====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: pidgin security update
Advisory ID:       RHSA-2009:1535-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2009:1535.html
Issue date:        2009-10-29
CVE Names:         CVE-2009-2703 CVE-2009-3083 CVE-2009-3615 
====================================================================
1. Summary:

An updated pidgin package that fixes several security issues is now
available for Red Hat Enterprise Linux 3.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Description:

Pidgin is an instant messaging program which can log in to multiple
accounts on multiple instant messaging networks simultaneously.

An invalid pointer dereference bug was found in the way the Pidgin OSCAR
protocol implementation processed lists of contacts. A remote attacker
could send a specially-crafted contact list to a user running Pidgin,
causing Pidgin to crash. (CVE-2009-3615)

A NULL pointer dereference flaw was found in the way the Pidgin IRC
protocol plug-in handles IRC topics. A malicious IRC server could send a
specially-crafted IRC TOPIC message, which once received by Pidgin, would
lead to a denial of service (Pidgin crash). (CVE-2009-2703)

A NULL pointer dereference flaw was found in the way the Pidgin MSN
protocol plug-in handles improper MSNSLP invitations. A remote attacker
could send a specially-crafted MSNSLP invitation request, which once
accepted by a valid Pidgin user, would lead to a denial of service (Pidgin
crash). (CVE-2009-3083)

All Pidgin users should upgrade to this updated package, which contains
backported patches to resolve these issues. Pidgin must be restarted for
this update to take effect.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at

5. Bugs fixed (http://bugzilla.redhat.com/):

521823 - CVE-2009-2703 Pidgin: NULL pointer dereference by handling IRC topic(s) (DoS)
521832 - CVE-2009-3083 Pidgin: NULL pointer dereference by processing incomplete MSN SLP invite (DoS)
529357 - CVE-2009-3615 Pidgin: Invalid pointer dereference (crash) after receiving contacts from SIM IM client

6. Package List:

Red Hat Enterprise Linux AS version 3:

Source:

i386:
pidgin-1.5.1-6.el3.i386.rpm
pidgin-debuginfo-1.5.1-6.el3.i386.rpm

ia64:
pidgin-1.5.1-6.el3.ia64.rpm
pidgin-debuginfo-1.5.1-6.el3.ia64.rpm

ppc:
pidgin-1.5.1-6.el3.ppc.rpm
pidgin-debuginfo-1.5.1-6.el3.ppc.rpm

s390:
pidgin-1.5.1-6.el3.s390.rpm
pidgin-debuginfo-1.5.1-6.el3.s390.rpm

s390x:
pidgin-1.5.1-6.el3.s390x.rpm
pidgin-debuginfo-1.5.1-6.el3.s390x.rpm

x86_64:
pidgin-1.5.1-6.el3.x86_64.rpm
pidgin-debuginfo-1.5.1-6.el3.x86_64.rpm

Red Hat Desktop version 3:

Source:

i386:
pidgin-1.5.1-6.el3.i386.rpm
pidgin-debuginfo-1.5.1-6.el3.i386.rpm

x86_64:
pidgin-1.5.1-6.el3.x86_64.rpm
pidgin-debuginfo-1.5.1-6.el3.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:

i386:
pidgin-1.5.1-6.el3.i386.rpm
pidgin-debuginfo-1.5.1-6.el3.i386.rpm

ia64:
pidgin-1.5.1-6.el3.ia64.rpm
pidgin-debuginfo-1.5.1-6.el3.ia64.rpm

x86_64:
pidgin-1.5.1-6.el3.x86_64.rpm
pidgin-debuginfo-1.5.1-6.el3.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:

i386:
pidgin-1.5.1-6.el3.i386.rpm
pidgin-debuginfo-1.5.1-6.el3.i386.rpm

ia64:
pidgin-1.5.1-6.el3.ia64.rpm
pidgin-debuginfo-1.5.1-6.el3.ia64.rpm

x86_64:
pidgin-1.5.1-6.el3.x86_64.rpm
pidgin-debuginfo-1.5.1-6.el3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2703
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3083
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3615
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is .  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2009 Red Hat, Inc.