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edgeos

Vulnerability Development: Re: "Moving" Stack: my poor return address!

Re: "Moving" Stack: my poor return address!

From: Jon Erickson <matrix_at_phiral.com>
Date: Tue, 1 Aug 2006 16:00:47 -0700

On Mon, Jul 31, 2006 at 10:03:33PM -0400, Jack C wrote:
>
> I'm running on Fedora 5. Is this a security thing that's new in the past
> 2 years or so since I've coded one of these? Is there any way I can
> either (1) make the stack sit still so I can point into it or (2) find
> out where it is during execution?

Assuming you're using a 2.6.11+ kernel, stack space is randomized by
default. You can turn it off by doing:
echo 0 > /proc/sys/kernel/randomize_va_space
Received on Aug 02 2006

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