From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Florian Weimer <fw@deneb.enyo.de>
Cc: joeyli <jlee@suse.com>,
linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org, linux-efi@vger.kernel.org,
linux-pm@vger.kernel.org, linux-crypto@vger.kernel.org,
opensuse-kernel@opensuse.org, David Howells <dhowells@redhat.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
Josh Boyer <jwboyer@redhat.com>, Vojtech Pavlik <vojtech@suse.cz>,
Matt Fleming <matt.fleming@intel.com>,
James Bottomley <james.bottomley@hansenpartnership.com>,
Greg KH <gregkh@linuxfoundation.org>,
JKosina@suse.com, Rusty Russell <rusty@rustcorp.com.au>,
Herbert Xu <herbert@gondor.hengli.com.au>,
"David S. Miller" <davem@davemloft.net>,
"H. Peter Anvin" <hpa@zytor.com>, Michal Marek <mmarek@suse.cz>,
Gary Lin <GLin@suse.com>, Vivek Goyal <vgoyal@redhat.com>
Subject: Re: [RFC PATCH 00/18 v3] Signature verification of hibernate snapshot
Date: Sun, 1 Sep 2013 17:04:29 +0100 [thread overview]
Message-ID: <20130901160429.GA1375@srcf.ucam.org> (raw)
In-Reply-To: <87r4d8vn71.fsf@mid.deneb.enyo.de>
On Sun, Sep 01, 2013 at 12:41:22PM +0200, Florian Weimer wrote:
> But if you don't generate fresh keys on every boot, the persistent
> keys are mor exposed to other UEFI applications. Correct me if I'm
> wrong, but I don't think UEFI variables are segregated between
> different UEFI applications, so if anyone gets a generic UEFI variable
> dumper (or setter) signed by the trusted key, this cryptographic
> validation of hibernate snapshots is bypassable.
If anyone can execute arbitrary code in your UEFI environment then
you've already lost.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2013-09-01 16:04 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-22 11:01 [RFC PATCH 00/18 v3] Signature verification of hibernate snapshot Lee, Chun-Yi
2013-08-22 11:01 ` [PATCH 01/18] asymmetric keys: add interface and skeleton for implement signature generation Lee, Chun-Yi
2013-08-22 11:01 ` [PATCH 02/18] asymmetric keys: implement EMSA_PKCS1-v1_5-ENCODE in rsa Lee, Chun-Yi
2013-08-25 15:53 ` Pavel Machek
2013-08-26 10:17 ` joeyli
2013-08-22 11:01 ` [PATCH 03/18] asymmetric keys: separate the length checking of octet string from RSA_I2OSP Lee, Chun-Yi
2013-08-25 16:01 ` Pavel Machek
2013-08-26 10:25 ` joeyli
2013-08-26 11:27 ` Pavel Machek
2013-08-27 8:36 ` Jiri Kosina
2013-08-22 11:01 ` [PATCH 04/18] asymmetric keys: implement OS2IP in rsa Lee, Chun-Yi
2013-08-22 11:01 ` [PATCH 05/18] asymmetric keys: implement RSASP1 Lee, Chun-Yi
2013-08-22 11:01 ` [PATCH 06/18] asymmetric keys: support parsing PKCS #8 private key information Lee, Chun-Yi
2013-08-25 16:10 ` Pavel Machek
2013-08-22 11:01 ` [PATCH 07/18] asymmetric keys: explicitly add the leading zero byte to encoded message Lee, Chun-Yi
2013-08-25 16:13 ` Pavel Machek
2013-08-22 11:01 ` [PATCH 08/18] Secure boot: Add new capability Lee, Chun-Yi
2013-08-25 16:14 ` Pavel Machek
2013-08-22 11:01 ` [PATCH 09/18] Secure boot: Add a dummy kernel parameter that will switch on Secure Boot mode Lee, Chun-Yi
2013-08-25 16:16 ` Pavel Machek
2013-08-22 11:01 ` [PATCH 10/18] efi: Enable secure boot lockdown automatically when enabled in firmware Lee, Chun-Yi
2013-08-25 16:22 ` Pavel Machek
2013-08-25 16:26 ` Matthew Garrett
2013-09-03 10:49 ` Matt Fleming
2013-08-22 11:01 ` [PATCH 11/18] Hibernate: introduced RSA key-pair to verify signature of snapshot Lee, Chun-Yi
2013-08-25 16:25 ` Pavel Machek
2013-08-27 9:04 ` joeyli
2013-08-27 11:29 ` Pavel Machek
2013-08-27 12:01 ` Manfred Hollstein
2013-08-27 14:17 ` Pavel Machek
2013-08-27 13:12 ` joeyli
2013-09-05 8:53 ` Matt Fleming
2013-09-05 10:13 ` joeyli
2013-09-05 10:31 ` Matt Fleming
2013-09-05 13:28 ` joeyli
2013-08-22 11:01 ` [PATCH 12/18] Hibernate: generate and " Lee, Chun-Yi
2013-08-25 16:36 ` Pavel Machek
2013-08-27 3:22 ` joeyli
2013-08-22 11:01 ` [PATCH 13/18] Hibernate: Avoid S4 sign key data included in snapshot image Lee, Chun-Yi
2013-08-25 16:39 ` Pavel Machek
2013-08-27 8:33 ` joeyli
2013-08-22 11:01 ` [PATCH 14/18] Hibernate: applied SNAPSHOT_VERIFICATION config to switch signature check Lee, Chun-Yi
2013-08-22 11:01 ` [PATCH 15/18] Hibernate: adapt to UEFI secure boot with " Lee, Chun-Yi
2013-08-25 16:42 ` Pavel Machek
2013-08-27 10:14 ` joeyli
2013-08-22 11:01 ` [PATCH 16/18] Hibernate: show the verification time for monitor performance Lee, Chun-Yi
2013-08-22 11:01 ` [PATCH 17/18] Hibernate: introduced SNAPSHOT_SIG_HASH config for select hash algorithm Lee, Chun-Yi
2013-08-25 16:43 ` Pavel Machek
2013-08-27 10:22 ` joeyli
2013-08-27 11:30 ` Pavel Machek
2013-08-27 12:54 ` joeyli
2013-08-22 11:01 ` [PATCH 18/18] Hibernate: notify bootloader regenerate key-pair for snapshot verification Lee, Chun-Yi
2013-08-28 21:01 ` [RFC PATCH 00/18 v3] Signature verification of hibernate snapshot Florian Weimer
2013-08-29 0:01 ` joeyli
2013-08-29 21:32 ` Pavel Machek
2013-08-29 22:30 ` joeyli
2013-09-01 10:41 ` Florian Weimer
2013-09-01 16:04 ` Matthew Garrett [this message]
2013-09-01 16:40 ` Florian Weimer
2013-09-01 16:46 ` Matthew Garrett
2013-09-02 2:12 ` joeyli
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