netdev - RE: Is TCP vulneribility patch (as in RFC 5961) done in linux?

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Message-ID: <1342427747.4812.2.camel@edumazet-glaptop>
Date:	Mon, 16 Jul 2012 10:35:47 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	"Kiran (Kiran Kumar) Kella" <kkiran@...adcom.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: Is TCP vulneribility patch (as in RFC 5961) done in linux?

On Mon, 2012-07-16 at 10:33 +0200, Eric Dumazet wrote:
> On Mon, 2012-07-16 at 07:06 +0000, Kiran (Kiran Kumar) Kella wrote:
> > Looking into the file tcp_input.c in the latest stable linux release 3.4.4 source, I understand the fix for this recommendation is not implemented in Linux.
> > Any reason why it was not addressed?
> 
> Nobody cared ?
> 
> Are you planning to send a patch ?
> 

By the way, if the attacker replaces the RST bit by FIN bit, how
are we going to deal with the problem ?

Also many middleboxes will drop the challenge ACK...

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