Penetration Testing mailing list archives

XSS bypassing htmlentities() function


From: "serge gorbunov" <thermit () rogers com>
Date: Mon, 2 Nov 2009 20:31:44 -0500

Hello everyone,

I'm doing a penetration testing of php app. I know that before user data is
echoed to the page it goes through htmlentities() php function like this:
$filtered_data = htmlentities( $data ) ;
$data is some user data that was entered earlier. Then $ filtered_data is
echoed sometime later. 

Is there a way inject code into this application, so later when it gets
echoed back to the users my code gets executed?

Thanks,
Serge


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