[UNIX] IcrediBB Contains a Cross Site Scripting Vulnerability

From: support@securiteam.com
Date: 04/21/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Sun, 21 Apr 2002 21:15:39 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  IcrediBB Contains a Cross Site Scripting Vulnerability
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SUMMARY

 <http://www.icredibb.com> IcrediBB is a web-based bulletin board that is
PHP powered, with a MySQL backend. Quick as well as easy on the server's
resources. A Cross Site Scripting has been found due to insufficient
checking of user input in both thread title and body. Therefore, a user
may post a message containing hostile JavaScript causing its execution
upon reading of messages, or while viewing a list of new messages.

DETAILS

Vulnerable systems:
IcrediBB version 1.1

Vendor status:
Vendor has been notified of all issues discussed.

Exploit:
Posting a message containing:
<script>alert('Cross Site Scripting possible');</script>
In either the subject line or the message's body will cause a user (while
viewing either the title or the body) to execute the JavaScript.

ADDITIONAL INFORMATION

The information has been provided by <mailto:exce@netwinder.nu> Daniel
Nyström.

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