full-disclosure - Cisco IOS Shellcode Presentation

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Date: Sat Jul 30 15:09:17 2005
From: geoincidents at nls.net (Geo.)
Subject: Cisco IOS Shellcode Presentation

> Anyhow, as for Cisco's DJ's spinning "it's only an IPv6 thing you can all
> go home now...", isn't it humorous to see that IPv6 is supposed to be
> "that much more secure". Obviously I wouldn't believe Cisco when they
> state its IPv6 based only don't get me wrong, it's funny to see spin.

A few points.

1) Lynn was put onto this from something he found on a Chinese hacking site.
He hasn't actually said he invented this technique has he?

2) IPv6 is fairly common in Asia, isn't it? The "it's not an issue because
nobody uses IPv6" is a US centric viewpoint.

3) Cisco slipstreamed the patch and did a stealth release. The actual
advisory wasn't released until Lynn did his presentation.

4) If it's such a "who cares" type thing, why did Cisco try to snuff it out?
Obviously Cisco's spin and actions don't match here.

5) given the above, is it possible that this bug and possibly this technique
of getting root on routers was being used to spy on people? Remember back in
the late 90's when some ISP in McLean VA "accidentally" rerouted half of
Europe thru their network which just happens to be where the CIA
headquarters are?

http://news.com.com/Router+glitch+cuts+Net+access/2100-1033_3-279235.html

This type of exploit would appear to me to be exactly the type of useful
thing that intelligence services would love. Look at the facts, you could
tunnel smtp and/or http traffic thru anywhere you wanted leaving icmp
traffic passing the normal routes so that a traceroute shows nothing
suspicious. Could you ask for more?

Geo.