From: =?unknown-8bit?Q?J=F6rn?= Engel <joern@wohnheim.fh-wedel.de>
To: Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>
Cc: linux-kernel@vger.kernel.org, phoebe-list@redhat.com
Subject: Re: Stack growing and buffer overflows
Date: Tue, 11 Mar 2003 13:23:53 +0100 [thread overview]
Message-ID: <20030311122353.GA12274@wohnheim.fh-wedel.de> (raw)
In-Reply-To: <20030310230012.26391.qmail@linuxmail.org>
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On Tue, 11 March 2003 00:00:12 +0100, Felipe Alfaro Solana wrote:
>
> on x86, the stack grows downwards (from higher memory addresses to
> lower memory addresses). This makes buffer overflows attacks easy to
> exploit: if a function uses strcpy() instead of strncpy() to copy
> data [...]
>
> However, what would happen if the stack was implemented to grow
> upwards [...]
Stack overflows by mistake would go unnoticed, bad.
Stakc overflows in order to gain root privileges take only little more
effort, no change.
Nothing gained, something lost.
Jörn
--
Geld macht nicht glücklich.
Glück macht nicht satt.
prev parent reply other threads:[~2003-03-11 12:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-10 23:00 Felipe Alfaro Solana
2003-03-10 23:29 ` Patrick E Kane
2003-03-11 10:07 ` Helge Hafting
2003-03-11 12:23 ` =?unknown-8bit?Q?J=F6rn?= Engel [this message]
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