greensql firewall permanent xss

Type securityvulns
Reporter Securityvulns
Modified 2007-09-24T00:00:00


Site: live-demo: Platform: alls Bug: permanent xss Special condition: none Impact : semi-critical

1) Introduction 2) Bug 3) Proof of concept 4) Credits =========== 1) Introduction =========== GreenSQL is an Open Source database firewall used to protect databases from SQL injection attacks. GreenSQL works in a proxy mode and has built in support for MySQL. The logic is based on evaluation of SQL commands using a risk scoring matrix as well as blocking known db administrative commands (DROP, CREATE, etc). ====== 2) Bug ======

permanent xss

===== 3)Proof of concept ===== well the proof of concept can be anywhere , like a login form, an url value everythings is loggued in the green-sql admin panel. the problem is because there's no filter , so the script logs your query in the database and then it's printed in the alert section . this can be pretty nastie ... you "protect" your script agains sql injection with a firewall , but you have a permanent xss in the panel . and actually only the admin see the logs . so you know that the cookie is the good one !

an exemple can be given in the demo website : fill login or password with <script>alert(document.cookie)</script> then go in the admin panel : xss will be executed .

===== 5)Credits =====

Laurent gaffie contact :