bugtraq - Re: ICMP spoofed source tunneling

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Date: Wed, 22 Sep 2004 12:33:50 +0200
From: fenfire@...esend.de
To: bugtraq@...urityfocus.com
Subject: Re: ICMP spoofed source tunneling


On Tue, Sep 21, 2004 at 08:55:04PM +0400, Max Tulyev wrote:
> Let's imagine in Net a hacker having his source server(S), destination
> server(D), and a ip-capable device - victim(V). S sends to V spoofed ICMP
> echo request packet containing IP source address of D, and the data in
> Payload.
> 
> When V receiving that packet, it sends ICMP echo-reply packet to D, AND
> FORWARDS TO D ALL DATA IN PAYLOAD!

This could also be used by peer-to-peer networks to achieve sender
anonymity. (Of course you could also directly send UDP packets with forged
source addresses...)