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

Synopsis:          Moderate: pidgin security update
Advisory ID:       RHSA-2011:1371-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-1371.html
Issue date:        2011-10-13
CVE Names:         CVE-2011-1091 CVE-2011-3594 
=====================================================================

1. Summary:

Updated pidgin packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 4 and 5.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
RHEL Optional Productivity Applications (v. 5 server) - i386, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - 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 input sanitization flaw was found in the way the Pidgin SILC (Secure
Internet Live Conferencing) protocol plug-in escaped certain UTF-8
characters. A remote attacker could use this flaw to crash Pidgin via a
specially-crafted SILC message. (CVE-2011-3594)

Multiple NULL pointer dereference flaws were found in the way the Pidgin
Yahoo! Messenger Protocol plug-in handled malformed YMSG packets. A remote
attacker could use these flaws to crash Pidgin via a specially-crafted
notification message. (CVE-2011-1091)

Red Hat would like to thank the Pidgin project for reporting CVE-2011-1091.
Upstream acknowledges Marius Wachtler as the original reporter of
CVE-2011-1091.

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

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

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

683031 - CVE-2011-1091 Pidgin: Multiple NULL pointer dereference flaws in Yahoo protocol plug-in
743481 - CVE-2011-3594 libpurple: invalid UTF-8 string handling in SILC messages

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/pidgin-2.6.6-7.el4.src.rpm

i386:
finch-2.6.6-7.el4.i386.rpm
finch-devel-2.6.6-7.el4.i386.rpm
libpurple-2.6.6-7.el4.i386.rpm
libpurple-devel-2.6.6-7.el4.i386.rpm
libpurple-perl-2.6.6-7.el4.i386.rpm
libpurple-tcl-2.6.6-7.el4.i386.rpm
pidgin-2.6.6-7.el4.i386.rpm
pidgin-debuginfo-2.6.6-7.el4.i386.rpm
pidgin-devel-2.6.6-7.el4.i386.rpm
pidgin-perl-2.6.6-7.el4.i386.rpm

ia64:
finch-2.6.6-7.el4.ia64.rpm
finch-devel-2.6.6-7.el4.ia64.rpm
libpurple-2.6.6-7.el4.ia64.rpm
libpurple-devel-2.6.6-7.el4.ia64.rpm
libpurple-perl-2.6.6-7.el4.ia64.rpm
libpurple-tcl-2.6.6-7.el4.ia64.rpm
pidgin-2.6.6-7.el4.ia64.rpm
pidgin-debuginfo-2.6.6-7.el4.ia64.rpm
pidgin-devel-2.6.6-7.el4.ia64.rpm
pidgin-perl-2.6.6-7.el4.ia64.rpm

ppc:
finch-2.6.6-7.el4.ppc.rpm
finch-devel-2.6.6-7.el4.ppc.rpm
libpurple-2.6.6-7.el4.ppc.rpm
libpurple-devel-2.6.6-7.el4.ppc.rpm
libpurple-perl-2.6.6-7.el4.ppc.rpm
libpurple-tcl-2.6.6-7.el4.ppc.rpm
pidgin-2.6.6-7.el4.ppc.rpm
pidgin-debuginfo-2.6.6-7.el4.ppc.rpm
pidgin-devel-2.6.6-7.el4.ppc.rpm
pidgin-perl-2.6.6-7.el4.ppc.rpm

x86_64:
finch-2.6.6-7.el4.x86_64.rpm
finch-devel-2.6.6-7.el4.x86_64.rpm
libpurple-2.6.6-7.el4.x86_64.rpm
libpurple-devel-2.6.6-7.el4.x86_64.rpm
libpurple-perl-2.6.6-7.el4.x86_64.rpm
libpurple-tcl-2.6.6-7.el4.x86_64.rpm
pidgin-2.6.6-7.el4.x86_64.rpm
pidgin-debuginfo-2.6.6-7.el4.x86_64.rpm
pidgin-devel-2.6.6-7.el4.x86_64.rpm
pidgin-perl-2.6.6-7.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/pidgin-2.6.6-7.el4.src.rpm

