source: http://www.securityfocus.com/bid/13898/info

Loki Download Manager is prone to an SQL injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input to the 'default.asp' script 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. 

The following proof of concept is available:
user: anyuser
pass: 'or''='