source: https://www.securityfocus.com/bid/15552/info

CommodityRentals is prone to an SQL injection vulnerability.

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. 

http://www.example.com/DVD/moviedetails.php?usersession=&user_id=[sql]&movie_id=312