linux-kernel - Re: [PATCH] sysctl: terminate strings also on \r

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Message-ID: <alpine.DEB.2.02.1410221549390.28061@chino.kir.corp.google.com>
Date:	Wed, 22 Oct 2014 15:49:48 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Kees Cook <keescook@...omium.org>
cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>, Rik van Riel <riel@...hat.com>,
	Aaron Tomlin <atomlin@...hat.com>,
	Dario Faggioli <raistlin@...ux.it>,
	Andi Kleen <ak@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Jens Axboe <axboe@...com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH] sysctl: terminate strings also on \r

On Tue, 21 Oct 2014, Kees Cook wrote:

> From: Paul Wise <pabs3@...edaddy.net>
> 
> This partially mitigates a common strategy used by attackers for hiding
> the full contents of strings in procfs from naive sysadmins who use cat,
> more or sysctl to inspect the contents of strings in procfs.
> 
> References: http://www.jakoblell.com/blog/2014/05/07/hacking-contest-hiding-stuff-from-the-terminal/
> Signed-off-by: Paul Wise <pabs3@...edaddy.net>
> Signed-off-by: Kees Cook <keescook@...omium.org>

Acked-by: David Rientjes <rientjes@...gle.com>
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