full-disclosure - JavaScript get Internal Address (thanks to DanBUK)

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Date: Sat, 12 Aug 2006 09:55:02 +0100
From: "pdp (architect)" <pdp.gnucitizen@...glemail.com>
To: full-disclosure@...ts.grok.org.uk, pen-test@...urityfocus.com, 
	webappsec@...urityfocus.com, "Daniel Bartlett" <dan@...ox.org>, 
	bugtraq@...urityfocus.com
Cc: 
Subject: JavaScript get Internal Address (thanks to DanBUK)

http://www.gnucitizen.org/projects/javascript-address-info
http://f-box.org/~dan/jstest.html

The following technique was brought to me by DanBUK
(http://f-box.org/~dan/). Dan managed to find the internal IP address
of the visiting client by establishing a socket between local host and
the remote web server. Upon success the socket populates its structure
with all kinds of useful information among some of which are the
internal IP address and the hostname.

http://www.gnucitizen.org/projects/javascript-address-info/addressinfo.js

This technique requires Java, however I think that It should be
possible to achieve similar result by invoking special ActionScript
methods from Flash.

POC can be found on the url above.

-- 
pdp (architect)
http://www.gnucitizen.org

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