policy_module(xserver, 3.1.1) gen_require(` class x_drawable all_x_drawable_perms; class x_screen all_x_screen_perms; class x_gc all_x_gc_perms; class x_font all_x_font_perms; class x_colormap all_x_colormap_perms; class x_property all_x_property_perms; class x_selection all_x_selection_perms; class x_cursor all_x_cursor_perms; class x_client all_x_client_perms; class x_device all_x_device_perms; class x_server all_x_server_perms; class x_extension all_x_extension_perms; class x_resource all_x_resource_perms; class x_event all_x_event_perms; class x_synthetic_event all_x_synthetic_event_perms; ') ######################################## # # Declarations # ## ##

## Allows clients to write to the X server shared ## memory segments. ##

##
gen_tunable(allow_write_xshm, false) ## ##

## Allow xdm logins as sysadm ##

##
gen_tunable(xdm_sysadm_login, false) ## ##

## Support X userspace object manager ##

##
gen_tunable(xserver_object_manager, false) attribute input_xevent_type; attribute xserver_unconfined_type; attribute x_domain; attribute x_userdomain; attribute xproperty_type; attribute xselection_type; attribute xextension_type; attribute xevent_type; type accelgraphics_xext_t, xextension_type; type client_xevent_t, xevent_type; type clipboard_xproperty_t, xproperty_type; type clipboard_xselection_t, xselection_type; type debug_xext_t, xextension_type; type directhw_xext_t alias disallowed_xext_t, xextension_type; type focus_xevent_t, xevent_type; type iceauth_t; type iceauth_exec_t; typealias iceauth_t alias { user_iceauth_t staff_iceauth_t sysadm_iceauth_t }; typealias iceauth_t alias { auditadm_iceauth_t secadm_iceauth_t }; application_domain(iceauth_t, iceauth_exec_t) ubac_constrained(iceauth_t) type iceauth_home_t; typealias iceauth_home_t alias { user_iceauth_home_t staff_iceauth_home_t sysadm_iceauth_home_t }; typealias iceauth_home_t alias { auditadm_iceauth_home_t secadm_iceauth_home_t }; files_poly_member(iceauth_home_t) userdom_user_home_content(iceauth_home_t) type info_xproperty_t, xproperty_type; type input_xevent_t, xevent_type; type manage_xevent_t, xevent_type; type output_xext_t, xextension_type; type property_xevent_t, xevent_type; type remote_xclient_t; type rootwindow_t; typealias rootwindow_t alias { user_rootwindow_t staff_rootwindow_t sysadm_rootwindow_t }; typealias rootwindow_t alias { auditadm_rootwindow_t secadm_rootwindow_t }; ubac_constrained(rootwindow_t) type screensaver_xext_t, xextension_type; type security_xext_t, xextension_type; type shmem_xext_t, xextension_type; type std_xext_t, xextension_type; type video_xext_t, xextension_type; type unknown_xevent_t, xevent_type; xserver_object_types_template(user) typealias user_xproperty_t alias { staff_xproperty_t sysadm_xproperty_t }; typealias user_xproperty_t alias { auditadm_xproperty_t secadm_xproperty_t }; typealias user_input_xevent_t alias { staff_input_xevent_t sysadm_input_xevent_t }; typealias user_input_xevent_t alias { auditadm_input_xevent_t secadm_input_xevent_t }; typealias user_property_xevent_t alias { staff_property_xevent_t sysadm_property_xevent_t }; typealias user_property_xevent_t alias { auditadm_property_xevent_t secadm_property_xevent_t }; typealias user_focus_xevent_t alias { staff_focus_xevent_t sysadm_focus_xevent_t }; typealias user_focus_xevent_t alias { auditadm_focus_xevent_t secadm_focus_xevent_t }; typealias user_manage_xevent_t alias { staff_manage_xevent_t sysadm_manage_xevent_t }; typealias user_manage_xevent_t alias { auditadm_manage_xevent_t secadm_manage_xevent_t }; typealias user_default_xevent_t alias { staff_default_xevent_t sysadm_default_xevent_t }; typealias user_default_xevent_t alias { auditadm_default_xevent_t secadm_default_xevent_t }; typealias user_client_xevent_t alias { staff_client_xevent_t sysadm_client_xevent_t }; typealias user_client_xevent_t alias { auditadm_client_xevent_t secadm_client_xevent_t }; type user_fonts_t; typealias user_fonts_t alias { staff_fonts_t sysadm_fonts_t }; typealias user_fonts_t alias { auditadm_fonts_t secadm_fonts_t }; userdom_user_home_content(user_fonts_t) type user_fonts_cache_t; typealias user_fonts_cache_t alias { staff_fonts_cache_t sysadm_fonts_cache_t }; typealias user_fonts_cache_t alias { auditadm_fonts_cache_t secadm_fonts_cache_t }; userdom_user_home_content(user_fonts_cache_t) type user_fonts_config_t; typealias user_fonts_config_t alias { staff_fonts_config_t sysadm_fonts_config_t }; typealias user_fonts_config_t alias { auditadm_fonts_config_t secadm_fonts_config_t }; userdom_user_home_content(user_fonts_config_t) type xevent_t alias default_xevent_t, xevent_type; type xext_t alias unknown_xext_t, xextension_type; type xproperty_t alias default_xproperty_t, xproperty_type; type xselection_t alias default_xselection_t, xselection_type; type xauth_t; type xauth_exec_t; typealias xauth_t alias { user_xauth_t staff_xauth_t sysadm_xauth_t }; typealias xauth_t alias { auditadm_xauth_t secadm_xauth_t }; application_domain(xauth_t, xauth_exec_t) ubac_constrained(xauth_t) type xauth_home_t; typealias xauth_home_t alias { user_xauth_home_t staff_xauth_home_t sysadm_xauth_home_t }; typealias xauth_home_t alias { auditadm_xauth_home_t secadm_xauth_home_t }; files_poly_member(xauth_home_t) userdom_user_home_content(xauth_home_t) type xauth_tmp_t; typealias xauth_tmp_t alias { user_xauth_tmp_t staff_xauth_tmp_t sysadm_xauth_tmp_t }; typealias xauth_tmp_t alias { auditadm_xauth_tmp_t secadm_xauth_tmp_t }; files_tmp_file(xauth_tmp_t) ubac_constrained(xauth_tmp_t) # this is not actually a device, its a pipe type xconsole_device_t; files_type(xconsole_device_t) fs_associate_tmpfs(xconsole_device_t) files_associate_tmp(xconsole_device_t) type xdm_t; type xdm_exec_t; auth_login_pgm_domain(xdm_t) init_domain(xdm_t, xdm_exec_t) init_daemon_domain(xdm_t, xdm_exec_t) type xdm_lock_t; files_lock_file(xdm_lock_t) type xdm_rw_etc_t; files_type(xdm_rw_etc_t) type xdm_var_lib_t; files_type(xdm_var_lib_t) type xdm_var_run_t; files_pid_file(xdm_var_run_t) type xdm_tmp_t; files_tmp_file(xdm_tmp_t) typealias xdm_tmp_t alias ice_tmp_t; type xdm_tmpfs_t; files_tmpfs_file(xdm_tmpfs_t) # type for /var/lib/xkb type xkb_var_lib_t; files_type(xkb_var_lib_t) # Type for the executable used to start the X server, e.g. Xwrapper. type xserver_t; type xserver_exec_t; typealias xserver_t alias { user_xserver_t staff_xserver_t sysadm_xserver_t }; typealias xserver_t alias { auditadm_xserver_t secadm_xserver_t }; xserver_object_types_template(xdm) xserver_common_x_domain_template(xdm, xdm_t) init_system_domain(xserver_t, xserver_exec_t) ubac_constrained(xserver_t) type xserver_tmp_t; typealias xserver_tmp_t alias { user_xserver_tmp_t staff_xserver_tmp_t sysadm_xserver_tmp_t }; typealias xserver_tmp_t alias { auditadm_xserver_tmp_t secadm_xserver_tmp_t }; files_tmp_file(xserver_tmp_t) ubac_constrained(xserver_tmp_t) type xserver_tmpfs_t; typealias xserver_tmpfs_t alias { user_xserver_tmpfs_t staff_xserver_tmpfs_t sysadm_xserver_tmpfs_t }; typealias xserver_tmpfs_t alias { auditadm_xserver_tmpfs_t secadm_xserver_tmpfs_t }; files_tmpfs_file(xserver_tmpfs_t) ubac_constrained(xserver_tmpfs_t) type xsession_exec_t; corecmd_executable_file(xsession_exec_t) # Type for the X server log file. type xserver_log_t; logging_log_file(xserver_log_t) ifdef(`enable_mcs',` init_ranged_domain(xdm_t, xdm_exec_t, s0 - mcs_systemhigh) init_ranged_daemon_domain(xdm_t, xdm_exec_t, s0 - mcs_systemhigh) ') optional_policy(` prelink_object_file(xkb_var_lib_t) ') ######################################## # # Iceauth local policy # allow iceauth_t iceauth_home_t:file