From: Joshua Brindle <brindle@quarksecurity.com>
To: Paul Moore <paul@paul-moore.com>
Cc: "Luis R. Rodriguez" <mcgrof@suse.com>,
"Takashi Iwai" <tiwai@suse.de>,
"Ming Lei" <ming.lei@canonical.com>,
"David Howells" <dhowells@redhat.com>,
"Peter Jones" <pjones@redhat.com>,
"selinux@tycho.nsa.gov" <selinux@tycho.nsa.gov>,
"Schaufler, Casey" <casey.schaufler@intel.com>,
"Stephen Smalley" <sds@tycho.nsa.gov>,
"Matthew Garrett" <mjg59@srcf.ucam.org>,
"Kees Cook" <keescook@chromium.org>,
"Vojtech Pavlík" <vojtech@suse.com>,
"Seth Forshee" <seth.forshee@canonical.com>,
"james.l.morris@oracle.com" <james.l.morris@oracle.com>,
"Dmitry Kasatkin" <dmitry.kasatkin@gmail.com>,
"Johannes Berg" <johannes@sipsolutions.net>,
"Joey Lee" <jlee@suse.de>, "Kyle McMartin" <kyle@kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Andy Lutomirski" <luto@amacapital.net>,
"linux-security-module@vger.kernel.org"
<linux-security-module@vger.kernel.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Vitaly Kuznetsov" <vkuznets@redhat.com>,
"David Woodhouse" <dwmw2@infradead.org>
Subject: Re: Linux Firmware Signing
Date: Tue, 01 Sep 2015 10:12:39 -0400 [thread overview]
Message-ID: <55E5B257.6070205@quarksecurity.com> (raw)
In-Reply-To: <CAHC9VhTTRr7N2bqU-7jm2oG72t5wgqH_SmXk4icqs3h3_=EMzg@mail.gmail.com>
Paul Moore wrote:
<snip>
>
> Yes, there are lots of way we could solve the signed policy format
> issue, I just don't have one in mind at this moment. Also, to be
> honest, there are enough limitations to signing SELinux policies that
> this isn't very high onmy personal SELinux priority list.
>
The fact that there are so many userspace specific parts of the policy
that never make it into the kernel precludes any meaningful verification
anyway.
And SELinux already has a mechanism for raising the integrity of a
process to do things like signature checking in userspace, the domain
transition. If someone wants validation of the SELinux policy they just
need to eliminate every domains ability to load policy except for a
trusted policy loader that does signature checking.
next prev parent reply other threads:[~2015-09-01 14:12 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20150824210234.GI8051@wotan.suse.de>
[not found] ` <476DC76E7D1DF2438D32BFADF679FC5601057D32@ORSMSX103.amr.corp.intel.com>
[not found] ` <20150824225713.GJ8051@wotan.suse.de>
[not found] ` <CAGXu5jLDHCgygaVNHpuvszN6SXNKAjRW83q3-D2ZfRpO4uAmdw@mail.gmail.com>
[not found] ` <476DC76E7D1DF2438D32BFADF679FC5601058E78@ORSMSX103.amr.corp.intel.com>
[not found] ` <CAGXu5jJuwPfnQhu9u4-90UkmjWTBF_GLpJ7J1VaaT2D0d_-Mhg@mail.gmail.com>
[not found] ` <1440462367.2737.4.camel@linux.vnet.ibm.com>
[not found] ` <CALCETrXWBBdOKz-fSdM7YVu_sWQbA3YsHPeZAkRmtj+eawqZGQ@mail.gmail.com>
[not found] ` <1440464705.2737.36.camel@linux.vnet.ibm.com>
[not found] ` <14540.1440599584@warthog.procyon.org.uk>
2015-08-26 23:26 ` Linux Firmware Signing Luis R. Rodriguez
2015-08-27 2:35 ` Paul Moore
2015-08-27 19:36 ` Luis R. Rodriguez
2015-08-27 23:46 ` Paul Moore
2015-08-27 10:38 ` David Howells
2015-08-27 10:57 ` David Woodhouse
2015-08-27 11:07 ` David Woodhouse
2015-08-27 21:29 ` Luis R. Rodriguez
2015-08-27 23:54 ` Mimi Zohar
2015-08-29 2:16 ` Luis R. Rodriguez
2015-08-31 14:18 ` Mimi Zohar
2015-08-31 16:05 ` David Woodhouse
2015-08-31 16:45 ` Mimi Zohar
2015-09-02 0:00 ` Luis R. Rodriguez
2015-09-01 23:43 ` Luis R. Rodriguez
2015-09-02 3:08 ` Kees Cook
2015-09-02 3:44 ` Mimi Zohar
2015-09-02 15:28 ` Kees Cook
2015-09-02 16:45 ` Mimi Zohar
2015-09-02 17:36 ` Austin S Hemmelgarn
2015-09-02 23:54 ` Mimi Zohar
2015-09-03 0:18 ` Luis R. Rodriguez
2015-08-27 23:56 ` Paul Moore
2015-08-28 11:20 ` Roberts, William C
2015-08-28 11:20 ` Roberts, William C
2015-08-28 11:20 ` Roberts, William C
2015-08-28 22:26 ` Paul Moore
2015-08-29 2:03 ` Luis R. Rodriguez
2015-09-01 2:52 ` Paul Moore
2015-09-01 14:12 ` Joshua Brindle [this message]
2015-09-01 20:08 ` Roberts, William C
2015-09-01 20:46 ` Joshua Brindle
2015-09-01 22:17 ` William Roberts
2015-09-01 22:21 ` Eric Paris
2015-08-29 1:56 ` Luis R. Rodriguez
2015-09-01 20:20 ` Kees Cook
2015-09-02 0:09 ` Luis R. Rodriguez
2015-09-02 3:35 ` Mimi Zohar
2015-09-02 18:46 ` Luis R. Rodriguez
2015-09-02 20:54 ` Kees Cook
2015-09-02 21:37 ` Luis R. Rodriguez
2015-09-03 21:14 ` Kees Cook
2015-09-30 20:34 ` Luis R. Rodriguez
2015-09-03 0:05 ` Mimi Zohar
2015-09-03 0:29 ` Luis R. Rodriguez
2015-09-03 3:00 ` Mimi Zohar
2015-08-27 19:37 ` Luis R. Rodriguez
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