[Dailydave] SMBLoris

[Oliver Friedrichs]

Sorry to see that things haven’t changed. 

 

While it’s certainly not as sexy as RCE, it’s damaging, can lead to data loss, and as you point out, an enterprise wide outage.

 

Found the first one of these in NT in 1998 while reversing Microsoft’s DCE-RPC implementation which at the time was not yet documented: 

 

http://insecure.org/sploits/NT.smb.login.DOS.html

 

Oliver

 

From: Dailydave <dailydave-bounces at lists.immunityinc.com> on behalf of Dave Aitel <dave.aitel at gmail.com>
Date: Tuesday, August 8, 2017 at 11:27 AM
To: "dailydave at lists.immunityinc.com" <dailydave at lists.immunityinc.com>
Subject: [Dailydave] SMBLoris

 

So I know it's Microsoft Tuesday, but we've been working on that SMBLoris bug a bit more for release to customers as well, and as part of that, we're spending a lot of time thinking about it, as deceptively simple as it is.

 

The thing I'm wondering is why people outside of FinancialSec  think DoS is almost a non-issue. Most companies have only a few domain controllers, and when those go down, the company goes down. And they have to be reachable on these exact ports, from anywhere in the company, essentially. 

 

It seems like this is one of those things that got a tiny splash of attention, but could be worth more. :)

 

-dave

 

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