manage_file_perms; userdom_user_home_dir_filetrans(iceauth_t, iceauth_home_t, file) allow xdm_t iceauth_home_t:file read_file_perms; fs_search_auto_mountpoints(iceauth_t) userdom_use_user_terminals(iceauth_t) tunable_policy(`use_nfs_home_dirs',` fs_manage_nfs_files(iceauth_t) ') tunable_policy(`use_samba_home_dirs',` fs_manage_cifs_files(iceauth_t) ') ######################################## # # Xauth local policy # allow xauth_t self:process signal; allow xauth_t self:unix_stream_socket create_stream_socket_perms; allow xauth_t xauth_home_t:file manage_file_perms; userdom_user_home_dir_filetrans(xauth_t, xauth_home_t, file) manage_dirs_pattern(xauth_t, xauth_tmp_t, xauth_tmp_t) manage_files_pattern(xauth_t, xauth_tmp_t, xauth_tmp_t) files_tmp_filetrans(xauth_t, xauth_tmp_t, { file dir }) allow xdm_t xauth_home_t:file manage_file_perms; userdom_user_home_dir_filetrans(xdm_t, xauth_home_t, file) domain_use_interactive_fds(xauth_t) files_read_etc_files(xauth_t) files_search_pids(xauth_t) fs_getattr_xattr_fs(xauth_t) fs_search_auto_mountpoints(xauth_t) # cjp: why? term_use_ptmx(xauth_t) auth_use_nsswitch(xauth_t) userdom_use_user_terminals(xauth_t) userdom_read_user_tmp_files(xauth_t) xserver_rw_xdm_tmp_files(xauth_t) tunable_policy(`use_nfs_home_dirs',` fs_manage_nfs_files(xauth_t) ') tunable_policy(`use_samba_home_dirs',` fs_manage_cifs_files(xauth_t) ') optional_policy(` ssh_sigchld(xauth_t) ssh_read_pipes(xauth_t) ssh_dontaudit_rw_tcp_sockets(xauth_t) ') ######################################## # # XDM Local policy # allow xdm_t self:capability { setgid setuid sys_resource kill sys_tty_config mknod chown dac_override dac_read_search fowner fsetid ipc_owner sys_nice sys_rawio net_bind_service }; allow xdm_t self:process { setexec setpgid getsched setsched setrlimit signal_perms setkeycreate }; allow xdm_t self:fifo_file rw_fifo_file_perms; allow xdm_t self:shm create_shm_perms; allow xdm_t self:sem create_sem_perms; allow xdm_t self:unix_stream_socket { connectto create_stream_socket_perms }; allow xdm_t self:unix_dgram_socket create_socket_perms; allow xdm_t self:tcp_socket create_stream_socket_perms; allow xdm_t self:udp_socket create_socket_perms; allow xdm_t self:socket create_socket_perms; allow xdm_t self:appletalk_socket create_socket_perms; allow xdm_t self:key { search link write }; allow xdm_t xconsole_device_t:fifo_file { getattr setattr }; # Allow gdm to run gdm-binary can_exec(xdm_t, xdm_exec_t) allow xdm_t xdm_lock_t:file manage_file_perms; files_lock_filetrans(xdm_t, xdm_lock_t, file) # wdm has its own config dir /etc/X11/wdm # this is ugly, daemons should not create files under /etc! manage_files_pattern(xdm_t, xdm_rw_etc_t, xdm_rw_etc_t) manage_dirs_pattern(xdm_t, xdm_tmp_t, xdm_tmp_t) manage_files_pattern(xdm_t, xdm_tmp_t, xdm_tmp_t) manage_sock_files_pattern(xdm_t, xdm_tmp_t, xdm_tmp_t) files_tmp_filetrans(xdm_t, xdm_tmp_t, { file dir sock_file }) manage_dirs_pattern(xdm_t, xdm_tmpfs_t, xdm_tmpfs_t) manage_files_pattern(xdm_t, xdm_tmpfs_t, xdm_tmpfs_t) manage_lnk_files_pattern(xdm_t, xdm_tmpfs_t, xdm_tmpfs_t) manage_fifo_files_pattern(xdm_t, xdm_tmpfs_t, xdm_tmpfs_t) manage_sock_files_pattern(xdm_t, xdm_tmpfs_t, xdm_tmpfs_t) fs_tmpfs_filetrans(xdm_t, xdm_tmpfs_t,{ dir file lnk_file sock_file fifo_file }) manage_dirs_pattern(xdm_t, xdm_var_lib_t, xdm_var_lib_t) manage_files_pattern(xdm_t, xdm_var_lib_t, xdm_var_lib_t) files_var_lib_filetrans(xdm_t, xdm_var_lib_t, file) manage_dirs_pattern(xdm_t, xdm_var_run_t, xdm_var_run_t) manage_files_pattern(xdm_t, xdm_var_run_t, xdm_var_run_t) manage_fifo_files_pattern(xdm_t, xdm_var_run_t, xdm_var_run_t) files_pid_filetrans(xdm_t, xdm_var_run_t, { dir file fifo_file }) allow xdm_t xserver_t:process signal; allow xdm_t xserver_t:unix_stream_socket connectto; allow xdm_t xserver_tmp_t:sock_file rw_sock_file_perms; allow