linux-kernel - Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking

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Message-ID: <20101107121235.GA6221@elte.hu>
Date:	Sun, 7 Nov 2010 13:12:35 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Willy Tarreau <w@....eu>
Cc:	Marcus Meissner <meissner@...e.de>, security@...nel.org,
	mort@....com, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	fweisbec@...il.com, "H. Peter Anvin" <hpa@...or.com>,
	linux-kernel@...r.kernel.org, jason.wessel@...driver.com,
	tj@...nel.org, Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 400 to
 reduce ease of attacking


* Willy Tarreau <w@....eu> wrote:

> [...]
>
> It's precisely because you're making a special case of the security bug that you 
> want to hide bugs from user-space by cheating on version.

You claimed this for the second time and i'm denying it for the second time.

The goal of fuzzing the version inforation is _not_ to 'hide bugs from user-space by 
cheating on version'. The goal is to introduce uncertainty to attackers, so that a 
honeypot silent alarm can warn the admin.

Why are you putting words in my mouth?

Thanks,

	Ingo
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