Rapid Classified 3.1 - 'advsearch.asp' Cross-Site Scripting

source: https://www.securityfocus.com/bid/21197/info
    
Rapid Classified is prone to multiple input-validation issues, including multiple cross-site scripting issues and an SQL-injection issue, because the application fails to properly sanitize user-supplied input.
    
A successful exploit of these vulnerabilities could allow an attacker to compromise the application, access or modify data, steal cookie-based authentication credentials, or even exploit vulnerabilities in the underlying database implementation. Other attacks are also possible.
    
http://www.example.com/advsearch.asp?zipr=1&D1=0&D4=1&zipOpt=20&dosearch=[xss]