diff --git a/policy/modules/services/dbus.fc b/policy/modules/services/dbus.fc index e67e4e6..a88652f 100644 --- a/policy/modules/services/dbus.fc +++ b/policy/modules/services/dbus.fc @@ -4,6 +4,9 @@ /usr/bin/dbus-daemon(-1)? -- gen_context(system_u:object_r:dbusd_exec_t,s0) /bin/dbus-daemon -- gen_context(system_u:object_r:dbusd_exec_t,s0) +/lib/dbus-1/dbus-daemon-launch-helper -- gen_context(system_u:object_r:dbusd_exec_t,s0) +/lib64/dbus-1/dbus-daemon-launch-helper -- gen_context(system_u:object_r:dbusd_exec_t,s0) + /var/lib/dbus(/.*)? gen_context(system_u:object_r:system_dbusd_var_lib_t,s0) /var/run/dbus(/.*)? gen_context(system_u:object_r:system_dbusd_var_run_t,s0) diff --git a/policy/modules/services/dbus.if b/policy/modules/services/dbus.if index 0f435c5..87ba7d1 100644 --- a/policy/modules/services/dbus.if +++ b/policy/modules/services/dbus.if @@ -117,6 +117,7 @@ template(`dbus_role_template',` dev_read_urand($1_dbusd_t) domain_use_interactive_fds($1_dbusd_t) + domain_read_all_domains_state($1_dbusd_t) files_read_etc_files($1_dbusd_t) files_list_home($1_dbusd_t) @@ -255,7 +256,27 @@ interface(`dbus_read_config',` ######################################## ## -## Connect to the the system DBUS +## Connect to the the session DBUS +## for service (acquire_svc). +## +## +## +## Domain allowed access. +## +## +# +interface(`dbus_connect_session_bus',` + gen_require(` + attribute session_bus_type; + class dbus acquire_svc; + ') + + allow $1 session_bus_type:dbus acquire_svc; +') + +######################################## +## +## Connect to the system DBUS ## for service (acquire_svc). ## ## @@ -310,3 +331,77 @@ interface(`dbus_system_bus_unconfined',` allow $1 system_dbusd_t:dbus *; ') + +######################################## +## +## Create a domain for processes +## which can be started by the system dbus +## +## +## +## Type to be used as a domain. +## +## +## +## +## Type of the program to be used as an entry point to this domain. +## +## +# +interface(`dbus_system_domain',` + gen_require(` + type system_dbusd_t; + role system_r; + ') + + domain_type($1) + domain_entry_file($1, $2) + + role system_r types $1; + + domtrans_pattern(system_dbusd_t, $2, $1) + + dbus_system_bus_client($1) + dbus_connect_system_bus($1) + + ifdef(`hide_broken_symptoms', ` + dontaudit $1 system_dbusd_t:netlink_selinux_socket { read write }; + ') +') + +######################################## +## +## Dontaudit Read, and write system dbus TCP sockets. +## +## +## +## Domain allowed access. +## +## +# +interface(`dbus_dontaudit_system_bus_rw_tcp_sockets',` + gen_require(` + type system_dbusd_t; + ') + + allow $1 system_dbusd_t:tcp_socket { read write }; + allow $1 system_dbusd_t:fd use; +') + +######################################## +## +## Allow unconfined access to the system DBUS. +## +## +## +## Domain allowed access. +## +## +# +interface(`dbus_unconfined',` + gen_require(` + attribute dbusd_unconfined; + ') + + typeattribute $1 dbusd_unconfined; +') diff --git a/policy/modules/services/dbus.te b/policy/modules/services/dbus.te index bdd0967..d67a6e1 100644 --- a/policy/modules/services/dbus.te +++ b/policy/modules/services/dbus.te @@ -1,5 +1,5 @@ -policy_module(dbus, 1.10.3) +policy_module(dbus, 1.10.4) gen_require(` class dbus