Full Disclosure mailing list archives

Re: rumours of new Cisco IOS vulnerability


From: Blue Boar <BlueBoar () thievco com>
Date: Wed, 16 Jul 2003 14:45:45 -0700

Len Rose wrote:
According to what I've been reading it's a remotely
exploitable denial of service situation, based on
specially crafted packets designed to fill up the
"process switched" input queues on an interface.

That generally means packets with a destination address of one of the router's own interfaces. If there's some mystery exploit out there, one workaround would be to firewall the router's own IP address(es). This would still allow the router to perform its routing function for other IPs.

                                        BB

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