Bug 521832 (CVE-2009-3083)

Summary:	CVE-2009-3083 Pidgin: NULL pointer dereference by processing incomplete MSN SLP invite (DoS)
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
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, mjc, wtogami
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://pidgin.im/news/security/?id=39
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-03-29 09:11:29 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:	522536, 522537, 522538, 522539, 529416, 833962
Bug Blocks:

Description Jan Lieskovsky 2009-09-08 13:40:23 UTC

A NULL pointer dereference flaw was found in the Pidgin MSN protocol plugin,
by processing SLP invitation(s). A remote attacker could
issue a specially-crafted SLP invitation request, which once accepted
by valid Pidgin user, would lead to denial of service (Pidgin crash).

References:
----------
http://pidgin.im/news/security/?id=39
http://developer.pidgin.im/ticket/10159

Upstream patch:
--------------
http://developer.pidgin.im/viewmtn/revision/info/b4a95ea62b81a06ffc1993912471c511b786efdd

Credit:
-------
blackstar in ticket #10159 and Elliott Sales de Andrade

Comment 1 Jan Lieskovsky 2009-09-08 13:41:01 UTC

This issue affects the versions of Pidgin package, as shipped
with Red Hat Enterprise Linux 3, 4, and 5. 

This issue was already addressed in the versions of Pidgin
package, as shipped with Fedora 10 and 11. Relevant versions:

Fedora 10: pidgin-2.6.2-1.fc10.1
Fedora 11: pidgin-2.6.2-1.fc11

Comment 3 Jan Lieskovsky 2009-09-09 15:33:14 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2009-3083 to
the following vulnerability:

The msn_slp_sip_recv function in libpurple/protocols/msn/slp.c in the
MSN protocol plugin in libpurple in Pidgin before 2.6.2 allows remote
attackers to cause a denial of service (NULL pointer dereference and
application crash) via an SLP invite message that lacks certain
required fields, as demonstrated by a malformed message from a KMess
client.

References:
-----------
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3083
http://developer.pidgin.im/ticket/10159
http://developer.pidgin.im/viewmtn/revision/diff/6d3fc30a0a0a379281efc5a6872a9c1d7c24c650
http://developer.pidgin.im/viewmtn/revision/info/b4a95ea62b81a06ffc1993912471c511b786efdd
http://www.pidgin.im/news/security/index.php?id=39
http://www.securityfocus.com/bid/36277
http://secunia.com/advisories/36601

Comment 7 errata-xmlrpc 2009-09-21 15:46:24 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 4
  Red Hat Enterprise Linux 5

Via RHSA-2009:1453 https://rhn.redhat.com/errata/RHSA-2009-1453.html

Comment 8 errata-xmlrpc 2009-10-29 14:20:38 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 3

Via RHSA-2009:1535 https://rhn.redhat.com/errata/RHSA-2009-1535.html