linux-kernel - Re: Registration Weakness in Linux Kernel's Binary formats

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Date:	Tue, 3 Oct 2006 22:49:10 -0500
From:	Chase Venters <chase.venters@...entec.com>
To:	goodfellas@...llcode.com.ar
Cc:	Linux kernel <linux-kernel@...r.kernel.org>,
	Kyle Moffett <mrmacman_g4@....com>,
	endrazine <endrazine@...il.com>,
	Stephen Hemminger <shemminger@...l.org>,
	Valdis.Kletnieks@...edu, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: Registration Weakness in Linux Kernel's Binary formats

On Tuesday 03 October 2006 14:12, SHELLCODE Security Research wrote:
> Hello,
> The present document aims to demonstrate a design weakness found in the
> handling of simply
> linked   lists   used   to   register   binary   formats   handled   by
> Linux   kernel,   and   affects   all   the   kernel families
> (2.0/2.2/2.4/2.6), allowing the insertion of infection modules in
> kernel space that can be used by malicious users to create infection
> tools, for example rootkits.

Yay, you've been Slashdotted!

Question: Why did you personally submit this to Slashdot when it is absolutely 
clear that the observation is akin to figuring out a process can call fork() 
and exec() and become "/bin/rm" with an argv of "/bin/rm", "-rf", and "*"?

Is this what you call good marketing?

> POC, details and proposed solution at:
> English version: http://www.shellcode.com.ar/docz/binfmt-en.pdf
> Spanish version: http://www.shellcode.com.ar/docz/binfmt-es.pdf
>

Thanks,
Chase
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