--- /dev/null
+From 92a373a6dbb1c7cd7c9824167aac232f3e0daebd Mon Sep 17 00:00:00 2001
+From: Jacek Bukarewicz <j.bukarewicz@samsung.com>
+Date: Tue, 23 Jun 2015 11:08:48 +0200
+Subject: [PATCH 5/5] Perform Cynara runtime policy checks by default
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This change introduces http://tizen.org/privilege/internal/dbus privilege
+which is supposed to be available only to trusted system resources.
+Checks for this privilege are used in place of certain allow rules to
+make security policy more strict.
+
+For system bus sending and receiving signals now requires
+http://tizen.org/privilege/internal/dbus privilege. Requesting name
+ownership and sending methods is still denied by default.
+
+For session bus http://tizen.org/privilege/internal/dbus privilege
+is now required for requesting name, calling methods, sending and receiving
+signals.
+
+Services are supposed to override these default settings to implement their
+own security policy.
+
+Change-Id: Ifb4a160bf6e0638404e0295a2e4fa3077efd881c
+Signed-off-by: Jacek Bukarewicz <j.bukarewicz@samsung.com>
+
+Cherry picked from e8610297cf7031e94eb314a2e8c11246f4405403 by Jose Bollo
+Signed-off-by: José Bollo <jose.bollo@iot.bzh>
+---
+ bus/session.conf.in | 32 ++++++++++++++++++++++++++------
+ bus/system.conf.in | 19 +++++++++++++++----
+ 2 files changed, 41 insertions(+), 10 deletions(-)
+
+diff --git a/bus/session.conf.in b/bus/session.conf.in
+index affa7f1d..157dfb4d 100644
+--- a/bus/session.conf.in
++++ b/bus/session.conf.in
+@@ -27,12 +27,32 @@
+ <standard_session_servicedirs />
+
+ <policy context="default">
+- <!-- Allow everything to be sent -->
+- <allow send_destination="*" eavesdrop="true"/>
+- <!-- Allow everything to be received -->
+- <allow eavesdrop="true"/>
+- <!-- Allow anyone to own anything -->
+- <allow own="*"/>
++ <!-- By default clients require internal/dbus privilege to communicate
++ with D-Bus services and to claim name ownership. This is internal privilege that
++ is only accessible to trusted system services -->
++ <check own="*" privilege="http://tizen.org/privilege/internal/dbus" />
++ <check send_type="method_call" privilege="http://tizen.org/privilege/internal/dbus" />
++ <check send_type="signal" privilege="http://tizen.org/privilege/internal/dbus" />
++ <check receive_type="signal" privilege="http://tizen.org/privilege/internal/dbus" />
++
++ <!-- Reply messages (method returns, errors) are allowed
++ by default -->
++ <allow send_requested_reply="true" send_type="method_return"/>
++ <allow send_requested_reply="true" send_type="error"/>
++
++ <!-- All messages but signals may be received by default -->
++ <allow receive_type="method_call"/>
++ <allow receive_type="method_return"/>
++ <allow receive_type="error"/>
++
++ <!-- Allow anyone to talk to the message bus -->
++ <allow send_destination="org.freedesktop.DBus"/>
++ <allow receive_sender="org.freedesktop.DBus"/>
++
++ <!-- But disallow some specific bus services -->
++ <deny send_destination="org.freedesktop.DBus"
++ send_interface="org.freedesktop.DBus"
++ send_member="UpdateActivationEnvironment"/>
+ </policy>
+
+ <!-- Include legacy configuration location -->
+diff --git a/bus/system.conf.in b/bus/system.conf.in
+index 014f67ee..ebbd468a 100644
+--- a/bus/system.conf.in
++++ b/bus/system.conf.in
+@@ -50,23 +50,34 @@
+ <deny own="*"/>
+ <deny send_type="method_call"/>
+
+- <!-- Signals and reply messages (method returns, errors) are allowed
++ <!-- By default clients require internal/dbus privilege to send and receive signaks.
++ This is internal privilege that is only accessible to trusted system services -->
++ <check send_type="signal" privilege="http://tizen.org/privilege/internal/dbus" />
++ <check receive_type="signal" privilege="http://tizen.org/privilege/internal/dbus" />
++
++ <!-- Reply messages (method returns, errors) are allowed
+ by default -->
+- <allow send_type="signal"/>
+ <allow send_requested_reply="true" send_type="method_return"/>
+ <allow send_requested_reply="true" send_type="error"/>
+
+- <!-- All messages may be received by default -->
++ <!-- All messages but signals may be received by default -->
+ <allow receive_type="method_call"/>
+ <allow receive_type="method_return"/>
+ <allow receive_type="error"/>
+- <allow receive_type="signal"/>
+
+ <!-- Allow anyone to talk to the message bus -->
+ <allow send_destination="org.freedesktop.DBus"
+ send_interface="org.freedesktop.DBus" />
+ <allow send_destination="org.freedesktop.DBus"
+ send_interface="org.freedesktop.DBus.Introspectable"/>
++ <!-- If there is a need specific bus services could be protected by Cynara as well.
++ However, this can lead to deadlock during the boot process when such check is made and
++ Cynara is not yet activated (systemd calls protected method synchronously,
++ dbus daemon tries to consult Cynara, Cynara waits for systemd activation).
++ Therefore it is advised to allow root processes to use bus services.
++ Currently anyone is allowed to talk to the message bus -->
++ <allow receive_sender="org.freedesktop.DBus"/>
++
+ <!-- But disallow some specific bus services -->
+ <deny send_destination="org.freedesktop.DBus"
+ send_interface="org.freedesktop.DBus"
+--
+2.14.3
+
Code Review / AGL / meta-agl.git / blobdiff