all_dbus_perms; @@ -10,13 +10,15 @@ gen_require(` # Delcarations # +attribute dbusd_unconfined; attribute session_bus_type; type dbusd_etc_t; -files_type(dbusd_etc_t) +files_config_file(dbusd_etc_t) type dbusd_exec_t; corecmd_executable_file(dbusd_exec_t) +typealias dbusd_exec_t alias system_dbusd_exec_t; type session_dbusd_tmp_t; typealias session_dbusd_tmp_t alias { user_dbusd_tmp_t staff_dbusd_tmp_t sysadm_dbusd_tmp_t }; @@ -31,11 +33,19 @@ type system_dbusd_tmp_t; files_tmp_file(system_dbusd_tmp_t) type system_dbusd_var_lib_t; -files_pid_file(system_dbusd_var_lib_t) +files_type(system_dbusd_var_lib_t) type system_dbusd_var_run_t; files_pid_file(system_dbusd_var_run_t) +ifdef(`enable_mcs',` + init_ranged_daemon_domain(system_dbusd_t, dbusd_exec_t, s0 - mcs_systemhigh) +') + +ifdef(`enable_mls',` + init_ranged_daemon_domain(system_dbusd_t, dbusd_exec_t, s0 - mls_systemhigh) +') + ############################## # # System bus local policy @@ -45,7 +55,7 @@ files_pid_file(system_dbusd_var_run_t) # cjp: dac_override should probably go in a distro_debian allow system_dbusd_t self:capability { dac_override setgid setpcap setuid }; dontaudit system_dbusd_t self:capability sys_tty_config; -allow system_dbusd_t self:process { getattr signal_perms setcap }; +allow system_dbusd_t self:process { getattr getsched signal_perms setpgid getcap setcap }; allow system_dbusd_t self:fifo_file rw_fifo_file_perms; allow system_dbusd_t self:dbus { send_msg acquire_svc }; allow system_dbusd_t self:unix_stream_socket { connectto create_stream_socket_perms connectto }; @@ -53,6 +63,8 @@ allow system_dbusd_t self:unix_dgram_socket create_socket_perms; # Receive notifications of policy reloads and enforcing status changes. allow system_dbusd_t self:netlink_selinux_socket { create bind read }; +can_exec(system_dbusd_t, dbusd_exec_t) + allow system_dbusd_t dbusd_etc_t:dir list_dir_perms; read_files_pattern(system_dbusd_t, dbusd_etc_t, dbusd_etc_t) read_lnk_files_pattern(system_dbusd_t, dbusd_etc_t, dbusd_etc_t) @@ -75,6 +87,14 @@ dev_read_sysfs(system_dbusd_t) fs_getattr_all_fs(system_dbusd_t) fs_search_auto_mountpoints(system_dbusd_t) +fs_dontaudit_list_nfs(system_dbusd_t) + +mls_fd_use_all_levels(system_dbusd_t) +mls_rangetrans_target(system_dbusd_t) +mls_file_read_all_levels(system_dbusd_t) +mls_socket_write_all_levels(system_dbusd_t) +mls_socket_read_to_clearance(system_dbusd_t) +mls_dbus_recv_all_levels(system_dbusd_t) selinux_get_fs_mount(system_dbusd_t) selinux_validate_context(system_dbusd_t) @@ -91,9 +111,9 @@ auth_read_pam_console_data(system_dbusd_t) corecmd_list_bin(system_dbusd_t) corecmd_read_bin_pipes(system_dbusd_t) corecmd_read_bin_sockets(system_dbusd_t) -corecmd_exec_bin(system_dbusd_t) domain_use_interactive_fds(system_dbusd_t) +domain_read_all_domains_state(system_dbusd_t) files_read_etc_files(system_dbusd_t) files_list_home(system_dbusd_t) @@ -120,9 +140,21 @@ optional_policy(` ') optional_policy(` + policykit_domtrans_auth(system_dbusd_t) + policykit_search_lib(system_dbusd_t) +') + +optional_policy(` sysnet_domtrans_dhcpc(system_dbusd_t) ') optional_policy(` udev_read_db(system_dbusd_t) ') + +######################################## +# +# Unconfined access to this module +# + +allow dbusd_unconfined session_bus_type:dbus all_dbus_perms;