vSignup 2.1 - SQL Injection

source: https://www.securityfocus.com/bid/6606/info

A vulnerability has been discovered in vSignup. It has been reported that various PHP scripts used by vAuthenticate are prone to SQL injection attacks. This issue may be exploited by an unauthorized attacker to view protected web pages.

An attacker that is able to access protected web pages may gain sensitive information that may aid in launching further attacks against a target server.

http://www.example.org/chgpwd.php?USERNAME=[username]&PASSWORD='%20OR%20''='
http://www.example.org/admin/index.php?USERNAME='%20OR%20''='&PASSWORD='%20OR%201=1%20AND%20level='1