From: Jesse Pollard <jesse@cats-chateau.net>
To: "Robert White" <rwhite@casabyte.com>,
"'Ingo Molnar'" <mingo@elte.hu>,
"'Christoph Hellwig'" <hch@infradead.org>,
"'Mike McCormack'" <mike@codeweavers.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: WINE + NX (No eXecute) support for x86, 2.6.7-rc2-bk2
Date: Wed, 9 Jun 2004 11:53:05 -0500 [thread overview]
Message-ID: <04060911530500.08612@tabby> (raw)
In-Reply-To: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA2ZSI4XW+fk25FhAf9BqjtMKAAAAQAAAAWUyJbbFwtUuY/ZGbgGI8TwEAAAAA@casabyte.com>
On Tuesday 08 June 2004 16:50, Robert White wrote:
> I would think that having an easy call to disable the NX modification would
> be both safe and effective. That is, adding a syscall (or whatever) that
> would let you mark your heap and/or stack executable while leaving the new
> default as NX, is "just as safe" as flagging the executable in the first
> place.
ahhhh no.
The first attack against a vulerable server would be to load a string
on the stack that would:
1. have address of the syscall to turn off NX, then return to the stack.
2. have normal worm/virus code following.
next prev parent reply other threads:[~2004-06-09 16:53 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-06 6:09 WINE + NX (No eXecute) support for x86, 2.6.7-rc2-bk2 Mike McCormack
2004-06-06 5:26 ` Ingo Molnar
2004-06-06 8:29 ` Mike McCormack
2004-06-06 7:32 ` Arjan van de Ven
2004-06-08 9:20 ` Jakub Jelinek
2004-06-08 11:15 ` Mike McCormack
2004-06-08 10:32 ` Ingo Molnar
2004-06-08 12:01 ` Mike McCormack
2004-06-09 1:40 ` John Reiser
2004-06-09 2:27 ` Paul Jackson
2004-06-06 7:32 ` Christoph Hellwig
2004-06-06 9:13 ` Mike McCormack
2004-06-06 8:10 ` Christoph Hellwig
2004-06-06 9:37 ` Mike McCormack
2004-06-06 8:39 ` Christoph Hellwig
2004-06-06 8:43 ` Christoph Hellwig
2004-06-06 10:20 ` Mike McCormack
2004-06-06 11:17 ` Felipe Alfaro Solana
2004-06-07 4:20 ` Horst von Brand
2004-06-07 14:19 ` Ingo Molnar
2004-06-08 21:50 ` Robert White
2004-06-08 21:57 ` Robert White
2004-06-09 16:53 ` Jesse Pollard [this message]
2004-06-09 20:53 ` Robert White
2004-06-10 13:35 ` Jesse Pollard
2004-06-10 21:13 ` Robert White
2004-06-11 9:50 ` Marc Bevand
2004-06-09 17:14 ` Jesper Juhl
2004-06-09 18:02 ` Evaldo Gardenali
2004-06-09 19:58 ` Felipe Alfaro Solana
2004-06-10 18:07 ` Stefanos Harhalakis
2004-06-06 11:38 ` David Woodhouse
2004-06-06 15:58 ` Mike McCormack
2004-06-07 8:49 ` David Howells
[not found] <23Y4Y-6F5-1@gated-at.bofh.it>
[not found] ` <240qb-8ir-7@gated-at.bofh.it>
[not found] ` <240Tc-gV-5@gated-at.bofh.it>
[not found] ` <2412S-pU-3@gated-at.bofh.it>
[not found] ` <24vX0-81P-7@gated-at.bofh.it>
2004-06-07 17:40 ` Andi Kleen
2004-06-08 9:42 ` Eric W. Biederman
[not found] ` <24WNz-4pO-3@gated-at.bofh.it>
2004-06-10 18:57 ` Bill Davidsen
2004-06-10 21:33 ` Robert White
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