xdm_t xserver_tmp_t:dir { setattr list_dir_perms }; # transition to the xdm xserver domtrans_pattern(xdm_t, xserver_exec_t, xserver_t) allow xserver_t xdm_t:process signal; allow xdm_t xserver_t:process { noatsecure siginh rlimitinh signal sigkill }; allow xdm_t xserver_t:shm rw_shm_perms; # connect to xdm xserver over stream socket stream_connect_pattern(xdm_t, xserver_tmp_t, xserver_tmp_t, xserver_t) # Remove /tmp/.X11-unix/X0. delete_files_pattern(xdm_t, xserver_tmp_t, xserver_tmp_t) delete_sock_files_pattern(xdm_t, xserver_tmp_t, xserver_tmp_t) manage_dirs_pattern(xdm_t, xserver_log_t, xserver_log_t) manage_files_pattern(xdm_t, xserver_log_t, xserver_log_t) manage_fifo_files_pattern(xdm_t, xserver_log_t, xserver_log_t) logging_log_filetrans(xdm_t, xserver_log_t, file) kernel_read_system_state(xdm_t) kernel_read_kernel_sysctls(xdm_t) kernel_read_net_sysctls(xdm_t) kernel_read_network_state(xdm_t) corecmd_exec_shell(xdm_t) corecmd_exec_bin(xdm_t) corenet_all_recvfrom_unlabeled(xdm_t) corenet_all_recvfrom_netlabel(xdm_t) corenet_tcp_sendrecv_generic_if(xdm_t) corenet_udp_sendrecv_generic_if(xdm_t) corenet_tcp_sendrecv_generic_node(xdm_t) corenet_udp_sendrecv_generic_node(xdm_t) corenet_tcp_sendrecv_all_ports(xdm_t) corenet_udp_sendrecv_all_ports(xdm_t) corenet_tcp_bind_generic_node(xdm_t) corenet_udp_bind_generic_node(xdm_t) corenet_tcp_connect_all_ports(xdm_t) corenet_sendrecv_all_client_packets(xdm_t) # xdm tries to bind to biff_port_t corenet_dontaudit_tcp_bind_all_ports(xdm_t) dev_read_rand(xdm_t) dev_read_sysfs(xdm_t) dev_getattr_framebuffer_dev(xdm_t) dev_setattr_framebuffer_dev(xdm_t) dev_getattr_mouse_dev(xdm_t) dev_setattr_mouse_dev(xdm_t) dev_rw_apm_bios(xdm_t) dev_setattr_apm_bios_dev(xdm_t) dev_rw_dri(xdm_t) dev_rw_agp(xdm_t) dev_getattr_xserver_misc_dev(xdm_t) dev_setattr_xserver_misc_dev(xdm_t) dev_getattr_misc_dev(xdm_t) dev_setattr_misc_dev(xdm_t) dev_dontaudit_rw_misc(xdm_t) dev_getattr_video_dev(xdm_t) dev_setattr_video_dev(xdm_t) dev_getattr_scanner_dev(xdm_t) dev_setattr_scanner_dev(xdm_t) dev_getattr_sound_dev(xdm_t) dev_setattr_sound_dev(xdm_t) dev_getattr_power_mgmt_dev(xdm_t) dev_setattr_power_mgmt_dev(xdm_t) domain_use_interactive_fds(xdm_t) # Do not audit denied probes of /proc. domain_dontaudit_read_all_domains_state(xdm_t) files_read_etc_files(xdm_t) files_read_var_files(xdm_t) files_read_etc_runtime_files(xdm_t) files_exec_etc_files(xdm_t) files_list_mnt(xdm_t) # Read /usr/share/terminfo/l/linux and /usr/share/icons/default/index.theme... files_read_usr_files(xdm_t) # Poweroff wants to create the /poweroff file when run from xdm files_create_boot_flag(xdm_t) fs_getattr_all_fs(xdm_t) fs_search_auto_mountpoints(xdm_t) storage_dontaudit_read_fixed_disk(xdm_t) storage_dontaudit_write_fixed_disk(xdm_t) storage_dontaudit_setattr_fixed_disk_dev(xdm_t) storage_dontaudit_raw_read_removable_device(xdm_t) storage_dontaudit_raw_write_removable_device(xdm_t) storage_dontaudit_setattr_removable_dev(xdm_t) storage_dontaudit_rw_scsi_generic(xdm_t) term_setattr_console(xdm_t) term_use_unallocated_ttys(xdm_t) term_setattr_unallocated_ttys(xdm_t) auth_domtrans_pam_console(xdm_t) auth_manage_pam_pid(xdm_t) auth_manage_pam_console_data(xdm_t) auth_rw_faillog(xdm_t) auth_write_login_records(xdm_t) # Run telinit->init to shutdown. init_telinit(xdm_t) libs_exec_lib_files(xdm_t) logging_read_generic_logs(xdm_t) miscfiles_read_localization(xdm_t) miscfiles_read_fonts(xdm_t) sysnet_read_config(xdm_t) userdom_dontaudit_use_unpriv_user_fds(xdm_t) userdom_create_all_users_keys(xdm_t) # for .dmrc userdom_read_user_home_content_files(xdm_t) # Search /proc for any user domain