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From:   Lukas Vrabec <lvrabec@redhat.com>
To:     selinux-refpolicy@vger.kernel.org
Cc:     Lukas Vrabec <lvrabec@redhat.com>
Subject: [PATCH] Introduce allow_bluetooth boolean
Date:   Tue, 30 Apr 2019 19:53:29 +0200
Message-Id: <20190430175329.25335-1-lvrabec@redhat.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: selinux-refpolicy-owner@vger.kernel.org
Precedence: bulk

Because of new bluetooth_socket which is part of extended_socket_class
policy capability, it's possible to control which SELinux domains can
use bluetooth wireless technology. Default value of the boolean is
turned off.

Signed-off-by: Lukas Vrabec <lvrabec@redhat.com>
---
 policy/global_tunables               | 7 +++++++
 policy/modules/admin/netutils.te     | 4 ++++
 policy/modules/services/arpwatch.te  | 4 ++++
 policy/modules/services/bluetooth.if | 4 ++++
 policy/modules/services/bluetooth.te | 4 ++++
 policy/modules/services/ntop.te      | 4 ++++
 policy/modules/system/userdomain.if  | 8 ++++++++
 7 files changed, 35 insertions(+)

diff --git a/policy/global_tunables b/policy/global_tunables
index affc020f..69b356e2 100644
--- a/policy/global_tunables
+++ b/policy/global_tunables
@@ -4,6 +4,13 @@
 # file should be used.
 #
 
+## <desc>
+## <p>
+## Allow all system processes and Linux users to use bluetooth wireless technology.
+## </p>
+## </desc>
+gen_tunable(allow_bluetooth,false)
+
 ## <desc>
 ## <p>
 ## Allow unconfined executables to make their heap memory executable.  Doing this is a really bad idea. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla
diff --git a/policy/modules/admin/netutils.te b/policy/modules/admin/netutils.te
index 46560a09..8821b108 100644
--- a/policy/modules/admin/netutils.te
+++ b/policy/modules/admin/netutils.te
@@ -99,6 +99,10 @@ optional_policy(`
 	xen_append_log(netutils_t)
 ')
 
+tunable_policy(`allow_bluetooth',`
+		allow netutils_t self:bluetooth_socket create_stream_socket_perms;
+')
+
 ########################################
 #
 # Ping local policy
diff --git a/policy/modules/services/arpwatch.te b/policy/modules/services/arpwatch.te
index 87aed96f..6f05441a 100644
--- a/policy/modules/services/arpwatch.te
+++ b/policy/modules/services/arpwatch.te
@@ -77,6 +77,10 @@ miscfiles_read_localization(arpwatch_t)
 userdom_dontaudit_search_user_home_dirs(arpwatch_t)
 userdom_dontaudit_use_unpriv_user_fds(arpwatch_t)
 
+tunable_policy(`allow_bluetooth',`
+	allow arpwatch_t self:bluetooth_socket create_socket_perms;
+')
+
 optional_policy(`
 	mta_send_mail(arpwatch_t)
 ')
diff --git a/policy/modules/services/bluetooth.if b/policy/modules/services/bluetooth.if
index dc61988c..9097803f 100644
--- a/policy/modules/services/bluetooth.if
+++ b/policy/modules/services/bluetooth.if
@@ -68,6 +68,10 @@ interface(`bluetooth_stream_connect',`
 	files_search_pids($1)
 	allow $1 bluetooth_t:socket rw_socket_perms;
 	stream_connect_pattern($1, bluetooth_var_run_t, bluetooth_var_run_t, bluetooth_t)
+
+	tunable_policy(`deny_bluetooth',`',`
+		allow $1 bluetooth_t:bluetooth_socket rw_socket_perms;
+	')
 ')
 
 ########################################
diff --git a/policy/modules/services/bluetooth.te b/policy/modules/services/bluetooth.te
index 45e5a361..39af72d5 100644
--- a/policy/modules/services/bluetooth.te
+++ b/policy/modules/services/bluetooth.te
@@ -133,6 +133,10 @@ userdom_dontaudit_use_unpriv_user_fds(bluetooth_t)
 userdom_dontaudit_use_user_terminals(bluetooth_t)
 userdom_dontaudit_search_user_home_dirs(bluetooth_t)
 
+tunable_policy(`allow_bluetooth',`
+	allow bluetooth_t self:bluetooth_socket create_stream_socket_perms;
+')
+
 optional_policy(`
 	dbus_system_bus_client(bluetooth_t)
 	dbus_connect_system_bus(bluetooth_t)
diff --git a/policy/modules/services/ntop.te b/policy/modules/services/ntop.te
index 178bbb1d..537d9323 100644
--- a/policy/modules/services/ntop.te
+++ b/policy/modules/services/ntop.te
@@ -96,6 +96,10 @@ miscfiles_read_localization(ntop_t)
 userdom_dontaudit_use_unpriv_user_fds(ntop_t)
 userdom_dontaudit_search_user_home_dirs(ntop_t)
 
+tunable_policy(`allow_bluetooth',`
+	allow ntop_t self:bluetooth_socket create_socket_perms;
+')
+
 optional_policy(`
 	apache_read_sys_content(ntop_t)
 ')
diff --git a/policy/modules/system/userdomain.if b/policy/modules/system/userdomain.if
index 5221bd13..5654de6e 100644
--- a/policy/modules/system/userdomain.if
+++ b/policy/modules/system/userdomain.if
@@ -1189,6 +1189,10 @@ template(`userdom_unpriv_user_template', `
 		corenet_udp_bind_generic_port($1_t)
 	')
 
+	tunable_policy(`allow_bluetooth',`
+		allow $1_t self:bluetooth_socket create_socket_perms;
+	')
+
 	optional_policy(`
 		netutils_run_ping_cond($1_t, $1_r)
 		netutils_run_traceroute_cond($1_t, $1_r)
@@ -1362,6 +1366,10 @@ template(`userdom_admin_user_template',`
 	userdom_manage_user_home_content_sockets($1_t)
 	userdom_user_home_dir_filetrans_user_home_content($1_t, { dir file lnk_file fifo_file sock_file })
 
+	tunable_policy(`allow_bluetooth',`
+		allow $1_t self:bluetooth_socket create_stream_socket_perms;
+	')
+
 	optional_policy(`
 		postgresql_unconfined($1_t)
 	')
-- 
2.20.1