Vulnerability Note VU#779614

Gaim contains an integer overflow vulnerability when parsing DirectIM packets

Overview

There is an integer overflow vulnerability in the handlehdr_odc() function, which could allow an unauthenticated, remote attacker to cause a denial of service or potentially execute arbitrary code.

I. Description

Gaim is a multi-protocol instant messenger client available for a number of operating systems. It supports a variety of instant messaging protocols, including the AIM/OSCAR protocol suite. There is an integer overflow vulnerability in the handlehdr_odc() function. This function fails to properly allocate memory when processing AIM/OSCAR DirectIM packets. By supplying a specially crafted value for the payloadlength variable, an unauthenticated, remote attacker could trigger a heap overflow.

II. Impact

An unauthenticated, remote attacker could cause a denial of service or potentially execute arbitrary code with the privileges of the vulnerable process.

III. Solution

Upgrade

Upgrade to Gaim version 0.75 or later.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Gaim	Vulnerable	10-May-2004

References

http://security.e-matters.de/advisories/012004.html
http://www.debian.org/security/2004/dsa-434
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000813
http://www.secunia.com/advisories/10705/

Credit

This vulnerability was publicly reported by Stefan Esser of e-matters.

This document was written by Damon Morda.

Other Information

Date Public:	2004-01-26
Date First Published:	2004-05-10
Date Last Updated:	2004-05-10
CERT Advisory:
CVE-ID(s):	CAN-2004-0008
NVD-ID(s):	CAN-2004-0008
US-CERT Technical Alerts:
Metric:	11.81
Document Revision:	10

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