full-disclosure - Registration Weakness in Linux Kernel's Binary formats

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Message-Id: <1159900328.2855.29.camel@goku.staff.locallan>
Date: Tue, 03 Oct 2006 18:32:08 +0000
From: SHELLCODE Security Research <GoodFellas@...llcode.com.ar>
To: undisclosed-recipients: ;
Subject: Registration Weakness in Linux Kernel's Binary formats

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.

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

regards,
--
SHELLCODE Security Research TEAM
GoodFellas@...llcode.com.ar
http://www.shellcode.com.ar

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