processes. userdom_read_all_users_state(xdm_t) userdom_signal_all_users(xdm_t) xserver_rw_session(xdm_t, xdm_tmpfs_t) xserver_unconfined(xdm_t) tunable_policy(`use_nfs_home_dirs',` fs_manage_nfs_dirs(xdm_t) fs_manage_nfs_files(xdm_t) fs_manage_nfs_symlinks(xdm_t) fs_exec_nfs_files(xdm_t) ') tunable_policy(`use_samba_home_dirs',` fs_manage_cifs_dirs(xdm_t) fs_manage_cifs_files(xdm_t) fs_manage_cifs_symlinks(xdm_t) fs_exec_cifs_files(xdm_t) ') tunable_policy(`xdm_sysadm_login',` userdom_xsession_spec_domtrans_all_users(xdm_t) # FIXME: # xserver_rw_session_template(xdm,userdomain) ',` userdom_xsession_spec_domtrans_unpriv_users(xdm_t) # FIXME: # xserver_rw_session_template(xdm,unpriv_userdomain) # dontaudit xserver_t sysadm_t:shm { unix_read unix_write }; # allow xserver_t xdm_tmpfs_t:file rw_file_perms; ') optional_policy(` alsa_domtrans(xdm_t) ') optional_policy(` consolekit_dbus_chat(xdm_t) ') optional_policy(` consoletype_exec(xdm_t) ') optional_policy(` # Talk to the console mouse server. gpm_stream_connect(xdm_t) gpm_setattr_gpmctl(xdm_t) ') optional_policy(` hostname_exec(xdm_t) ') optional_policy(` loadkeys_exec(xdm_t) ') optional_policy(` locallogin_signull(xdm_t) ') optional_policy(` # Do not audit attempts to check whether user root has email mta_dontaudit_getattr_spool_files(xdm_t) ') optional_policy(` resmgr_stream_connect(xdm_t) ') optional_policy(` seutil_sigchld_newrole(xdm_t) ') optional_policy(` udev_read_db(xdm_t) ') optional_policy(` unconfined_domain(xdm_t) unconfined_domtrans(xdm_t) ifndef(`distro_redhat',` allow xdm_t self:process { execheap execmem }; ') ifdef(`distro_rhel4',` allow xdm_t self:process { execheap execmem }; ') ') optional_policy(` userhelper_dontaudit_search_config(xdm_t) ') optional_policy(` usermanage_read_crack_db(xdm_t) ') optional_policy(` xfs_stream_connect(xdm_t) ') ######################################## # # X server local policy # # setuid/setgid for the wrapper program to change UID # sys_rawio is for iopl access - should not be needed for frame-buffer # sys_admin, locking shared mem? chowning IPC message queues or semaphores? # admin of APM bios? # sys_nice is so that the X server can set a negative nice value # execheap needed until the X module loader is fixed. # NVIDIA Needs execstack allow xserver_t self:capability { dac_override fowner fsetid setgid setuid ipc_owner sys_rawio sys_admin sys_nice sys_tty_config mknod net_bind_service }; dontaudit xserver_t self:capability chown; allow xserver_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap }; allow xserver_t self:memprotect mmap_zero; allow xserver_t self:fd use; allow xserver_t self:fifo_file rw_fifo_file_perms; allow xserver_t self:sock_file read_sock_file_perms; allow xserver_t self:shm create_shm_perms; allow xserver_t self:sem create_sem_perms; allow xserver_t self:msgq create_msgq_perms; allow xserver_t self:msg { send receive }; allow xserver_t self:unix_dgram_socket { create_socket_perms sendto }; allow xserver_t self:unix_stream_socket { create_stream_socket_perms connectto }; allow xserver_t self:tcp_socket create_stream_socket_perms; allow xserver_t self:udp_socket create_socket_perms; # Device rules allow x_domain xserver_t:x_device { read getattr use setattr setfocus grab bell }; allow xserver_t { input_xevent_t input_xevent_type }:x_event send; domtrans_pattern(xserver_t, xauth_exec_t, xauth_t) allow xserver_t xauth_home_t:file read_file_perms; # Labeling rules for root windows and colormaps type_transition xserver_t xserver_t:{ x_drawable x_colormap } rootwindow_t; allow xserver_t { rootwindow_t x_domain }:x_drawable send; manage_dirs_pattern(xserver_t, xserver_tmp_t, xserver_tmp_t) manage_files_pattern(xserver_t, xserver_tmp_t, xserver_tmp_t) manage_sock_files_pattern(xserver_t, xserver_tmp_t, xserver_tmp_t) files_tmp_filetrans(xserver_t, xserver_tmp_t, { file dir sock_file }) filetrans_pattern(xserver_t, xserver_tmp_t, xserver_tmp_t, sock_file) manage_dirs_pattern(xserver_t, xserver_tmpfs_t, xserver_tmpfs_t) manage_files_pattern(xserver_t, xserver_tmpfs_t, xserver_tmpfs_t) manage_lnk_files_pattern(xserver_t, xserver_tmpfs_t, xserver_tmpfs_t) manage_fifo_files_pattern(xserver_t, xserver_tmpfs_t, xserver_tmpfs_t) manage_sock_files_pattern(xserver_t, xserver_tmpfs_t, xserver_tmpfs_t) fs_tmpfs_filetrans(xserver_t, xserver_tmpfs_t, { dir file lnk_file sock_file fifo_file }) manage_files_pattern(xserver_t, xkb_var_lib_t, xkb_var_lib_t) manage_lnk_files_pattern(xserver_t, xkb_var_lib_t, xkb_var_lib_t) files_search_var_lib(xserver_t) # Create files in /var/log with the xserver_log_t type. manage_files_pattern(xserver_t, xserver_log_t, xserver_log_t) logging_log_filetrans(xserver_t, xserver_log_t, file) kernel_read_system_state(xserver_t) kernel_read_device_sysctls(xserver_t) kernel_read_modprobe_sysctls(xserver_t) # Xorg wants to check if kernel is tainted kernel_read_kernel_sysctls(xserver_t) kernel_write_proc_files(xserver_t) # Run helper programs in xserver_t. corecmd_exec_bin(xserver_t) corecmd_exec_shell(xserver_t) corenet_all_recvfrom_unlabeled(xserver_t) corenet_all_recvfrom_netlabel(xserver_t) corenet_tcp_sendrecv_generic_if(xserver_t) corenet_udp_sendrecv_generic_if(xserver_t) corenet_tcp_sendrecv_generic_node(xserver_t) corenet_udp_sendrecv_generic_node(xserver_t) corenet_tcp_sendrecv_all_ports(xserver_t) corenet_udp_sendrecv_all_ports(xserver_t) corenet_tcp_bind_generic_node(xserver_t) corenet_tcp_bind_xserver_port(xserver_t) corenet_tcp_connect_all_ports(xserver_t) corenet_sendrecv_xserver_server_packets(xserver_t) corenet_sendrecv_all_client_packets(xserver_t) dev_rw_sysfs(xserver_t) dev_rw_mouse(xserver_t) dev_rw_mtrr(xserver_t) dev_rw_apm_bios(xserver_t) dev_rw_agp(xserver_t) dev_rw_framebuffer(xserver_t) dev_manage_dri_dev(xserver_t) dev_create_generic_dirs(xserver_t) dev_setattr_generic_dirs(xserver_t) # raw memory access is needed if not using the frame buffer dev_read_raw_memory(xserver_t) dev_wx_raw_memory(xserver_t) # for other device nodes such as the NVidia binary-only driver dev_rw_xserver_misc(xserver_t) # read events - the synaptics touchpad driver reads raw events dev_rw_input_dev(xserver_t) dev_rwx_zero(xserver_t) domain_mmap_low(xserver_t) files_read_etc_files(xserver_t) files_read_etc_runtime_files(xserver_t) files_read_usr_files(xserver_t) # brought on by rhgb files_search_mnt(xserver_t) # for nscd files_dontaudit_search_pids(xserver_t) fs_getattr_xattr_fs(xserver_t) fs_search_nfs(xserver_t) fs_search_auto_mountpoints(xserver_t) fs_search_ramfs(xserver_t) mls_xwin_read_to_clearance(xserver_t) selinux_validate_context(xserver_t) selinux_compute_access_vector(xserver_t) selinux_compute_create_context(xserver_t) auth_use_nsswitch(xserver_t) init_getpgid(xserver_t) term_setattr_unallocated_ttys(xserver_t) term_use_unallocated_ttys(xserver_t) getty_use_fds(xserver_t) locallogin_use_fds(xserver_t) logging_send_syslog_msg(xserver_t) logging_send_audit_msgs(xserver_t) miscfiles_read_localization(xserver_t) miscfiles_read_fonts(xserver_t) modutils_domtrans_insmod(xserver_t) # read x_contexts seutil_read_default_contexts(xserver_t) userdom_search_user_home_dirs(xserver_t) userdom_use_user_ttys(xserver_t) userdom_setattr_user_ttys(xserver_t) userdom_rw_user_tmpfs_files(xserver_t) xserver_use_user_fonts(xserver_t) ifndef(`distro_redhat',` allow xserver_t self:process { execmem execheap execstack }; ') ifdef(`distro_rhel4',` allow xserver_t self:process { execmem execheap execstack }; ') ifdef(`enable_mls',` range_transition xserver_t xserver_tmp_t:sock_file s0 - mls_systemhigh; range_transition xserver_t xserver_t:x_drawable s0 - mls_systemhigh; ') tunable_policy(`!xserver_object_manager',` # should be xserver_unconfined(xserver_t), # but typeattribute doesnt work in conditionals allow xserver_t xserver_t:x_server *; allow xserver_t { x_domain rootwindow_t }:x_drawable *; allow xserver_t xserver_t:x_screen *; allow xserver_t x_domain:x_gc *; allow xserver_t { x_domain rootwindow_t }:x_colormap *; allow xserver_t xproperty_type:x_property *; allow xserver_t xselection_type:x_selection *; allow xserver_t x_domain:x_cursor *; allow xserver_t { x_domain remote_xclient_t }:x_client *; allow xserver_t { x_domain xserver_t }:x_device *; allow xserver_t xextension_type:x_extension *; allow xserver_t { x_domain xserver_t }:x_resource *; allow xserver_t xevent_type:{ x_event x_synthetic_event } *; ') optional_policy(` apm_stream_connect(xserver_t) ') optional_policy(` auth_search_pam_console_data(xserver_t) ') optional_policy(` rhgb_getpgid(xserver_t) rhgb_signal(xserver_t) ') optional_policy(` unconfined_domain_noaudit(xserver_t) unconfined_domtrans(xserver_t) ') optional_policy(` userhelper_search_config(xserver_t) ') optional_policy(` xfs_stream_connect(xserver_t) ') ######################################## # # XDM Xserver local policy # # cjp: when xdm is configurable via tunable these # rules will be enabled only when xdm is enabled allow xserver_t xdm_t:process { signal getpgid }; allow xserver_t xdm_t:shm rw_shm_perms; # NB we do NOT allow xserver_t xdm_var_lib_t:dir, only access to an open # handle of a file inside the dir!!! allow xserver_t xdm_var_lib_t:file { getattr read }; dontaudit xserver_t xdm_var_lib_t:dir search; allow xserver_t xdm_var_run_t:file read_file_perms; # Label pid and temporary files with derived types. manage_files_pattern(xserver_t, xdm_tmp_t, xdm_tmp_t) manage_lnk_files_pattern(xserver_t, xdm_tmp_t, xdm_tmp_t) manage_sock_files_pattern(xserver_t, xdm_tmp_t, xdm_tmp_t) # Run xkbcomp. allow xserver_t xkb_var_lib_t:lnk_file read; can_exec(xserver_t, xkb_var_lib_t) # VNC v4 module in X server corenet_tcp_bind_vnc_port(xserver_t) init_use_fds(xserver_t) # FIXME: After per user fonts are properly working # xserver_t may no longer have any reason # to read ROLE_home_t - examine this in more detail # (xauth?) userdom_read_user_home_content_files(xserver_t) xserver_use_user_fonts(xserver_t) tunable_policy(`use_nfs_home_dirs',` fs_manage_nfs_dirs(xserver_t) fs_manage_nfs_files(xserver_t) fs_manage_nfs_symlinks(xserver_t) ') tunable_policy(`use_samba_home_dirs',` fs_manage_cifs_dirs(xserver_t) fs_manage_cifs_files(xserver_t) fs_manage_cifs_symlinks(xserver_t) ') optional_policy(` dbus_system_bus_client(xserver_t) hal_dbus_chat(xserver_t) ') optional_policy(` resmgr_stream_connect(xdm_t) ') optional_policy(` rhgb_rw_shm(xserver_t) rhgb_rw_tmpfs_files(xserver_t) ') ######################################## # # Rules common to all X window domains # # Hacks # everyone can get the input focus of everyone else # this is a fundamental brokenness in the X protocol allow x_domain { x_domain xserver_t }:x_device getfocus; # everyone can grab the server # everyone does it, it is basically a free DOS attack allow x_domain xserver_t:x_server grab; # everyone can get the font path, etc. # this could leak out sensitive information allow x_domain xserver_t:x_server getattr; # everyone can do override-redirect windows. # this could be used to spoof labels allow x_domain self:x_drawable override; # everyone can receive management events on the root window # allows to know when new windows appear, among other things allow x_domain manage_xevent_t:x_event receive; # X Server # can read server-owned resources allow x_domain xserver_t:x_resource read; # can mess with own clients allow x_domain self:x_client { manage destroy }; # X Protocol Extensions allow x_domain std_xext_t:x_extension { query use }; allow x_domain shmem_xext_t:x_extension { query use }; dontaudit x_domain xextension_type:x_extension { query use }; # X Properties # can read and write cut