RE: large scale distributed scan of port tcp 445

A Google search turned this up

"Sending malformed packets to the Microsoft-ds port [TCP 445] can result in
kernel resources being allocated by the Lanman service," said KPMG. "The
consequences of such an attack could vary from the Windows 2000 host
completely ignoring the attack, to a blue screen"

Here is the link to the site
http://www.vnunet.com/News/1131065

>From what I read, this is a DoS attack, and from the logs you sent, I would
say someone is probably trying to create a worm to exploit this, particuarly
looking at the fact that you got about 100 hits. Maybe the script kiddie is
trying to get his script de-bugged.

Rick Darsey
MCSA (Win2K), Network +, SCO ACE

-----Original Message-----
From: Jim Harrison (SPG) [mailto:jmharr_at_microsoft.com]
Sent: Friday, August 09, 2002 1:50 PM
To: Thomas Cannon; Rob Keown
Cc: Russell Fulton; incidents_at_securityfocus.com
Subject: RE: large scale distributed scan of port tcp 445

Any W2K or later OS from Microsoft (except maybe .NET server) installs
with that port open.
It's not specific to XP. It was added to W2K as a NetBIOS -135/139
replacement.

* Jim Harrison
MCP(NT4/2K), A+, Network+
Services Platform Division

The burden of proof is not satisfied by a lack of evidence to the
contrary..

-----Original Message-----
From: Thomas Cannon [mailto:tcannon_at_noops.org]
Sent: Friday, August 09, 2002 9:54 AM
To: Rob Keown
Cc: 'Russell Fulton'; incidents_at_securityfocus.com
Subject: RE: large scale distributed scan of port tcp 445

On Thu, 8 Aug 2002, Rob Keown wrote:

> That is MS-DS as I recall. I don't see anything in my logs but dshield

> has the port with a huge spike of targets, with low sources on 7/28.
> http://isc.incidents.org/port_details.html?port=445 It was ranked 4th
> on that day.
>
> Cannot recall any exploits on this port or service.
>
> Anyone know of any exploits on this?

I didn't know any, but this might be something to consider, if nothing
else:

http://www.sygate.com/alerts/XP_default_TCP445_open.htm

Cheers,

-tcannon

>
> Rob Keown
>
>
>
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