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From Fayland Lam <>
Subject [users@httpd] Re: POST content Attack?
Date Wed, 21 May 2008 09:05:07 GMT wrote:
> sounds like you could benefit from logging incoming request payloads. Consider mod security
to sanitize requests and log, if you can't modify your perl script to do it, how do you modify
the textarea data before doing the INSERT? Do you know what the perl script has been doing?
Have you ensured that you files/permissions have not been modified? I think 11M is far too
much for a text area, consider modifying that value in parts of your application that are
not file uploads and/or truncating input inside you perl script.

not doubt that we limited the length of textarea in our Perl script.
but it seems it's not reach there. and the request is hanging, or else,
Perl will print an error.

any more hint?

Thanks, dude.

> Sent from my BlackBerry® wireless device
> -----Original Message-----
> From: Fayland Lam <>
> Date: Wed, 21 May 2008 09:31:23 
> Subject: [users@httpd] POST content Attack?
> hi list.
> we are in attack I think. our Perl script is taking 2G to process one 
> request.
> 8: 18940 1567M  5.9M 1567M 1121M W  0.000s  0.000s  459 
> POST /comment/post HTTP/1.0
> that's from vmonitor.
> I'm wondering is there someone to put large content in our comment 
> textarea?
> we limited size in Apache httpd.conf (LimitRequestBody 11000000) but it 
> doesn't help.
> or it's not related to POST content?
> any hint is really appreciated.
> Thanks.

Fayland Lam //
Foorum based on Catalyst //

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