source: https://www.securityfocus.com/bid/14685/info

Land Down Under is prone to multiple SQL injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input before using it in SQL queries.

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/ldu/index.php?c='
http://www.example.com/ldu/index.php?c=%27