Yahoo! Messenger IMVironment Cross-Site Scripting Vulnerability

BID:9158

Info

Yahoo! Messenger IMVironment Cross-Site Scripting Vulnerability

Bugtraq ID: 9158
Class: Input Validation Error
CVE:
Remote: Yes
Local: No
Published: Dec 05 2003 12:00AM
Updated: Dec 05 2003 12:00AM
Credit: Discovery is credited to Chet Simpson <[email protected]>.
Vulnerable: Yahoo! Messenger 5.6 .0.1355
Yahoo! Messenger 5.6 .0.1347
Yahoo! Messenger 5.6
Yahoo! Messenger 5.5 .1249
Yahoo! Messenger 5.5
Not Vulnerable:

Discussion

Yahoo! Messenger IMVironment Cross-Site Scripting Vulnerability

Yahoo! Messenger is prone to a cross-site scripting vulnerability via IMVironment error dialogs. This may occur when a 'ymsgr' URI specifies an invalid IMVironment that includes hostile HTML and script code. This could permit various attacks since the attacker may execute hostile script code in the context of the client. Consequences include exposure of Yahoo messenger IDs and encoded credentials.

It should also be noted that this issue could potentially be exploited to corrupt IMVironment data, causing the client to not function properly.

Exploit / POC

Yahoo! Messenger IMVironment Cross-Site Scripting Vulnerability

There is no exploit required.

Solution / Fix

Yahoo! Messenger IMVironment Cross-Site Scripting Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

References

Yahoo! Messenger IMVironment Cross-Site Scripting Vulnerability

References:

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