From: Paul Moore <paul@paul-moore.com>
To: Richard Guy Briggs <rgb@redhat.com>
Cc: nhorman@tuxdriver.com, linux-api@vger.kernel.org,
containers@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
dhowells@redhat.com, linux-audit@redhat.com,
netfilter-devel@vger.kernel.org, ebiederm@xmission.com,
simo@redhat.com, netdev@vger.kernel.org,
linux-fsdevel@vger.kernel.org, Eric Paris <eparis@parisplace.org>,
mpatel@redhat.com, Serge Hallyn <serge@hallyn.com>
Subject: Re: [PATCH ghak90 V8 07/16] audit: add contid support for signalling the audit daemon
Date: Fri, 13 Mar 2020 12:29:10 -0400 [thread overview]
Message-ID: <CAHC9VhQoVOzy_b9W6h+kmizKr1rPkC4cy5aYoKT2i0ZgsceNDg@mail.gmail.com> (raw)
In-Reply-To: <20200312193037.2tb5f53yeisfq4ta@madcap2.tricolour.ca>
On Thu, Mar 12, 2020 at 3:30 PM Richard Guy Briggs <rgb@redhat.com> wrote:
> On 2020-02-13 16:44, Paul Moore wrote:
> > This is a bit of a thread-hijack, and for that I apologize, but
> > another thought crossed my mind while thinking about this issue
> > further ... Once we support multiple auditd instances, including the
> > necessary record routing and duplication/multiple-sends (the host
> > always sees *everything*), we will likely need to find a way to "trim"
> > the audit container ID (ACID) lists we send in the records. The
> > auditd instance running on the host/initns will always see everything,
> > so it will want the full container ACID list; however an auditd
> > instance running inside a container really should only see the ACIDs
> > of any child containers.
>
> Agreed. This should be easy to check and limit, preventing an auditd
> from seeing any contid that is a parent of its own contid.
>
> > For example, imagine a system where the host has containers 1 and 2,
> > each running an auditd instance. Inside container 1 there are
> > containers A and B. Inside container 2 there are containers Y and Z.
> > If an audit event is generated in container Z, I would expect the
> > host's auditd to see a ACID list of "1,Z" but container 1's auditd
> > should only see an ACID list of "Z". The auditd running in container
> > 2 should not see the record at all (that will be relatively
> > straightforward). Does that make sense? Do we have the record
> > formats properly designed to handle this without too much problem (I'm
> > not entirely sure we do)?
>
> I completely agree and I believe we have record formats that are able to
> handle this already.
I'm not convinced we do. What about the cases where we have a field
with a list of audit container IDs? How do we handle that?
--
paul moore
www.paul-moore.com
--
Linux-audit mailing list
Linux-audit@redhat.com
https://www.redhat.com/mailman/listinfo/linux-audit
next prev parent reply other threads:[~2020-03-13 16:29 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-31 19:48 [PATCH ghak90 V8 00/16] audit: implement container identifier Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 01/16] audit: collect audit task parameters Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 02/16] audit: add container id Richard Guy Briggs
[not found] ` <70ad50e69185c50843d5e14462f1c4f03655d503.1577736799.git.rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2020-01-22 21:28 ` Paul Moore
2020-01-30 17:53 ` Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 03/16] audit: read container ID of a process Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 04/16] audit: convert to contid list to check for orch/engine ownership Richard Guy Briggs
[not found] ` <a911acf0b209c05dc156fb6b57f9da45778747ce.1577736799.git.rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2020-01-22 21:28 ` Paul Moore
2020-02-04 22:51 ` Richard Guy Briggs
[not found] ` <20200204225148.io3ayosk4efz2qii-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2020-02-05 22:40 ` Paul Moore
2019-12-31 19:48 ` [PATCH ghak90 V8 05/16] audit: log drop of contid on exit of last task Richard Guy Briggs
2020-01-22 21:28 ` Paul Moore
[not found] ` <CAHC9VhQ=+4P6Rr1S1-sNb2X-CbYYKMQMJDGP=bBr8GG3xLD8qQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-02-04 23:02 ` Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 06/16] audit: log container info of syscalls Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 07/16] audit: add contid support for signalling the audit daemon Richard Guy Briggs