i386:
finch-2.6.6-7.el4.i386.rpm
finch-devel-2.6.6-7.el4.i386.rpm
libpurple-2.6.6-7.el4.i386.rpm
libpurple-devel-2.6.6-7.el4.i386.rpm
libpurple-perl-2.6.6-7.el4.i386.rpm
libpurple-tcl-2.6.6-7.el4.i386.rpm
pidgin-2.6.6-7.el4.i386.rpm
pidgin-debuginfo-2.6.6-7.el4.i386.rpm
pidgin-devel-2.6.6-7.el4.i386.rpm
pidgin-perl-2.6.6-7.el4.i386.rpm

x86_64:
finch-2.6.6-7.el4.x86_64.rpm
finch-devel-2.6.6-7.el4.x86_64.rpm
libpurple-2.6.6-7.el4.x86_64.rpm
libpurple-devel-2.6.6-7.el4.x86_64.rpm
libpurple-perl-2.6.6-7.el4.x86_64.rpm
libpurple-tcl-2.6.6-7.el4.x86_64.rpm
pidgin-2.6.6-7.el4.x86_64.rpm
pidgin-debuginfo-2.6.6-7.el4.x86_64.rpm
pidgin-devel-2.6.6-7.el4.x86_64.rpm
pidgin-perl-2.6.6-7.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/pidgin-2.6.6-7.el4.src.rpm

i386:
finch-2.6.6-7.el4.i386.rpm
finch-devel-2.6.6-7.el4.i386.rpm
libpurple-2.6.6-7.el4.i386.rpm
libpurple-devel-2.6.6-7.el4.i386.rpm
libpurple-perl-2.6.6-7.el4.i386.rpm
libpurple-tcl-2.6.6-7.el4.i386.rpm
pidgin-2.6.6-7.el4.i386.rpm
pidgin-debuginfo-2.6.6-7.el4.i386.rpm
pidgin-devel-2.6.6-7.el4.i386.rpm
pidgin-perl-2.6.6-7.el4.i386.rpm

ia64:
finch-2.6.6-7.el4.ia64.rpm
finch-devel-2.6.6-7.el4.ia64.rpm
libpurple-2.6.6-7.el4.ia64.rpm
libpurple-devel-2.6.6-7.el4.ia64.rpm
libpurple-perl-2.6.6-7.el4.ia64.rpm
libpurple-tcl-2.6.6-7.el4.ia64.rpm
pidgin-2.6.6-7.el4.ia64.rpm
pidgin-debuginfo-2.6.6-7.el4.ia64.rpm
pidgin-devel-2.6.6-7.el4.ia64.rpm
pidgin-perl-2.6.6-7.el4.ia64.rpm

x86_64:
finch-2.6.6-7.el4.x86_64.rpm
finch-devel-2.6.6-7.el4.x86_64.rpm
libpurple-2.6.6-7.el4.x86_64.rpm
libpurple-devel-2.6.6-7.el4.x86_64.rpm
libpurple-perl-2.6.6-7.el4.x86_64.rpm
libpurple-tcl-2.6.6-7.el4.x86_64.rpm
pidgin-2.6.6-7.el4.x86_64.rpm
pidgin-debuginfo-2.6.6-7.el4.x86_64.rpm
pidgin-devel-2.6.6-7.el4.x86_64.rpm
pidgin-perl-2.6.6-7.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/pidgin-2.6.6-7.el4.src.rpm

i386:
finch-2.6.6-7.el4.i386.rpm
finch-devel-2.6.6-7.el4.i386.rpm
libpurple-2.6.6-7.el4.i386.rpm
libpurple-devel-2.6.6-7.el4.i386.rpm
libpurple-perl-2.6.6-7.el4.i386.rpm
libpurple-tcl-2.6.6-7.el4.i386.rpm
pidgin-2.6.6-7.el4.i386.rpm
pidgin-debuginfo-2.6.6-7.el4.i386.rpm
pidgin-devel-2.6.6-7.el4.i386.rpm
pidgin-perl-2.6.6-7.el4.i386.rpm

ia64:
finch-2.6.6-7.el4.ia64.rpm
finch-devel-2.6.6-7.el4.ia64.rpm
libpurple-2.6.6-7.el4.ia64.rpm
libpurple-devel-2.6.6-7.el4.ia64.rpm
libpurple-perl-2.6.6-7.el4.ia64.rpm
libpurple-tcl-2.6.6-7.el4.ia64.rpm
pidgin-2.6.6-7.el4.ia64.rpm
pidgin-debuginfo-2.6.6-7.el4.ia64.rpm
pidgin-devel-2.6.6-7.el4.ia64.rpm
pidgin-perl-2.6.6-7.el4.ia64.rpm

