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[nycphp-talk] php in securityfocus 218

Chris Shiflett shiflett at php.net
Tue Oct 14 12:09:02 EDT 2003


--- jon baer <jonbaer at jonbaer.net> wrote:
> i once read a paper that covered crazy recon hacking techniques and
> the one that involved SQL injection was pretty interesting, I think
> if I remember it was more pertaining to Perl but could be applied in
> anything. Basically it was case scenerio where the hacker was
> actually looking for the exact box the admin material was being
> hosted on (the SQL Server/MySQL) and he discovered that if he placed
> <img> tags inside of an entry that he could trace back the IP request
> when the admin viewed results.

This sounds similar to CSRF, a topic I have found particularly interesting.
Imagine that the URL in an image tag causes the person requesting it to perform
some action:

<img src="http://stocks.example.org/?task=trade&from=MSFT&to=RHAT&qty=1000" />

There is an article in php|a this month (which should come out today) that has
more information about this. You can also read the original "paper" at:

http://www.tux.org/~peterw/csrf.txt

Chris

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