Bug 742450

Summary: pidgin: Heap-based buffer overflow by processing certain SILC private messages
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED DUPLICATE QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: daniel_atallah, deryni, eblanton, fedora, itamar, jrb, lschiere+bugs, mark, mbarnes, nobody, stu, vdanen
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2011-10-05 05:08:34 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 742457    
Bug Blocks: 742574    

Description Jan Lieskovsky 2011-09-30 07:57:53 UTC 
Pidgin is a Gtk+ based multiprotocol instant messaging client. The SILC Purple plug-in allows Pidgin to use the Secure Internet Live Conferencing (SILC) protocol.

A heap-based buffer overflow flaw was found in the way the SILC Purple Pidgin protocol plug-in escaped certain UTF-8 private messages. If a Pidgin client received a specially-crafted SILC message, it could cause Pidgin to crash, or, potentially lead to arbitrary code execution with the privileges of the user running Pidgin.

References:
[1] http://developer.pidgin.im/ticket/14636
Comment 1 Jan Lieskovsky 2011-09-30 07:59:36 UTC 
This issue affects the versions of the pidgin package, as shipped with Red Hat Enterprise Linux 4 and 5.

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This issue did NOT affect the version of the pidgin package, as shipped with Red Hat Enterprise Linux 6 since the Pidgin SILC plug-in has been disabled there.

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This issue affects the versions of the pidgin package, as shipped with Fedora release of 14 and 15.
Comment 4 Jan Lieskovsky 2011-09-30 08:17:00 UTC 
Created pidgin tracking bugs for this issue

Affects: fedora-all [bug 742457]
Comment 8 Huzaifa S. Sidhpurwala 2011-10-05 05:08:34 UTC 

*** This bug has been marked as a duplicate of bug 743481 ***
Comment 9 Fedora Update System 2012-01-05 20:55:07 UTC 
pidgin-2.10.1-1.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2012-01-07 22:59:24 UTC 
pidgin-2.10.1-1.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.