full-disclosure - Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover

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Message-ID: <1059029372.1180.7.camel@elendil.intranet.cartel-securite.net>
From: blancher at cartel-securite.fr (Cedric Blancher)
Subject: Re: Cisco IOS Denial of Service  that
	affects most Cisco IOS routers- requires power cycle to recover

Le mer 23/07/2003 ? 19:43, lee.e.rian@...sus.gov a ?crit :
> So... has anyone been able to verify that the problem occurs when the TTL
> expires without the packet being addressed to the router?  Or is it a
> requirement that the evil packet be addressed to the router?

I checked this and it appears packets have to be addressed to target
router. Transit evil packets which TTL would expire on a router won't
affect it.

My tests were performed using Scapy to generate following packets :

	IP proto set to vulnerable ones
	TTL set to expire on target router
	IP payload set to 26 "X"


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