|
Yahoo! Chat and Messenger Hostname Buffer Overflow Vulnerability
|
|
|
|
|
Secunia Advisory:
|
SA8924
|
|
|
Release Date:
|
2003-06-03
|
|
|
Critical:
|
Moderately critical
|
|
Impact:
|
System access
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | Yahoo! Chat
Yahoo! Messenger 5.x
|
|
|
Want to know the next time vulnerabilities are fixed in this product?
- Companies can be alerted via email and SMS! |
|
|
Description:
A vulnerability has been identified in Yahoo! Chat and Messenger, which allows malicious people to cause a buffer overflow.
The problem is that the hostname parameter isn't verified properly in the Yahoo! Audio Conferencing ActiveX control. A hostname longer than 500 characters will cause the ActiveX control to crash when the "createandjoinconference" method is called.
If the hostname has been crafted in a malicious way, it could cause arbitrary code to be executed on the system.
The Yahoo! Audio Conferencing ActiveX control is marked as safe in Internet Explorer, thus the user will receive no warnings before the ActiveX control is launched.
Solution:
Updated versions are available from Yahoo!:
http://help.yahoo.com/help/us/mesg/use/use-45.html
Provided and/or discovered by:
Cesar Cerrudo
|
|
|
|
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
|
|
|
8 Related Secunia Security Advisories
|
|
|
1. Yahoo! Messenger AudioConf ActiveX Control Buffer Overflow
|
|
2. Yahoo! Messenger YMailAttach ActiveX Control Buffer Overflow
|
|
3. Yahoo! Messenger Audio Setup Wizard Privilege Escalation
|
|
4. Yahoo! Messenger Filename Buffer Overflow Vulnerability
|
|
5. Yahoo! Messenger IMVironment Cross-Site Scripting Vulnerability
|
|
6. Yahoo! Messenger "yauto.dll" Buffer Overflow Vulnerability
|
|
7. Yahoo! Messenger File Transfer Denial of Service Vulnerability
|
|
8. Yahoo! Chat and Messenger Stack and Heap Overflows
|
|
|
Send Feedback to Secunia
|
|
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.
Ideas, suggestions, and other feedback are most welcome.
|
|
|
|
