From: Sune Kloppenborg Jeppesen (jaervoszgentoo.org)
Date: Wed May 11 2005 - 23:30:43 CDT

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Gentoo Linux Security Advisory GLSA 200505-09
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Gaim: Denial of Service and buffer overflow vulnerabilties
      Date: May 12, 2005
      Bugs: #91862
        ID: 200505-09

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Synopsis
========

Gaim contains two vulnerabilities, potentially resulting in the
execution of arbitrary code or Denial of Service.

Background
==========

Gaim is a full featured instant messaging client which handles a
variety of instant messaging protocols.

Affected packages
=================

    -------------------------------------------------------------------
     Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
  1 net-im/gaim < 1.3.0 >= 1.3.0

Description
===========

Stu Tomlinson discovered that Gaim is vulnerable to a remote stack
based buffer overflow when receiving messages in certain protocols,
like Jabber and SILC, with a very long URL (CAN-2005-1261). Siebe
Tolsma discovered that Gaim is also vulnerable to a remote Denial of
Service attack when receiving a specially crafted MSN message
(CAN-2005-1262).

Impact
======

A remote attacker could cause a buffer overflow by sending an instant
message with a very long URL, potentially leading to the execution of
malicious code. By sending a SLP message with an empty body, a remote
attacker could cause a Denial of Service or crash of the Gaim client.

Workaround
==========

There are no known workarounds at this time.

Resolution
==========

All Gaim users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-im/gaim-1.3.0"

References
==========

  [ 1 ] CAN-2005-1261
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1261
  [ 2 ] CAN-2005-1262
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1262

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200505-09.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
securitygentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0

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