RE: MS SQL WORM IS DESTROYING INTERNET BLOCK PORT 1434!

["trent dilkie" <trent () dilkie com>]

Can anybody confirm that this worm is spreading on the Desktop Engine too?
(MSDE)

Thanks,
   Trent.

-----Original Message-----
From: H D Moore [mailto:sflist () digitaloffense net] 
Sent: Saturday, January 25, 2003 6:49 AM
To: bugtraq () securityfocus com
Subject: Re: MS SQL WORM IS DESTROYING INTERNET BLOCK PORT 1434!


A worm which exploits a (new?) vulnerability in SQL Server is bringing  the
core routers to a grinding halt. The speed of the propagation can be
attributed to the attack method and simplicity of the code. The worm  sends
a 376-byte UDP packet to port 1434 of each random target, each  vulnerable
system will immediately start propagating itself. Since UDP  is
connection-less, the worm is able to spread much more quickly than  those
using your standard TCP-based attack vectors (no connect  timeouts).

Some random screen shots, a copy of the worm as a perl script, and a
disassembly (sorry, no comments) can be found online at:

http://www.digitaloffense.net/worms/mssql_udp_worm/

-HD

On Saturday 25 January 2003 01:11, Michael Bacarella wrote:
> I'm getting massive packet loss to various points on the globe. I am 
> seeing a lot of these in my tcpdump output on each host.
>
> 02:06:31.017088 150.140.142.17.3047 > 24.193.37.212.ms-sql-m:  udp 376 
> 02:06:31.017244 24.193.37.212 > 150.140.142.17: icmp: 24.193.37.212 
> udp port ms-sql-m unreachable [tos 0xc0
>
> It looks like there's a worm affecting MS SQL Server which is 
> pingflooding addresses at some random sequence.
>
> All admins with access to routers should block port 1434 (ms-sql-m)!
>
> Everyone running MS SQL Server shut it the hell down or make sure it 
> can't access the internet proper!
>
> I make no guarantees that this information is correct, test it out for 
> yourself!

-------------------------------------------------------