Excellent answer, thankyou.

I agree that scripts *should* use taint, but what if they don't ? A quick search of the bugtraq archives found http://www.securityfocus.com/archive/1/317234, which to my reading looks like a dodgy old CGI script that would cease to be exploitable if the Perl interpreter had poisoned null countermeasures. Seems like a good thing to me, maybe I will take a stab at writing a patch.

Thanks again

In reply to Re^2: Why do poisoned null attacks still work ? by pubnoop
in thread Why do poisoned null attacks still work ? by pubnoop

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