Date: Sun, 13 Feb 2000 23:22:58 +0100 From: Harold Gutch <logix@foobar.franken.de> To: Dru Nelson <dru@egroups.net>, freebsd-hackers@FreeBSD.ORG Subject: Re: sysctl for stack execute? Message-ID: <20000213232258.A16994@foobar.franken.de> In-Reply-To: <38A7224A.580D21BE@egroups.net>; from Dru Nelson on Sun, Feb 13, 2000 at 01:29:46PM -0800 References: <38A7224A.580D21BE@egroups.net>
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On Sun, Feb 13, 2000 at 01:29:46PM -0800, Dru Nelson wrote:
>
> Is there a sysctl for FreeBSD which prevents execution in
> the stack segment? (ie. to prevent attacks from getting root)
> I'm using 3.4R.
Atsuo Ohki sent a mail to -hackers on Feb 05 with a kernel-patch
doing exactly this.
The subject of the mail was "some guard against stack overflow
attack". There were some problems with it though, like it
breaking KLDs (read the reply by Matt Dillon).
bye,
Harold
--
Someone should do a study to find out how many human life spans have
been lost waiting for NT to reboot.
Ken Deboy on Dec 24 1999 in comp.unix.bsd.freebsd.misc
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