The following works fine if the request is something like http://foo.com/bar.cgi?baz=image.jpg

What if the request is something like http://www.cheese.com/foo?file=image.jpg%22%3E%3C!--%20#include%0Afile=%22/etc/passwd%22--%3E%3Cspan%20id=%22foo

Alright, I'm picking on you for comments like "This never works" and "Just for fun". If you're not sure what something does, please find out before you recommend it to someone else.

Using CGI.pm will not fix the exploitish URI above, though it will prevent you from hand rolling form parsing code. Reading through perldoc perlsec won't automatically fix the potential security hole, but it will help you think in terms of how to minimize the risk. ©

In reply to Re: Re: Making webpages from a single CGI by chromatic
in thread Making webpages from a single CGI by Anonymous Monk

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