source: https://www.securityfocus.com/bid/13761/info

FunkyASP AD Systems is prone to an SQL injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input before using it in an SQL query.

Successful exploitation could result in a compromise of the application, disclosure or modification of data, or may permit an attacker to exploit vulnerabilities in the underlying database implementation. 

Supplying admin for the Username and ' or ''=' for the
Password of login.asp is sufficient to authenticate to the administrator account.