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Category:   Application (Instant Messaging/IRC/Chat)  >   Gaim Vendors:   Gaim.sourceforge.net
(Gentoo Issues Fix) Gaim SNAC Packet Parsing Error Lets Remote Users Deny Service
SecurityTracker Alert ID:  1013348
SecurityTracker URL:  http://securitytracker.com/id/1013348
CVE Reference:   CVE-2005-0472   (Links to External Site)
Date:  Mar 2 2005
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.1.3
Description:   A denial of service vulnerability was reported in Gaim in the processing of SNAC packets. A remote user can cause the target client to freeze.

A remote AIM or ICQ user can send specially crafted SNAC packets to the target user to cause the target user's Gaim client to enter an infinite loop. The standard AIM and ICQ clients cannot create these packets. Instead, a custom client is required to exploit this flaw.

Impact:   A remote user can cause the target user's Gaim client to freeze.
Solution:   Gentoo has released a fix and indicates that all Gaim users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/gaim-1.1.4"

Vendor URL:  gaim.sourceforge.net/security/?id=10 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Feb 18 2005 Gaim SNAC Packet Parsing Error Lets Remote Users Deny Service



 Source Message Contents

Subject:  [gentoo-announce] [ GLSA 200503-03 ] Gaim: Multiple Denial of Service issues


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Gentoo Linux Security Advisory                           GLSA 200503-03
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Gaim: Multiple Denial of Service issues
      Date: March 01, 2005
      Bugs: #83253
        ID: 200503-03

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Synopsis
========

Multiple vulnerabilities have been found in Gaim which could allow a
remote attacker to crash the application.

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       < 1.1.4                                >= 1.1.4

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

Specially crafted SNAC packets sent by other instant-messaging users
can cause Gaim to loop endlessly (CAN-2005-0472). Malformed HTML code
could lead to invalid memory accesses (CAN-2005-0208 and
CAN-2005-0473).

Impact
======

Remote attackers could exploit these issues, resulting in a Denial of
Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Gaim users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-im/gaim-1.1.4"

References
==========

  [ 1 ] CAN-2005-0208
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0208
  [ 2 ] CAN-2005-0472
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0472
  [ 3 ] CAN-2005-0473
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0473

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

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

  http://security.gentoo.org/glsa/glsa-200503-03.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
security@gentoo.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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