From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Cc: linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC 2/2] initramfs with digital signature protection
Date: Tue, 5 Feb 2013 18:30:08 +0000 [thread overview]
Message-ID: <20130205183008.GA14451@srcf.ucam.org> (raw)
In-Reply-To: <20130205181926.GA13942@srcf.ucam.org>
On Tue, Feb 05, 2013 at 06:19:26PM +0000, Matthew Garrett wrote:
> On Tue, Feb 05, 2013 at 02:34:50PM +0200, Dmitry Kasatkin wrote:
>
> > Digitally signed initramfs can be used to provide protected user-space
> > environment for initialization purpose. For example, LSM, IMA/EVM can be
> > securely initialized using such approach.
>
> What stops an attacker from simply removing the signed image from the
> initramfs and running modified versions of the same tools from the
> unsigned image?
I'm sorry, ignore that - if the kernel's configured to do this, it'll
panic if it can't find the signed image. Ok.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2013-02-05 18:30 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-05 12:34 [RFC 0/2] initramfs with digital signature protection Dmitry Kasatkin
2013-02-05 12:34 ` [RFC 1/2] export unpack_to_rootfs Dmitry Kasatkin
2013-02-05 16:48 ` Peter Jones
2013-02-05 17:16 ` Kasatkin, Dmitry
2013-02-08 8:30 ` Kasatkin, Dmitry
2013-02-05 12:34 ` [RFC 2/2] initramfs with digital signature protection Dmitry Kasatkin
2013-02-05 18:03 ` Peter Jones
2013-02-05 20:08 ` Mimi Zohar
2013-02-05 22:03 ` Kasatkin, Dmitry
2013-02-05 18:19 ` Matthew Garrett
2013-02-05 18:30 ` Matthew Garrett [this message]
2013-02-05 18:34 ` Vivek Goyal
2013-02-05 21:55 ` Kasatkin, Dmitry
2013-04-05 13:50 ` Vivek Goyal
2013-04-08 19:43 ` Mimi Zohar
2013-04-08 20:09 ` Vivek Goyal
2013-04-08 20:17 ` Josh Boyer
2013-04-09 14:38 ` Vivek Goyal
2013-04-10 3:07 ` Mimi Zohar
2013-04-10 19:42 ` Vivek Goyal
2013-04-10 21:05 ` Mimi Zohar
2013-04-11 8:08 ` Dmitry Kasatkin
2013-04-11 14:52 ` Vivek Goyal
2013-04-12 11:54 ` Mimi Zohar
[not found] ` <CACE9dm-GZpjco8u6jNxLQpYA8LYSeoVjsyyRXVwxXHzjO-LvGw@mail.gmail.com>
2013-04-11 14:55 ` Vivek Goyal
2013-04-11 18:42 ` Dmitry Kasatkin
2013-04-11 21:13 ` Vivek Goyal
2013-04-12 12:03 ` Mimi Zohar
2013-02-05 20:36 ` Peter Jones
2013-02-05 22:09 ` Kasatkin, Dmitry
2013-02-06 5:04 ` H. Peter Anvin
2013-02-06 8:01 ` Kasatkin, Dmitry
2013-02-06 16:41 ` H. Peter Anvin
2013-02-08 9:16 ` Kasatkin, Dmitry
2013-02-08 15:49 ` H. Peter Anvin
2013-02-08 16:24 ` Kasatkin, Dmitry
2013-02-08 16:50 ` H. Peter Anvin
2013-02-07 17:05 ` Vivek Goyal
2013-02-08 8:34 ` Kasatkin, Dmitry
2013-02-08 13:27 ` Kasatkin, Dmitry
2013-02-11 21:59 ` Vivek Goyal
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