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Date: Fri, 10 Jul 2015 18:26:33 +0200
Message-ID: <CANq1E4Sdpb81PW9Ju+bnRjtZ=9HkGwGse-gstx1SjaEzmWiT-w@mail.gmail.com>
Subject: Re: kdbus: credential faking
From: David Herrmann <dh.herrmann@gmail.com>
To: Casey Schaufler <casey@schaufler-ca.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>, Greg KH <gregkh@linuxfoundation.org>,
        Daniel Mack <daniel@zonque.org>, Djalal Harouni <tixxdz@opendz.org>,
        lkml <linux-kernel@vger.kernel.org>,
        LSM <linux-security-module@vger.kernel.org>,
        Paul Osmialowski <p.osmialowsk@samsung.com>,
        Paul Moore <paul@paul-moore.com>
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Hi

On Fri, Jul 10, 2015 at 5:59 PM, Casey Schaufler <casey@schaufler-ca.com> wrote:
[...]
>                There are so many ways uids are being (miss/ab)used
> on Linux systems these days that the idea of trusting a bus just
> because its non-root uid is listed in a table somewhere (or worse,
> coded in an API) is asking for exploits.

Please elaborate on these possible exploits. I'd also like to hear,
whether the same applies to the already used '/run/user/<uid>/bus',
which follows nearly the same model.

Thanks
David
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