Re: [Resend] [PATCH 0/2] procfs: make /proc/*/{stack,syscall,pagemap} 0400

From: Kees Cook
Date: Mon Dec 16 2013 - 12:36:35 EST


On Sun, Dec 15, 2013 at 10:57 AM, Djalal Harouni <tixxdz@xxxxxxxxxx> wrote:
> The following patches make /proc/*/{stack,syscall,personality,pagemap}
> 0400.

Yes, please! This greatly reduces the scope of the leak problem (with
0400 the leak is possible only if an attacker can spawn the target
setuid process, instead of being able to leak from an already running
one).

-Kees

--
Kees Cook
Chrome OS Security
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