Re: PHP global variable overwrites

[ascii <ascii () katamail com>]

john.h.hoyt () gmail com wrote:
> Could someone explain to me simply how the HTTP POST method is used to overwrite a PHP global variable, and how this 
> might be used as an attack?

Not sure if you mean the standard register_globals behavior or the
?GLOBALS[foo] one. In the second case here's some documentation:

http://www.ush.it/2006/01/25/php5-globals-vulnerability/
http://www.ush.it/2006/01/24/pmwiki-multiple-vulnerabilities/
http://www.hardened-php.net/advisory_172005.75.html

Bye,
Francesco `ascii` Ongaro
http://www.ush.it/

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