buffers allow x_domain clipboard_xproperty_t:x_property { create read write append }; # can read info properties allow x_domain info_xproperty_t:x_property read; # can change properties of root window allow x_domain rootwindow_t:x_drawable { list_property get_property set_property }; # can change properties of own windows allow x_domain self:x_drawable { list_property get_property set_property }; # X Windows # operations allowed on root windows allow x_domain rootwindow_t:x_drawable { getattr list_child add_child remove_child send receive }; # operations allowed on my windows allow x_domain self:x_drawable { create destroy getattr setattr read write show hide list_child add_child remove_child manage send receive }; # X Colormaps # can use the default colormap allow x_domain rootwindow_t:x_colormap { read use add_color }; # X Input # can receive certain root window events allow x_domain focus_xevent_t:x_event receive; allow x_domain property_xevent_t:x_event receive; allow x_domain client_xevent_t:x_synthetic_event receive; allow x_domain manage_xevent_t:x_synthetic_event receive; # can send ICCCM events to the root window allow x_domain manage_xevent_t:x_synthetic_event send; allow x_domain client_xevent_t:x_synthetic_event send; # X Selections # can use the clipboard allow x_domain clipboard_xselection_t:x_selection { getattr setattr read }; # can query all other selections allow x_domain xselection_t:x_selection { getattr read }; # Other X Objects # can create and use cursors allow x_domain self:x_cursor *; # can create and use graphics contexts allow x_domain self:x_gc *; # can create and use colormaps allow x_domain self:x_colormap *; # can read and write own objects allow x_domain self:x_resource { read write }; tunable_policy(`! xserver_object_manager',` # should be xserver_unconfined(x_domain), # but typeattribute doesnt work in conditionals allow x_domain xserver_t:x_server *; allow x_domain { x_domain rootwindow_t }:x_drawable *; allow x_domain xserver_t:x_screen *; allow x_domain x_domain:x_gc *; allow x_domain { x_domain rootwindow_t }:x_colormap *; allow x_domain xproperty_type:x_property *; allow x_domain xselection_type:x_selection *; allow x_domain x_domain:x_cursor *; allow x_domain { x_domain remote_xclient_t }:x_client *; allow x_domain { x_domain xserver_t }:x_device *; allow x_domain xextension_type:x_extension *; allow x_domain { x_domain xserver_t }:x_resource *; allow x_domain xevent_type:{ x_event x_synthetic_event } *; ') ######################################## # # Rules for unconfined access to this module # allow xserver_unconfined_type xserver_t:x_server *; allow xserver_unconfined_type { x_domain rootwindow_t }:x_drawable *; allow xserver_unconfined_type xserver_t:x_screen *; allow xserver_unconfined_type x_domain:x_gc *; allow xserver_unconfined_type { x_domain rootwindow_t }:x_colormap *; allow xserver_unconfined_type xproperty_type:x_property *; allow xserver_unconfined_type xselection_type:x_selection *; allow xserver_unconfined_type x_domain:x_cursor *; allow xserver_unconfined_type { x_domain remote_xclient_t }:x_client *; allow xserver_unconfined_type { x_domain xserver_t }:x_device *; allow xserver_unconfined_type xextension_type:x_extension *; allow xserver_unconfined_type { x_domain xserver_t }:x_resource *; allow xserver_unconfined_type xevent_type:{ x_event x_synthetic_event } *; ifdef(`TODO',` tunable_policy(`allow_polyinstantiation',` # xdm needs access for linking .X11-unix to poly /tmp allow xdm_t polymember:dir { add_name remove_name write }; allow xdm_t polymember:lnk_file { create unlink }; # xdm needs access for copying .Xauthority into new home allow xdm_t polymember:file { create getattr write }; ') # # Wants to delete .xsession-errors file # allow xdm_t user_home_type:file unlink; ') dnl end TODO