Gaim contains a buffer overflow vulnerability in the yahoo_decode() function

Overview

There is a buffer overflow vulnerability in the Gaim yahoo_decode() function, which could cause a pointer to reference memory beyond the terminating null byte.

Description

Gaim is a multi-protocol instant messenger available for a number of operating systems. It supports a variety of instant messaging protocols, including the Yahoo Messenger (YMSG) protocol. There is a buffer overflow vulnerability in the yahoo_decode() function. This function fails to properly allocate memory for octal values, which could result in a pointer referencing a memory location beyond the terminating null byte.

Impact

An unauthenticated, remote attacker may cause a denial of service or potentially execute code of the attacker’s choice.

Solution

Upgrade Upgrade to Gaim version 0.76 or later.

Apply a patch
The maintainers of Gaim have supplied a patch to address this vulnerability.

Vendor Information

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Gaim __ Affected

Updated: April 30, 2004

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

This vulnerability has been addressed in versions 0.76 and later. A patch is also available to address this issue.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• http://security.e-matters.de/advisories/012004.html
• http://gaim.sourceforge.net/gaim-0.75.patch
• http://www.debian.org/security/2004/dsa-434
• http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000813
• http://www.secunia.com/advisories/10705/

Acknowledgements

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

This document was written by Damon Morda.

Other Information

CVE IDs:	CVE-2004-0005
Severity Metric:	7.88 Date Public: