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From: "Bjørn Ruberg" <bjorn@ruberg.no>
To: Nick Drage <nickd@metastasis.org.uk>
Cc: netfilter@lists.netfilter.org
Subject: Re: opening port for SSH
Date: Wed, 14 Dec 2005 23:06:25 +0100	[thread overview]
Message-ID: <43A09761.8050400@ruberg.no> (raw)
In-Reply-To: <20051214203623.GF21572@metastasis.org.uk>

Nick Drage wrote:
> On Wed, Dec 14, 2005 at 06:39:26 +0100, Bjørn Ruberg wrote:

[...]

> In order to bind to the correct port wouldn't the existing SSHD process
> need to be killed?  Or at least redirected to listen on another port so
> the "shady" process could act as an intermediary.  For that to happen
> wouldn't the attacker need root privileges anyway?

There are several ways to escalate privileges, most of which are not 
netfilter related.

The point I was trying to make is that important services should not be 
told to listen to ports above 1024.

-- 
Bjørn



  reply	other threads:[~2005-12-14 22:06 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-08 13:43 opening port for SSH Edwin Kapauni
2005-12-08 14:23 ` /dev/rob0
2005-12-09 14:23 ` Georgi Alexandrov
2005-12-09 14:42   ` myhapwcforever
2005-12-09 15:37     ` Georgi Alexandrov
2005-12-14 16:02       ` Edwin Kapauni
2005-12-14 17:28         ` Rob Sterenborg
2005-12-14 17:39           ` Bjørn Ruberg
2005-12-14 20:36             ` Nick Drage
2005-12-14 22:06               ` Bjørn Ruberg [this message]
2005-12-14 20:46             ` Georgi Alexandrov
2005-12-10 14:43   ` myhapwcforever

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