Re: XML scripting in IE, Outlook Express

From: Farley, Tim (ISSAtlanta) (TFarleyat_private)
Date: Wed Apr 25 2001 - 10:07:48 PDT

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    > I continue to believe all versions of IE 5.x are vulnerable.
    > A lot of people have missed the point of my advisory.
    > On 20 April 2001 Microsoft released Ver. 2.0 of their
    > security bulletin which seems to fix a bug but not this issue.
    >
    > To check whethere you are vulnerable to this issue:
    > 1. Disable Active Scripting for the Internet Zone (in case
    > www.guninski.com is in
    > the Internet Zone for you).
    > 2. Go to http://www.guninski.com/xstyle.eml or to
    > http://www.guninski.com/xstyle.xml
    > 3. If you see a message box "This is VBscript"  then you are
    > vulnerable because this message is produced by active
    > scripting which is disabled in (1).
    > 4. Worse, this works from email at least in Outlook Express.
    
    I am afraid I must agree with Toni and contradict you.
    
    I followed the exact procedure you describe above, and my copy of IE 5.5
    does NOT appear to be vulnerable.  Instead of a message box, I get this in
    the browser window:
    
    ----------------------------------------------------------------------------
    ----
    Microsoft JScript runtime error Automation server can't create object line =
    2, col = 0 (line is offset from the tag). Error returned from property or
    method call. The XML page cannot be displayed
    Cannot view XML input using XSL style sheet. Please correct the error and
    then click the Refresh button, or try again later.
    Microsoft JScript runtime error Automation server can't create object line =
    2, col = 0 (line is offset from the tag). Error returned from property or
    method call.
    ----------------------------------------------------------------------------
    ----
    
    (That text appears inside an IFRAME for the .EML variation).
    
    I am running the following:
    
    NT 4.0 SP6a
    IE 5.5.4522.1800
    Updates: SP1, Q279328, Q261255 (and maybe others but the about box truncates
    this list).
    WSCRIPT.EXE 5.1.0.4615
    MSXML.DLL 8.00.5226.0
    
    I have just about everything set to "Disabled" in my Internet zone.
    
    Let me know if you need other version or configuration information.
    
    =====================================
    MY PHONE NUMBERS HAVE CHANGED!  PLEASE MAKE NOTE OF THE NEW ONES BELOW.
    =====================================
    Tim Farley
    Senior Researcher
    Internet Security Systems
    
    tfarleyat_private
    (404) 236-2600 / Direct Dial (404) 236-2873 / fax (404) 236-2624
    http://www.iss.net
    
    Internet Security Systems - The Power to Protect
    =====================================
    



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