./a.out does not segfault once you have compiled it with "-z noexecstack",
then page permissions are not being enforced.
-Original Message-
From: Goswin von Brederlow
To: Brchk05
Cc: debian-security@lists.debian.org
Sent: Wed, Oct 13, 2010 4:46 am
Subject: Re: non-executable
It's a 32-bit kernel and probably does not have PAE support enabled so I think
the mystery has been solved. Thanks to everyone for your help.
-Original Message-
From: Kees Cook
To: Brchk05
Cc: debian-security@lists.debian.org
Sent: Sun, Oct 10, 2010 1:40 pm
Subject: Re
: Re: non-executable stack (via PT_GNU_STACK) not being enforced
--On Sunday, October 10, 2010 9:53 AM -0400 Brchk05 wrote:
>
>
>
> I am running Debian 2.6.26-21lenny4 and I am puzzled by an issue with the
> enforcement of page permissions. I have written a simple program
Hi Wade,
Thanks for your response. Shellcode is native machine code. It is not shell
script code. See http://en.wikipedia.org/wiki/Shellcode
-Original Message-
From: Wade Richards
To: Brchk05
Cc: debian-security@lists.debian.org
Sent: Sun, Oct 10, 2010 11:59 am
Subject: Re
support enforcement (or is that part
Ubuntu specific). Does this sound plausible?
-Original Message-
From: Kees Cook
To: Brchk05
Cc: debian-security@lists.debian.org
Sent: Sun, Oct 10, 2010 12:07 pm
Subject: Re: non-executable stack (via PT_GNU_STACK) not being enforced
Hi,
On Sun, Oct
I am running Debian 2.6.26-21lenny4 and I am puzzled by an issue with the
enforcement of page permissions. I have written a simple program with a basic
buffer overflow and compiled two versions using gcc: one with -z execstack and
another with -z noexecstack.
So, to verify that the optio
6 matches
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