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Re: [Full-disclosure] WMF Exploit

On Wed, Jan 04, 2006 at 09:58:37AM -0600, Todd Towles wrote:
> Ad wrote:
> > I don't think because here win98 doesn't recognize the .wmf extension.
> 
> Without installling a third-party image viewer, it is my understanding
> that pre-Windows 2000 OS are less vulnerable. But most people do have
> third-party image viewers installed and it is possible that these apps
> make the OS attackable.

IE 6 displayed WMF files on a test Win98 system just fine for
me.

Remember, just because when you double-click on a WMF file
Windows Explorer doesn't know what to do with it does NOT mean
that when presented to IE in an <img> tag, it won't. Even trying
to open the file with IE doesn't mean anything. You need to
try it in a webpage.

For example, take your sample WMF, sample.wmf, and create
a test page, wmf.htm,

        <html>
        <head>
        <title>WMF Rendering Test</title>
        <head>
        <body>
        The WMF image should appear below.
        <p>
        <img src="sample.wmf" alt="Not processed!">
        </body>
        </html>

And load that into IE. Works for me on Win98.
-- 
Crist J. Clark                     |     cjclark@xxxxxxxxxxxx
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