Bug 714754

Summary: pidgin: DoS (excessive memory consumption) by processing certain GIF images used as buddy icon
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED DUPLICATE QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: jrb, mbarnes, security-response-team
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: 2012-07-04 08:49:26 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: 716377    
Bug Blocks: 714770    

Description Jan Lieskovsky 2011-06-20 15:36:36 UTC 
The following security flaw has been found in the way gdk-pixbuf, an image
loading library, loaded certain Graphics Interchange Format (GIF) image files:
==============================================================================

It was found that gdk-pixbuf GIF image loader gdk_pixbuf__gif_image_load()
routine did not properly handle certain return values from its subroutines.
A remote attacker could provide a specially-crafted GIF image, which once
opened in an application, linked against gdk-pixbuf would lead to gdk-pixbuf
to return partially initialized pixbuf structure, possibly having huge
width and height, leading to that particular application termination due
excessive memory use.

References:

[1] https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2485
[2] http://git.gnome.org/browse/gdk-pixbuf/commit/?id=f8569bb13e2aa1584dde61ca545144750f7a7c98

For Pidgin the above gdk-pixbuf library deficiency would mean:
==============================================================

A remote attacker could set a specially-crafted GIF image as their buddy icon that could lead to Pidgin being terminated due to excessive memory use.

References:
[3] http://www.pidgin.im/news/security/?id=52

Acknowledgements:

Red Hat would like to thank the Pidgin project for reporting this issue.
Upstream acknowledges Mark Doliner as the original reporter.
Comment 1 Jan Lieskovsky 2011-06-20 15:42:50 UTC 
This issue affects the versions of the pidgin package, as shipped with
Red Hat Enterprise Linux 4, 5, and 6.

--

This issue affects the versions of the pidgin package, as shipped with
Fedora release of 13, 14, and 15.
Comment 7 Jan Lieskovsky 2011-06-24 08:51:32 UTC 
Created pidgin tracking bugs for this issue

Affects: fedora-all [bug 716377]
Comment 8 Jan Lieskovsky 2011-06-24 09:20:06 UTC 
Relevant upstream patch:
[4] http://developer.pidgin.im/viewmtn/revision/info/e802003adbf0be4496de3de8ac03b47c1e471d00
Comment 9 Huzaifa S. Sidhpurwala 2012-07-04 08:49:26 UTC 

*** This bug has been marked as a duplicate of bug 715337 ***