bugtraq - BackToFramedJpu - a successor of BackToJpu attack

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Message-ID: <20031125095638.23206.qmail@sf-www2-symnsj.securityfocus.com>
Date: 25 Nov 2003 09:56:38 -0000
From: Liu Die Yu <liudieyuinchina@...oo.com.cn>
To: bugtraq@...urityfocus.com
Subject: BackToFramedJpu - a successor of BackToJpu attack

BackToFramedJpu - a successor of BackToJpu attack

[tested]
OS:Win2k3,CN version
IE: with MS03-048 installed.

OS:WinXp, CN version
Microsoft Internet Explorer v6.Sp1; up-to-date on 2003/11/16

[overview]
A cross-zone scripting vulnerability has been found in Internet Explorer. If a webpage contains some subframe(either FRAME tag or IFRAME tag), its security zone may be compromised.

[demo]
There is a harmless demo:
http://www.safecenter.net/UMBRELLAWEBV4/BackToFramedJpu/BackToFramedJpu-MyPage.htm

[technical details]
After applying MS03-048 patch, no javascript-protocol URL won't be stored in URL history list any more, which means classical "javascript-protocol URL in history" attack doesn't work any more.
(Liu Die Yu's http://www.safecenter.net/UMBRELLAWEBV4/BackMyParent2/index.html)

However, if an attacker do the following things:
Navigate a sub-frame in victim document to a javascript-protocol URL, 
(first, navigate sub-frame to attacker's page, and then navigate the sub-frame a javascript-protocol URL)
and then navigate the top window away,
At last,navigate back("history.back()").

the javascript-protocol URL will be loaded by the top window(victim document) and script in the javascript-protocol URL will be executed in the security zone of victim document - a.k.a cross-site/zone/domain scripting

[Workaround]
Disable Active Scripting in INTERNET zone.

[Greetings]
greetings to:
Drew Copley, dror, guninski and mkill.

-----
all mentioned resources can always be found at UMBRELLA.MX.TC

[people]
LiuDieyuinchina [N0-@...2m] yahoo.com.cn
UMBRELLA.MX.TC ==> How to contact "Liu Die Yu"

[message]
A wise man learns from other's mistakes; a fool learns from his own.

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See my resume at my site. I am very eager to work, flexible, and 
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