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Date: Thu, 4 Apr 2013 13:19:21 -0700
Message-ID: <CAKyRK=iZeYv8MPa2tLfRRTmNX2WQsT+t3UAu_wy3uT9TiZokgA@mail.gmail.com>
Subject: Re: [PATCH 3/3] x86: kernel base offset ASLR
From: Julien Tinnes <jln@google.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>, linux-kernel@vger.kernel.org,
        kernel-hardening@lists.openwall.com,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        x86@kernel.org, Jarkko Sakkinen <jarkko.sakkinen@intel.com>,
        Matthew Garrett <mjg@redhat.com>,
        Matt Fleming <matt.fleming@intel.com>,
        Eric Northup <digitaleric@google.com>,
        Dan Rosenberg <drosenberg@vsecurity.com>,
        Will Drewry <wad@chromium.org>
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On Thu, Apr 4, 2013 at 1:12 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> On 04/04/2013 01:07 PM, Kees Cook wrote:
>> However, the benefits of
>> this feature in certain environments exceed the perceived weaknesses[2].
>
> Could you clarify?

I think privilege reduction in general, and sandboxing in particular,
can make KASLR even more useful. A lot of the information leaks can be
mitigated in the same way as attack surface and vulnerabilities can be
mitigated.

Julien
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