From: Jesse Pollard <pollard@tomcat.admin.navo.hpc.mil>
To: rmk@arm.linux.org.uk, Jesse Pollard <jesse@cats-chateau.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Disturbing news..
Date: Wed, 28 Mar 2001 08:43:01 -0600 (CST) [thread overview]
Message-ID: <200103281443.IAA42752@tomcat.admin.navo.hpc.mil> (raw)
--------- Received message begins Here ---------
>
> On Wed, Mar 28, 2001 at 06:08:15AM -0600, Jesse Pollard wrote:
> > Sure - very simple. If the execute bit is set on a file, don't allow
> > ANY write to the file. This does modify the permission bits slightly
> > but I don't think it is an unreasonable thing to have.
>
> Even easier method - remove the write permission bits from all executable
> files, and don't do the unsafe thing of running email/web browsers/other
> user-type stuff as user root.
>
> If it still worries you that root can write to files without the 'w' bit
> set, modify the capabilities of the system to prevent it (there is a bit
> that can be set which will remove this ability for all new processes).
How about just adding MLS ... :-)
-------------------------------------------------------------------------
Jesse I Pollard, II
Email: pollard@navo.hpc.mil
Any opinions expressed are solely my own.
next reply other threads:[~2001-03-28 14:44 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-28 14:43 Jesse Pollard [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-03-29 17:10 Jesse Pollard
2001-03-28 15:51 Jesse Pollard
2001-03-28 15:54 ` rmk
2001-03-28 21:19 ` Gerhard Mack
2001-03-28 15:43 Jesse Pollard
2001-03-28 15:31 Jesse Pollard
2001-03-28 14:40 Jesse Pollard
2001-03-28 15:08 ` Russell King
2001-03-29 12:05 ` Walter Hofmann
2001-03-28 14:15 Jesse Pollard
2001-03-28 14:53 ` Russell King
2001-03-28 5:52 Ideas for the oom problem Jonathan Morton
2001-03-28 6:16 ` Disturbing news Shawn Starr
2001-03-28 7:19 ` Matti Aarnio
2001-03-28 7:27 ` Shawn Starr
2001-03-28 12:08 ` Jesse Pollard
2001-03-28 5:50 ` Ben Ford
2001-03-28 12:50 ` Walter Hofmann
2001-03-28 14:04 ` Simon Williams
2001-03-28 15:04 ` Olivier Galibert
2001-03-28 15:49 ` Simon Williams
2001-03-28 11:57 ` Ben Ford
2001-03-29 8:02 ` Helge Hafting
2001-03-28 17:51 ` Olivier Galibert
2001-03-28 12:53 ` Keith Owens
2001-03-28 13:00 ` Russell King
2001-03-28 14:10 ` Sean Hunter
2001-03-28 15:36 ` john slee
2001-03-28 16:18 ` Jonathan Lundell
2001-04-02 23:10 ` Dr. Kelsey Hudson
2001-03-28 17:29 ` Horst von Brand
2001-03-28 10:00 ` Helge Hafting
2001-03-28 13:25 ` Alexander Viro
2001-03-28 14:32 ` Romano Giannetti
2001-03-28 14:57 ` Bill Rugolsky Jr.
2001-03-28 14:57 ` Alexander Viro
2001-03-28 16:14 ` Romano Giannetti
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