Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 20 Sep 2017 13:18:04 +0200
From: Yann Droneaud <ydroneaud@...eya.com>
To: Solar Designer <solar@...nwall.com>, riel@...hat.com
Cc: linux-kernel@...r.kernel.org, danielmicay@...il.com, tytso@....edu, 
 keescook@...omium.org, hpa@...or.com, luto@...capital.net,
 mingo@...nel.org,  x86@...nel.org, linux-arm-kernel@...ts.infradead.org,
 catalin.marinas@....com,  linux-sh@...r.kernel.org,
 ysato@...rs.sourceforge.jp,  kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH v2 0/5] stackprotector: ascii armor
 the stack canary

Hi,

Le mardi 19 septembre 2017 à 19:16 +0200, Solar Designer a écrit :
>
> We could put/require a NUL in the middle of the canary,
> but with the full canary being only 64-bit at most that would also
> make some attacks easier.
> 

Are you suggesting to randomly select which byte to set to 0 in each
canary ?

Regards.

-- 
Yann Droneaud
OPTEYA

Powered by blists - more mailing lists

Your e-mail address:

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.