Hi all,

I haven't seen much noise on this list about MS02-045 (Unchecked Buffer in
Network Share Provider Can Lead to Denial of Service (Q326830)), but the
implications are very nasty. Any unpatched WinNT/2K/XP or .NET machine on
your network that's listening on port 139 and/or 445 can be crashed in
about two seconds with a malformed SMB packet. I highly disagreed with
Microsoft's assessment that this was only a "moderate" threat level to
intranet and desktop systems because the exploit is so easy to perform.

It was bad enough in theory, but now a script-tot friendly GUI version of
the exploit has been posted on PacketStorm, and it works against all of
the above. You can try for yourself at
http://packetstorm.decepticons.org/0208-exploits/SMBdie.zip

We worked through the weekend to get a large percentage of our boxen
patched - you may have to do the same.

The old "WinNuke" from the evil days of Win95 is back.

Thanks for listening,

Kevin

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