Vulnerability Note VU#419419
Yahoo! Messenger contains buffer overflow in "message" field
OverviewYahoo! Messenger is an instant messaging client. There is a remotely exploitable buffer overflow vulnerability in the "message" field of Yahoo! Messenger.
I. DescriptionA 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.
II. ImpactA 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.
III. SolutionThis 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.
Systems Affected
| Vendor | Status | Date Updated |
|---|
| Yahoo | Vulnerable | 5-Jun-2002 |
References
http://www.securityfocus.com/bid/4162
http://www.iss.net/security_center/static/8264.php
http://online.securityfocus.com/archive/1/257584
Credit
This vulnerablity was discovered by Scott Woodward.
This document was written by Jason Rafail.
Other Information
| Date Public | 02/21/2002 |
| Date First Published | 06/05/2002 02:14:25 PM |
| Date Last Updated | 06/05/2002 |
| CERT Advisory | CA-2002-16 |
| CVE Name | CAN-2002-0320 |
| Metric | 17.72 |
| Document Revision | 12 |
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