[no1_vern]

http://www.techimo.com/newsapp/index.pl?photo=15546

AND:
http://www.f-secure.com/weblog/

Quote:

Microsoft's bulletin confirms that this vulnerability applies to all the main versions of Windows: Windows ME, Windows 2000, Windows XP and Windows 2003.

They also list the REGSVR32 workaround. It's a good idea to use this while waiting for a patch. To quote Microsoft's bulletin:

Un-register the Windows Picture and Fax Viewer (Shimgvw.dll)

1. Click Start, click Run, type "regsvr32 -u %windir%\system32\shimgvw.dll"
(without the quotation marks), and then click OK.

2. A dialog box appears to confirm that the un-registration process has succeeded.
Click OK to close the dialog box.

Impact of Workaround: The Windows Picture and Fax Viewer will no longer be started
when users click on a link to an image type that is associated with the Windows Picture and Fax Viewer.

To undo this change, re-register Shimgvw.dll by following the above steps.
Replace the text in Step 1 with “regsvr32 %windir%\system32\shimgvw.dll” (without the quotation marks).

This workaround is better than just trying to filter files with a WMF extension. There are methods where files with other image extensions (such as BMP, GIF, PNG, JPG, JPEG, JPE, JFIF, DIB, RLE, EMF, TIF, TIFF or ICO) could be used to exploit a vulnerable machine.