On Fri, Apr 26, 2019 at 11:27:10AM +0200, Lukas Vrabec wrote:
> 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.
Two observations:
1. are you using 4 spaces ident instead of 8 space tab indentation?
2. this rule is questionable:
allow init_t self:bluetooth_socket { create_socket_perms listen };
>
> Signed-off-by: Lukas Vrabec <lvrabec@xxxxxxxxxx>
> ---
> 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/init.te | 4 ++++
> policy/modules/system/userdomain.if | 8 ++++++++
> 8 files changed, 39 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..b4e66e8f 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..7e817035 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..5fda4f69 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..fa9daa48 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..50157b88 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/init.te b/policy/modules/system/init.te
> index 00f36c99..26eff7bc 100644
> --- a/policy/modules/system/init.te
> +++ b/policy/modules/system/init.te
> @@ -523,6 +523,10 @@ optional_policy(`
> unconfined_domain(init_t)
> ')
>
> +tunable_policy(`allow_bluetooth',`
> + allow init_t self:bluetooth_socket { create_socket_perms listen };
> +')
> +
> ########################################
> #
> # Init script local policy
> diff --git a/policy/modules/system/userdomain.if b/policy/modules/system/userdomain.if
> index 5221bd13..50d2e080 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
>
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Dominick Grift
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