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Gentoo Linux Security Advisory 200505-9

Gentoo Linux Security Advisory 200505-9
Posted Jul 2, 2005
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200505-09 - 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 (CVE-2005-1261). Siebe Tolsma discovered that Gaim is also vulnerable to a remote Denial of Service attack when receiving a specially crafted MSN message (CVE-2005-1262). Versions less than 1.3.0 are affected.

tags | advisory, remote, denial of service, overflow, protocol
systems | linux, gentoo
advisories | CVE-2005-1261, CVE-2005-1262
SHA-256 | 52d6d35d922abc92a5c62a156c06b0a964358c9c04b130bca8c8ab047e64a971

Gentoo Linux Security Advisory 200505-9

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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
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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