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From: Jurjen Oskam <jurjen@stupendous.org>
To: linux-kernel@vger.kernel.org
Subject: Re: Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified)Denial of Service Attack
Date: Mon, 13 Sep 2004 08:59:27 +0200	[thread overview]
Message-ID: <20040913065927.GA6100@quadpro.stupendous.org> (raw)
In-Reply-To: <002501c498f8$0a4ebc20$0200a8c0@wolf>

On Sun, Sep 12, 2004 at 12:40:56PM -0600, Wolfpaw - Dale Corse wrote:

> the bug is application level in this case. Can you explain
> though, how it is appropriate to have no timeout on CLOSE_WAIT.

See TCP/IP Illustrated, Volume 1 by W. Richard Stevens (ISBN
0-201-63346-9), page 238: "TCP Half-Close".

In short, you don't have a timeout on CLOSE_WAIT for the same reason you
don't have a timeout on ESTABLISHED.

-- 
Jurjen Oskam
"I often reflect that if "privileges" had been called "responsibilities" or
"duties", I would have saved thousands of hours explaining to people why
they were only gonna get them over my dead body." - Lee K. Gleason, VMS sysadmin

  parent reply	other threads:[~2004-09-13  6:59 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <02b201c498f6$8bb92540$0300a8c0@s>
2004-09-12 18:40 ` Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified)Denial of Service Attack Wolfpaw - Dale Corse
2004-09-12 18:01   ` Alan Cox
2004-09-12 19:48   ` Willy Tarreau
2004-09-13  6:59   ` Jurjen Oskam [this message]
     [not found] <02bf01c498ff$b6512470$0300a8c0@s>
2004-09-12 19:42 ` Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial " Wolfpaw - Dale Corse
2004-09-12 19:53   ` Willy Tarreau
     [not found] <02b001c498f6$7942bc50$0300a8c0@s>
2004-09-12 18:52 ` Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified)Denial " Wolfpaw - Dale Corse
2004-09-12 18:06   ` Alan Cox
     [not found] <02a401c498e9$9167aff0$0300a8c0@s>
2004-09-12 17:29 ` Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial " Wolfpaw - Dale Corse
2004-09-12 17:04   ` Alan Cox
2004-09-12 19:23     ` Toon van der Pas
2004-09-13  3:18       ` Paul Jakma
2004-09-13  3:30         ` Paul Jakma
2004-09-13  4:18           ` Willy Tarreau
2004-09-13  4:25             ` Paul Jakma
2004-09-13 19:07             ` Tonnerre
2004-09-13 19:18               ` Willy Tarreau
2004-09-13 19:25               ` Paul Jakma
2004-09-13 20:11           ` Ville Hallivuori
2004-09-14 14:55             ` Paul Jakma
2004-09-14 15:10               ` Alan Cox
2004-09-14 16:26                 ` Paul Jakma
2004-09-14 16:09                   ` Alan Cox
2004-09-14 17:17                     ` Paul Jakma
2004-09-20 22:02                       ` Florian Weimer
2004-09-21  2:14                         ` Herbert Xu
2004-09-21 18:32                           ` Florian Weimer
2004-09-21 19:56                             ` David S. Miller
2004-09-21 20:04                               ` Florian Weimer
2004-09-21 20:25                                 ` David S. Miller
2004-09-21 20:51                                   ` Florian Weimer
2004-09-14 19:41                 ` Willy Tarreau
2004-09-14 18:56                   ` Alan Cox
2004-09-20 22:03                 ` Florian Weimer
2004-09-20 23:12                   ` Alan Cox
     [not found] <029201c498d8$dff156f0$0300a8c0@s>
2004-09-12 15:45 ` Wolfpaw - Dale Corse
2004-09-12 16:47   ` Petri Kaukasoina
2004-09-12 17:59   ` Willy Tarreau
2004-09-12 17:17     ` Alan Cox
2004-09-12 18:18     ` Willy Tarreau

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