this flaw with low severity.

Comment 2 Marcela Mašláňová 2007-09-17 07:46:39 UTC

Fixed in devel.

If fix is needed for other version, please open the bug.

Comment 3 Tomas Hoger 2007-10-09 06:40:27 UTC

Original CVE id CVE-2007-4851 was rejected as duplicate of CVE-2007-5137:

Buffer overflow in the ReadImage function in generic/tkImgGIF.c in Tcl (Tcl/Tk)
before 8.4.16 allows remote attackers to execute arbitrary code via multi-frame
interlaced GIF files in which later frames are smaller than the first.

References:
http://secunia.com/advisories/26942
http://sourceforge.net/project/shownotes.php?release_id=541207
http://www.securityfocus.com/bid/25826


Marcela, please update RPM changelog when doing next update of tk in Fedora, as
original CVE id was used there.  Thanks!

Comment 4 Tomas Hoger 2007-10-15 11:57:04 UTC

Further analysis by Jamie Strandboge yielded following results:

This issue was introduced by fix for SF.net bug report:

https://sourceforge.net/tracker/?func=detail&atid=112997&aid=1458234&group_id=12997

Issue only affects tk 8.4.13 - 8.4.15.

Affected versions are shipped in Red Hat Enterprise Linux 5, Fedora Core 6 and
Fedora 7.

Comment 9 Red Hat Product Security 2008-02-22 08:52:59 UTC

This issue was addressed in:

Red Hat Enterprise Linux:
  http://rhn.redhat.com/errata/RHSA-2008-0136.html

Fedora:
  https://admin.fedoraproject.org/updates/F7/FEDORA-2007-2564