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09 January 2012


In nginx, you can set this in your http{} section.

client_max_body_size 64k

Good job! I'm not sure though that repetitive payloads are required for the attack to work (Maybe it is like this for the ASP.NET implementation, but for PHP only POST names should trigger collisions, values can be anything - though I agree I didn't check it)

The hash_dos_param_name.txt could also include collisions for PHP. I've prepared a PoC at

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