Yahoo! Messenger contains buffer overflow in "message" field

2002-06-05T00:00:00
ID VU:419419
Type cert
Reporter CERT
Modified 2002-06-05T21:07:00

Description

Overview

Yahoo! Messenger is an instant messaging client. There is a remotely exploitable buffer overflow vulnerability in the "message" field of Yahoo! Messenger.

Description

A remotely exploitable buffer overflow exists in the "message" field that may permit a remote attacker to execute arbitrary code on the system with the privileges of the current user. It is possible to crash the Yahoo! Messenger client by overflowing the "message" field.

It should be noted that the attacker needs to use a custom client in order to exploit this vulnerability.


Impact

A denial of service situation is caused. However, this vulnerability is a buffer overflow, and may potentially allow the execution of arbitrary code on the local system with the privileges of the current user.


Solution

This vulnerability was resolved in version 5,0,0,1058.


The Yahoo! Messenger client communicates via port 5101 for peer to peer connections. Disabling the client, or blocking access to this port via a firewall may mitigate this attack.


Vendor Information

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Yahoo __ Affected

Notified: May 29, 2002 Updated: June 05, 2002

Status

Affected

Vendor Statement

Upgrade to at least version 5,0,0,1058. We recommend all users upgrade to the latest release, which was 5,0,0,1066 at the time of this advisory.

Vendor Information

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

Addendum

The CERT/CC has no additional comments at this time.

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

CVSS Metrics

Group | Score | Vector
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Base | |
Temporal | |
Environmental | |

References

  • <http://www.securityfocus.com/bid/4162>
  • <http://www.iss.net/security_center/static/8264.php>
  • <http://online.securityfocus.com/archive/1/257584>

Acknowledgements

This vulnerablity was discovered by Scott Woodward.

This document was written by Jason Rafail.

Other Information

CVE IDs: | CVE-2002-0320
---|---
CERT Advisory: | CA-2002-16
Severity Metric: | 17.72
Date Public: | 2002-02-21
Date First Published: | 2002-06-05
Date Last Updated: | 2002-06-05 21:07 UTC
Document Revision: | 12