[38206] in bugtraq
Internet Explorer valid JavaScript-file successfull load detection local file enumeration
daemon@ATHENA.MIT.EDU (Berend-Jan Wever)
Fri Jan 14 13:08:32 2005
Message-ID: <002c01c4fa1c$25d87eb0$0100a8c0@grotedoos>
From: "Berend-Jan Wever" <skylined@edup.tudelft.nl>
To: <full-disclosure@lists.netsys.com>, <bugtraq@securityfocus.com>
Date: Fri, 14 Jan 2005 10:33:43 +0100
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Hi all,
Internet Explorer allows webpages on a remote server to load scripts from the local harddisk. These scripts get run in the remote server's security zone. This is not so much cross-site scripting but what I will call "cross-site loading" for now. Cross-site loading is not a new problem, a number of these bugs have been found already, most of which have not been fixed yet, even though the problem is over two years old now.
Anyway, using this variant I constructed a webpage that will try to load a JavaScript that is present by default on win2k from various locations on your harddisk(s). If it succeeds, one can assume this is the windows installation directory.
Demo and example:
http://www.edup.tudelft.nl/~bjwever/advisory_ie_flaws.html.php
(I also added demos and examples for two other old, known and unfixed cross-site loading problems).
FireFox does not allow any cross-site loading as far as I could tell, all three demo's do not work on it for that matter.
Cheers,
Berend-Jan Wever
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