Full Disclosure mailing list archives
Re: SSH brute force blocking tool
From: Tavis Ormandy <taviso () sdf lonestar org>
Date: Mon, 27 Nov 2006 21:29:33 +0000
On Mon, Nov 27, 2006 at 04:21:19PM -0500, gabriel rosenkoetter wrote:
Mea culpa. Tavis's exploit doesn't so scary things, although he's right you should really be doing a bit more sanitization of (evil) user-supplied input, given that you're (insisting that you) run as root.
Gabriel, I was referring to this line: awk '!/#/ && /\./ && !a[$0]++ {print "iptables -A INPUT -s "$1" -i eth0 -d '$ifaddr' -p TCP --dport 22 -j REJECT"}' /etc/hosts.deny |\ awk '/iptables/ && !/#/ && !/-s -i/'|sh (note the |sh), $1 can be controlled by specially crafted attempted logins. Thanks, Tavis. -- ------------------------------------- taviso () sdf lonestar org | finger me for my pgp key. ------------------------------------------------------- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Re: SSH brute force blocking tool, (continued)
- Re: SSH brute force blocking tool Tavis Ormandy (Nov 27)
- Re: SSH brute force blocking tool J. Oquendo (Nov 27)
- Re: SSH brute force blocking tool Tavis Ormandy (Nov 27)
- Re: SSH brute force blocking tool gabriel rosenkoetter (Nov 27)
- Re: SSH brute force blocking tool J. Oquendo (Nov 27)
- Re: SSH brute force blocking tool Tavis Ormandy (Nov 27)
- Re: SSH brute force blocking tool gabriel rosenkoetter (Nov 27)
- Re: SSH brute force blocking tool J. Oquendo (Nov 27)
- Re: SSH brute force blocking tool J. Oquendo (Nov 27)
- Re: SSH brute force blocking tool gabriel rosenkoetter (Nov 27)
- Re: SSH brute force blocking tool Tavis Ormandy (Nov 27)
- Re: SSH brute force blocking tool gabriel rosenkoetter (Nov 27)
- Re: SSH brute force blocking tool Michael Holstein (Nov 27)
- Re: SSH brute force blocking tool Joshua D. Abraham (Nov 27)
- Re: SSH brute force blocking tool J. Oquendo (Nov 27)
- Re: SSH brute force blocking tool gabriel rosenkoetter (Nov 27)
- Re: SSH brute force blocking tool J. Oquendo (Nov 27)
- Re: SSH brute force blocking tool Michael Holstein (Nov 27)
- Re: SSH brute force blocking tool J. Oquendo (Nov 27)
- Re: SSH brute force blocking tool Tonnerre Lombard (Nov 28)
- Re: SSH brute force blocking tool Brian Eaton (Nov 27)