/etc/apparmor.d/abstractions/dbus is in apparmor 2.10.95-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | # vim:syntax=apparmor
# ------------------------------------------------------------------
#
# Copyright (C) 2009-2013 Canonical Ltd.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
# This abstraction grants full system bus access. Consider using the
# dbus-strict abstraction for fine-grained bus mediation.
#include <abstractions/dbus-strict>
dbus bus=system,
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