Mensaje de mi sysadmin:
> From: Steve Grandi <
[email protected]>
> Date: 02 January 2006 14:13:50 MST
> To:
[email protected]
> Subject: WMF Windows exploit
>
> Folks: We all know that the Internet can be a dangerous place.
> Especially for PCs running Windows....
>
> You have may have heard about the latest problem: called the WMF
> vulnerability after the type of image file (.wmf) that is the main
> vector for infection. Infected computers are likely to become
> components in "Zombie Nets" used by Organized Crime for blackmail
> and Spam/virus propagation. Some commentators are predicting that
> the WMF vulnerability will become a major disaster over the next
> few days...
>
> Please see
http://isc.sans.org/diary.php?storyid=994 and http://
>
http://www.infoworld.com/article/05/...ackers_1.html?
> 9809798 for details.
>
> So what do we do about it? First: Microsoft has NOT released a
> patch for the vunerability (presumably they will, eventually). So
> our usual mechanisms for protecting Windows systems are ineffective
> against this threat. (Hey. Microsoft: I'm working on a holiday,
> why aren't you?!?!).
>
> Second: If you are comfortable with tinkering with your computer,
> please do the following two exercises:
>
> Unregister the WMF DLL:
>
> * Click Start, click Run,
> type "regsvr32 -u %windir%\system32\shimgvw.dll" (without the
> quotation marks),
> and then click OK.
> * A dialog box appears to confirm that the un-registration
> process has succeeded. Click OK to close the dialog box.
>
> Install an unofficial (but vouched for by SANS) patch:
>
>
http://handlers.sans.org/tliston/wmffix_hexblog13.exe
>
> (Be sure to use "Add or Remove Programs" in the Control Panel to
> remove this patch once the Official Microsoft Patch arrives).
>
> Third: If you are not comfortable with tinkering,
>
> DO NOT surf the web beyond the NOAO Intranet until this issue
> settles out.
>
> DO NOT use any Instant Messenger (IM) program until this issue
> settles out.
>
> Avoid (DO NOT open) any image files that may arrive via email.
>
>
> "And, hey - let's be careful out there."
> --
> Steve Grandi
> National Optical Astronomy Observatory/AURA Inc., Tucson AZ USA