nanog mailing list archives

RE: Please run windows update now


From: "Keith Medcalf" <kmedcalf () dessus com>
Date: Fri, 12 May 2017 22:43:25 -0600


The SMBv1 issue was disclosed a year or two ago and never patched.
Anyone who was paying attention would already have disabled SMBv1.

Thus is the danger and utter stupidity of "overloading" the function of service listeners with unassociated 
road-apples.  Wait until the bad guys figure out that you can access the same "services" via a connection to the DNS 
port (UDP and TCP 53) on windows machines ...

--
˙uʍop-ǝpısdn sı ɹoʇıuoɯ ɹnoʎ 'sıɥʇ pɐǝɹ uɐɔ noʎ ɟı


-----Original Message-----
From: NANOG [mailto:nanog-bounces+kmedcalf=dessus.com () nanog org] On Behalf
Of Karl Auer
Sent: Friday, 12 May, 2017 18:58
To: nanog () nanog org
Subject: Re: Please run windows update now

On Fri, 2017-05-12 at 10:30 -0800, Royce Williams wrote:
- In parallel, consider investigating low-hanging fruit by OU
(workstations?) to disable SMBv1 entirely.

Kaspersky reckons the exploit applies to SMBv2 as well:

https://securelist.com/blog/incidents/78351/wannacry-ransomware-used-in
-widespread-attacks-all-over-the-world/

I thought it was a typo in para 2 and the table, but they emailed back
saying nope, SMBv2 is (was) also broken. However, they also say (same
page) that the MS patch released in March this year fixes it.

Assuming they are right, I wonder why Microsoft didn't mention SMBv2?

Regards, K.

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer () biplane com au)
http://www.biplane.com.au/kauer
http://twitter.com/kauer389

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