Vulnerability ID: HTB22522 Reference: http://www.htbridge.ch/advisory/application_logic_error_in_dt_centrepiece.html Product: DT Centrepiece Vendor: DT Services ( http://www.dt.net.nz/ ) Vulnerable Version: 4.5 and Probably Prior Versions Vendor Notification: 22 July 2010 Vulnerability Type: Application Logic Error 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 user can activate an arbitrary account. The system account is activated, has a predictable URL. This allows the user to activate any account without receiving the activation email. The following PoC is available: http://host/activate.asp?p=USERNAME