bugtraq - SignHere guestbook vulnerability.

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Message-ID: <000001c2fb52$bbbe34d0$d987763e@user1>
Date: Sat, 5 Apr 2003 13:07:05 +0400
From: "drG4njubas" <drG4nj@...l.ru>
To: <bugtraq@...urityfocus.com>
Subject: SignHere guestbook vulnerability.

This advisory nd other useful files 
can be found at www.blacktigerz.org

Subject:
SignHere guestbook vulnerability.

Description:
Free, easy-to-use guestbook. Main features are: message text 
formatting (bold text, urls etc.); inserting smiles as icons; 
web-based administration; email notifications about new posts. 
Also html output is optimized to maximize download speed. 

Vendor:
Bitstrike software.
http://www.bitstrike.com

Vulnerability:
Default.asp neglects filtering user input allowing 
for script injection to the guestbook via "Email" 
field. The injected script will be executed in 
anyones browser who visits the guestbook.

____________________________
Best Regards,   drG4njubas
Black Tigerz Research Group
http://www.blacktigerz.org