From: Andi Kleen <andi@firstfloor.org>
To: Mark Seaborn <mrs@mythic-beasts.com>
Cc: Michael Stone <michael@laptop.org>,
Andi Kleen <andi@firstfloor.org>,
Ulrich Drepper <drepper@gmail.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
linux-security-module@vger.kernel.org, David Lang <david@lang.hm>,
Oliver Hartkopp <socketcan@hartkopp.net>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Herbert Xu <herbert@gondor.apana.org.au>,
Valdis Kletnieks <Valdis.Kletnieks@vt.edu>,
Bryan Donlan <bdonlan@gmail.com>,
Evgeniy Polyakov <zbr@ioremap.net>,
"C. Scott Ananian" <cscott@cscott.net>,
James Morris <jmorris@namei.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Bernie Innocenti <bernie@codewiz.org>
Subject: Re: [PATCH] Security: Add prctl(PR_{GET,SET}_NETWORK) interface.
Date: Thu, 17 Dec 2009 18:14:47 +0100 [thread overview]
Message-ID: <20091217171447.GJ9804@basil.fritz.box> (raw)
In-Reply-To: <fb69ef3c0912170906t291a37c4r6c4758ddc7dd300b@mail.gmail.com>
> This is not very good because in some situations it is useful to disable
> connect() and bind() while still allowing ptracing of other processes. For
> example, Plash creates a new UID for each sandbox and it is possible to use
> strace and gdb inside a sandbox. Currently Plash is not able to block
> network access or allow only limited network access. If you treat ptrace()
> this way we won't have the ability to use strace and gdb while limiting
> network access.
No that's not what the hunk does. I first thought the same. But it actually
just limits these processes from initiating ptracing themselves. You can still
attach gdb/strace to them.
Now I'm not sure if that's closing all holes, but at least I can't come
up with any obvious ones currently. I think I would still prefer a more
general security container in general.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-12-17 17:14 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1260977452-2334-1-git-send-email-michael@laptop.org>
2009-12-16 15:32 ` [PATCH] Security: Add prctl(PR_{GET,SET}_NETWORK) interface Michael Stone
2009-12-16 15:59 ` Andi Kleen
2009-12-17 1:25 ` Michael Stone
2009-12-17 8:52 ` Andi Kleen
[not found] ` <fb69ef3c0912170906t291a37c4r6c4758ddc7dd300b@mail.gmail.com>
2009-12-17 17:14 ` Andi Kleen [this message]
2009-12-17 22:58 ` Mark Seaborn
2009-12-18 3:00 ` Michael Stone
2009-12-18 3:29 ` [PATCH 1/3] Security: Add prctl(PR_{GET,SET}_NETWORK) interface. (v2) Michael Stone
2009-12-18 4:43 ` Valdis.Kletnieks
2009-12-18 15:46 ` Alan Cox
2009-12-18 16:33 ` [PATCH 1/3] Security: Add prctl(PR_{GET,SET}_NETWORK) Michael Stone
2009-12-18 17:20 ` Alan Cox
2009-12-18 17:47 ` Eric W. Biederman
2009-12-24 6:13 ` Michael Stone
2009-12-24 12:37 ` Eric W. Biederman
2009-12-24 1:42 ` [PATCH 0/3] Discarding networking privilege via LSM Michael Stone
2009-12-24 1:44 ` [PATCH 1/3] Security: Add prctl(PR_{GET,SET}_NETWORK) interface. (v3) Michael Stone
2009-12-24 4:38 ` Samir Bellabes
2009-12-24 5:44 ` Michael Stone
2009-12-24 5:51 ` Tetsuo Handa
2009-12-24 1:45 ` [PATCH 2/3] Security: Implement prctl(PR_SET_NETWORK, PR_NETWORK_OFF) semantics. (v3) Michael Stone
2009-12-24 1:45 ` [PATCH 3/3] Security: Document prctl(PR_{GET,SET}_NETWORK). (v3) Michael Stone
2009-12-25 17:09 ` [PATCH 1/3] Security: Add prctl(PR_{GET,SET}_NETWORK) Pavel Machek
2009-12-18 3:31 ` [PATCH 2/3] Security: Implement prctl(PR_SET_NETWORK, PR_NETWORK_OFF) semantics. (v2) Michael Stone
2009-12-18 3:57 ` Eric W. Biederman
2009-12-18 3:32 ` [PATCH 3/3] Security: Document prctl(PR_{GET,SET}_NETWORK). (v2) Michael Stone
2009-12-18 17:49 ` [PATCH] Security: Add prctl(PR_{GET,SET}_NETWORK) interface Stephen Hemminger
2009-12-20 17:53 ` Mark Seaborn
2009-12-17 9:25 ` Américo Wang
2009-12-17 16:28 ` Michael Stone
2009-12-17 17:23 ` Randy Dunlap
2009-12-17 17:25 ` Randy Dunlap
2009-12-16 15:32 ` [PATCH] Security: Implement prctl(PR_SET_NETWORK, PR_NETWORK_OFF) semantics Michael Stone
2009-12-17 19:18 ` Eric W. Biederman
2009-12-16 15:32 ` [PATCH] Security: Document prctl(PR_{GET,SET}_NETWORK) Michael Stone
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