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Evaders Squadron Coding [ESC] :: View topic - Security: Php Nuke wild POST XSS
Security: Php Nuke wild POST XSS

 
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Evaders99



Joined: Jan 11, 2002
Posts: 3022
Location: USA

PostPosted: Sun Mar 11, 2007 10:29 pm    Post subject: Security: Php Nuke wild POST XSS Reply with quote

In response to this report
http://www.ush.it/2007/03/09/php-nuke-wild-post-xss/

I am posting a reply here:

The Patched files add a number of protections to stop this. First, the Downloads query variable has been patched. Second, known exploits using document . cookie have been blocked. As well, the code that this seeks to exploit is no longer in the Patched files (FB used an older Patched files version in 8.0)

However, the main point seems to be an injection using _SERVER.
We can block the usage of _SERVER by adding a block into the code like
(Spaces have been added to allow this to post correctly)

Code:

in mainfile.php

FIND

(stristr($postString,'document . location')) OR (stristr($postString_64,'document . location'))

AFTER, ADD

OR (stristr($postString,'_SERVER=')) OR (stristr($postString_64,'_SERVER='))

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