x86_64:
finch-2.6.6-7.el4.x86_64.rpm
finch-devel-2.6.6-7.el4.x86_64.rpm
libpurple-2.6.6-7.el4.x86_64.rpm
libpurple-devel-2.6.6-7.el4.x86_64.rpm
libpurple-perl-2.6.6-7.el4.x86_64.rpm
libpurple-tcl-2.6.6-7.el4.x86_64.rpm
pidgin-2.6.6-7.el4.x86_64.rpm
pidgin-debuginfo-2.6.6-7.el4.x86_64.rpm
pidgin-devel-2.6.6-7.el4.x86_64.rpm
pidgin-perl-2.6.6-7.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/pidgin-2.6.6-5.el5_7.1.src.rpm

i386:
finch-2.6.6-5.el5_7.1.i386.rpm
libpurple-2.6.6-5.el5_7.1.i386.rpm
libpurple-perl-2.6.6-5.el5_7.1.i386.rpm
libpurple-tcl-2.6.6-5.el5_7.1.i386.rpm
pidgin-2.6.6-5.el5_7.1.i386.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.i386.rpm
pidgin-perl-2.6.6-5.el5_7.1.i386.rpm

x86_64:
finch-2.6.6-5.el5_7.1.i386.rpm
finch-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-2.6.6-5.el5_7.1.i386.rpm
libpurple-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-perl-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-tcl-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-2.6.6-5.el5_7.1.i386.rpm
pidgin-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.i386.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-perl-2.6.6-5.el5_7.1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/pidgin-2.6.6-5.el5_7.1.src.rpm

i386:
finch-devel-2.6.6-5.el5_7.1.i386.rpm
libpurple-devel-2.6.6-5.el5_7.1.i386.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.i386.rpm
pidgin-devel-2.6.6-5.el5_7.1.i386.rpm

x86_64:
finch-devel-2.6.6-5.el5_7.1.i386.rpm
finch-devel-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-devel-2.6.6-5.el5_7.1.i386.rpm
libpurple-devel-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.i386.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-devel-2.6.6-5.el5_7.1.i386.rpm
pidgin-devel-2.6.6-5.el5_7.1.x86_64.rpm

RHEL Optional Productivity Applications (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/pidgin-2.6.6-5.el5_7.1.src.rpm

i386:
finch-2.6.6-5.el5_7.1.i386.rpm
finch-devel-2.6.6-5.el5_7.1.i386.rpm
libpurple-2.6.6-5.el5_7.1.i386.rpm
libpurple-devel-2.6.6-5.el5_7.1.i386.rpm
libpurple-perl-2.6.6-5.el5_7.1.i386.rpm
libpurple-tcl-2.6.6-5.el5_7.1.i386.rpm
pidgin-2.6.6-5.el5_7.1.i386.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.i386.rpm
pidgin-devel-2.6.6-5.el5_7.1.i386.rpm
pidgin-perl-2.6.6-5.el5_7.1.i386.rpm

x86_64:
finch-2.6.6-5.el5_7.1.i386.rpm
finch-2.6.6-5.el5_7.1.x86_64.rpm
finch-devel-2.6.6-5.el5_7.1.i386.rpm
finch-devel-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-2.6.6-5.el5_7.1.i386.rpm
libpurple-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-devel-2.6.6-5.el5_7.1.i386.rpm
libpurple-devel-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-perl-2.6.6-5.el5_7.1.x86_64.rpm
libpurple-tcl-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-2.6.6-5.el5_7.1.i386.rpm
pidgin-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.i386.rpm
pidgin-debuginfo-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-devel-2.6.6-5.el5_7.1.i386.rpm
pidgin-devel-2.6.6-5.el5_7.1.x86_64.rpm
pidgin-perl-2.6.6-5.el5_7.1.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-1091.html
https://www.redhat.com/security/data/cve/CVE-2011-3594.html
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2011 Red Hat, Inc.
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