[not found] ` <7d7933d742fdf4a94c84b791906a450b16f2e81f.1577736799.git.rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2020-01-22 21:28 ` Paul Moore
2020-01-23 16:29 ` Richard Guy Briggs
2020-01-23 17:09 ` Paul Moore
2020-01-23 20:04 ` Richard Guy Briggs
2020-01-23 21:35 ` Paul Moore
2020-02-04 23:14 ` Richard Guy Briggs
[not found] ` <20200204231454.oxa7pyvuxbj466fj-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2020-02-05 22:50 ` Paul Moore
2020-02-12 22:38 ` Steve Grubb
2020-02-13 0:09 ` Paul Moore
2020-02-13 21:44 ` Paul Moore
2020-03-12 19:30 ` Richard Guy Briggs
2020-03-13 16:29 ` Paul Moore [this message]
2020-03-13 18:59 ` Richard Guy Briggs
2020-03-18 20:56 ` Paul Moore
2020-03-18 21:26 ` Richard Guy Briggs
2020-03-18 21:42 ` Paul Moore
2020-03-18 21:55 ` Richard Guy Briggs
2020-03-18 22:06 ` Paul Moore
2020-03-19 22:02 ` Richard Guy Briggs
2020-03-24 0:16 ` Paul Moore
2020-03-24 21:01 ` Richard Guy Briggs
2020-03-29 3:11 ` Paul Moore
2020-03-30 13:47 ` Richard Guy Briggs
2020-03-30 14:26 ` Paul Moore
2020-03-30 16:21 ` Richard Guy Briggs
2020-03-30 17:34 ` Paul Moore
2020-03-30 17:49 ` Richard Guy Briggs
2020-03-30 19:55 ` Paul Moore
2020-04-16 20:33 ` Eric W. Biederman
2020-04-16 21:53 ` Paul Moore
2020-04-17 22:23 ` Eric W. Biederman
2020-04-22 17:24 ` Paul Moore
2020-06-08 18:03 ` Richard Guy Briggs
2020-06-17 21:33 ` Paul Moore
2020-06-19 15:22 ` Richard Guy Briggs
2020-03-12 20:27 ` Richard Guy Briggs
2020-03-13 16:42 ` Paul Moore
2020-03-13 16:45 ` Steve Grubb
2020-03-13 16:49 ` Paul Moore
2020-03-13 19:23 ` Richard Guy Briggs
2020-03-18 21:01 ` Paul Moore
2020-03-18 21:41 ` Richard Guy Briggs
2020-03-18 21:47 ` Paul Moore
2020-03-19 21:47 ` Richard Guy Briggs
2020-03-20 21:56 ` Paul Moore
2020-03-25 12:29 ` Richard Guy Briggs
2020-03-29 3:17 ` Paul Moore
2020-03-30 15:23 ` Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 08/16] audit: add support for non-syscall auxiliary records Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 09/16] audit: add containerid support for user records Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 10/16] audit: add containerid filtering Richard Guy Briggs
2019-12-31 19:48 ` [PATCH ghak90 V8 11/16] audit: add support for containerid to network namespaces Richard Guy Briggs
2020-01-22 21:28 ` Paul Moore
2020-02-04 23:42 ` Richard Guy Briggs
2020-02-05 22:51 ` Paul Moore
2019-12-31 19:48 ` [PATCH ghak90 V8 12/16] audit: contid check descendancy and nesting Richard Guy Briggs
[not found] ` <cfbb80a08fc770dd0dcf6dac6ff307a80d877c3f.1577736799.git.rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2020-01-22 21:29 ` Paul Moore
2020-01-23 21:02 ` Richard Guy Briggs
2020-01-23 21:47 ` Paul Moore
2019-12-31 19:48 ` [PATCH ghak90 V8 13/16] audit: track container nesting Richard Guy Briggs
2020-01-22 21:29 ` Paul Moore
2020-01-30 19:27 ` Richard Guy Briggs
2020-02-05 23:05 ` Paul Moore
2020-02-05 23:50 ` Richard Guy Briggs
2020-02-13 21:49 ` Paul Moore
2020-03-12 20:51 ` Richard Guy Briggs
2020-03-13 16:47 ` Paul Moore
2020-03-14 22:42 ` Richard Guy Briggs
2020-03-17 18:28 ` Richard Guy Briggs
2020-03-18 21:08 ` Paul Moore
2020-01-31 14:50 ` Steve Grubb
2020-02-04 13:19 ` Richard Guy Briggs
[not found] ` <20200204131944.esnzcqvnecfnqgbi-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2020-02-04 15:47 ` Steve Grubb
2020-02-04 15:52 ` Paul Moore
2020-02-04 18:12 ` Steve Grubb
2020-02-05 22:57 ` Paul Moore
2019-12-31 19:48 ` [PATCH ghak90 V8 14/16] audit: check contid depth and add limit config param Richard Guy Briggs
2020-01-22 21:29 ` Paul Moore
2019-12-31 19:48 ` [PATCH ghak90 V8 15/16] audit: check contid count per netns and add config param limit Richard Guy Briggs
2020-01-22 21:29 ` Paul Moore
2019-12-31 19:48 ` [PATCH ghak90 V8 16/16] audit: add capcontid to set contid outside init_user_ns Richard Guy Briggs
2020-01-22 21:29 ` Paul Moore
2020-02-05 0:39 ` Richard Guy Briggs
2020-02-05 22:56 ` Paul Moore
2020-02-06 12:51 ` Richard Guy Briggs
[not found] ` <20200206125135.u4dmybkmvxfgui2b-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2020-02-13 21:58 ` Paul Moore
2020-03-12 21:58 ` Richard Guy Briggs
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