full-disclosure - New Microsoft Internet Explorer mshtml.dll Denial of Service?

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Message-ID: <5F9D803B30A8E4418166E637D50E9E2A068154@miraculix.scip.ch>
From: maru at scip.ch (Marc Ruef)
Subject: New Microsoft Internet Explorer mshtml.dll Denial of Service?

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Dear List

I was looking for some sources that serve translations of Buce Schneiers well-known Crypto-Gram[1]. So I found on the official page the hint, that there are some outdated Issues in a german version available.

After clicking in the link that brings me to http://www.galad.com/extras/cg/cg.htm , my Internet Explorer 6.0.2800.1106 "encounters a problem and needs to close". After a bit of debugging I could determine that the problem must be existing in the library mshtml.dll.

I tried to do a small and dirty analysis of the problem. So I fetched the whole page that encounters the error, but I couldn't reproduce the program shutdown with the offline version. It doesn't matter if I keep the original linking and embedded pictures as a link to the original web source.

Then I deactivated the Internet Explorers possibility of showing pictures (Tools/Internet Options/Advanced/Show pictures). And now the error message doesn't come again. So it seems to me that one of the pictures produce the failure.

Again, I put all the graphics from the named page dedicated into the affected web browser (e.g. http://www.galad.com/frame/but0nr.gif ). But once more, I couldn't reproduce the error. Perhaps it is an interaction between HTML or JavaScript and a picture needed. It is very interesting, that other sub pages (e.g. http://www.galad.com/certify/mcse/mcse.htm ) or other browsers (e.g. Netscape Communicator 4.x, 6.x, and 7.x) are not affected.

Can somebody help me to figure out the real problem? Or is this an old issue I can't recognize?

Sincerely,

Marc Ruef

[1] http://www.counterpane.com/crypto-gram.html

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