diff --git a/refpolicy/policy/modules/system/sysnetwork.te b/refpolicy/policy/modules/system/sysnetwork.te index 31ad590..554e424 100644 --- a/refpolicy/policy/modules/system/sysnetwork.te +++ b/refpolicy/policy/modules/system/sysnetwork.te @@ -2,5 +2,308 @@ policy_module(sysnetwork,1.0) +######################################## +# +# Declarations +# + +type dhcpc_t; +type dhcpc_exec_t; +domain_make_daemon_domain(dhcpc_t,dhcpc_exec_t) + +type dhcpc_state_t; +files_make_file(dhcpc_state_t) + +type dhcpc_tmp_t; +files_make_file(dhcpc_tmp_t) + +type dhcpc_var_run_t; +files_make_file(dhcpc_var_run_t) + +type ifconfig_t; +domain_make_domain(ifconfig_t) +role system_r types ifconfig_t; + +type ifconfig_exec_t; +domain_make_entrypoint_file(ifconfig_t, ifconfig_exec_t) + type net_conf_t alias resolv_conf_t; files_make_file(net_conf_t) + +######################################## +# +# DHCP client local policy +# +allow dhcpc_t self:capability { dac_override fsetid net_admin net_raw net_bind_service sys_resource sys_tty_config }; +dontaudit dhcpc_t self:capability sys_tty_config; +# for access("/etc/bashrc", X_OK) on Red Hat +dontaudit dhcpc_t self:capability { dac_read_search sys_module }; + +# create pid file +allow dhcpc_t dhcpc_var_run_t:file { getattr create read write append setattr unlink }; +files_create_daemon_runtime_data(dhcpc_t,dhcpc_var_run_t) + +# transition to ifconfig +allow dhcpc_t ifconfig_exec_t:file { getattr read execute }; +allow dhcpc_t ifconfig_t:process transition; +dontaudit dhcpc_t ifconfig_t:process { noatsecure siginh rlimitinh }; + +# Allow read/write to /etc/resolv.conf and /etc/ntp.conf. Note that any files +# in /etc created by dhcpcd will be labelled net_conf_t. +allow dhcpc_t net_conf_t:file { create ioctl read getattr lock write setattr append link unlink rename }; +files_create_private_config(dhcpc_t,net_conf_t,file) + +# create temp files +allow dhcpc_t dhcpc_tmp_t:dir { create read getattr lock setattr ioctl link unlink rename search add_name remove_name reparent write rmdir }; +allow dhcpc_t dhcpc_tmp_t:file { create ioctl read getattr lock write setattr append link unlink rename }; +files_create_private_tmp_data(dhcpc_t, dhcpc_tmp_t, { file dir }) + +# Allow dhcpc_t to use packet sockets +allow dhcpc_t self:packet_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown }; + +allow dhcpc_t self:netlink_route_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown nlmsg_read }; + +allow dhcpc_t self:fifo_file { ioctl read getattr lock write append }; + +allow dhcpc_t dhcpc_exec_t:file { getattr read execute execute_no_trans }; + +kernel_read_system_state(dhcpc_t) +kernel_read_network_state(dhcpc_t) +kernel_read_kernel_sysctl(dhcpc_t) +kernel_read_hardware_state(dhcpc_t) +kernel_use_file_descriptors(dhcpc_t) + +corenetwork_network_tcp_on_all_interfaces(dhcpc_t) +corenetwork_network_raw_on_all_interfaces(dhcpc_t) +corenetwork_network_udp_on_all_interfaces(dhcpc_t) +corenetwork_network_tcp_on_all_nodes(dhcpc_t) +corenetwork_network_raw_on_all_nodes(dhcpc_t) +corenetwork_network_udp_on_all_nodes(dhcpc_t) +corenetwork_network_tcp_on_all_ports(dhcpc_t) +corenetwork_network_udp_on_all_ports(dhcpc_t) +corenetwork_bind_tcp_on_all_nodes(dhcpc_t) +corenetwork_bind_udp_on_all_nodes(dhcpc_t) +corenetwork_bind_udp_on_dhcpc_port(dhcpc_t) + +devices_discard_data_stream(dhcpc_t) +# for SSP +devices_get_pseudorandom_data(dhcpc_t) + +filesystem_get_all_filesystems_attributes(dhcpc_t) + +terminal_use_controlling_terminal(dhcpc_t) +terminal_ignore_use_console(dhcpc_t) +terminal_ignore_use_all_users_physical_terminals(dhcpc_t) +terminal_ignore_use_all_users_pseudoterminals(dhcpc_t) +terminal_ignore_use_general_physical_terminal(dhcpc_t) + +init_use_file_descriptors(dhcpc_t) +init_script_use_pseudoterminal(dhcpc_t) +init_script_modify_runtime_data(dhcpc_t) + +domain_use_widely_inheritable_file_descriptors(dhcpc_t) + +files_read_general_system_config(dhcpc_t) +files_read_runtime_system_config(dhcpc_t) + +corecommands_execute_general_programs(dhcpc_t) +corecommands_execute_system_programs(dhcpc_t) +corecommands_execute_shell(dhcpc_t) + +logging_send_system_log_message(dhcpc_t) + +libraries_use_dynamic_loader(dhcpc_t) +libraries_read_shared_libraries(dhcpc_t) + +modutils_insmod_transition(dhcpc_t) + +miscfiles_read_localization(dhcpc_t) + +tunable_policy(`targeted_policy', ` +terminal_ignore_use_general_physical_terminal(dhcpc_t) +terminal_ignore_use_general_pseudoterminal(dhcpc_t) +files_ignore_read_rootfs_file(dhcpc_t) +') + +optional_policy(`consoletype.te',` +consoletype_transition(dhcpc_t) +') + +optional_policy(`hostname.te',` +hostname_transition(dhcpc_t) +') + +optional_policy(`selinux.te',` +selinux_newrole_sigchld(dhcpc_t) +') + +optional_policy(`udev.te',` +udev_read_database(dhcpc_t) +') + +# +# dhclient sometimes starts ypbind and ntdp +# +init_script_execute(dhcpc_t) +optional_policy(`ypbind.te',` +ypbind_transition(dhcpc_t) +') +optional_policy(`ntpd.te',` +ntpd_transition(dhcpc_t) +') + +ifdef(`TODO',` +allow dhcpc_t null_device_t:chr_file r_file_perms; +allow dhcpc_t autofs_t:dir { search getattr }; +dontaudit dhcpc_t sysadm_home_dir_t:dir search; +optional_policy(`rhgb.te', ` +allow dhcpc_t rhgb_t:process sigchld; +allow dhcpc_t rhgb_t:fd use; +allow dhcpc_t rhgb_t:fifo_file { read write }; +') + +can_ypbind(dhcpc_t) + +allow dhcpc_t devpts_t:dir search; + +# for localization +allow dhcpc_t lib_t:file { getattr read }; + +ifdef(`nscd.te', ` +domain_auto_trans(dhcpc_t, nscd_exec_t, nscd_t) +') +ifdef(`cardmgr.te', ` +domain_auto_trans(cardmgr_t, dhcpc_exec_t, dhcpc_t) +allow cardmgr_t dhcpc_var_run_t:file { getattr read }; +allow cardmgr_t dhcpc_t:process signal_perms; +') +ifdef(`hotplug.te', ` +domain_auto_trans(hotplug_t, dhcpc_exec_t, dhcpc_t) +allow hotplug_t dhcpc_t:process signal_perms; +allow hotplug_t dhcpc_var_run_t:file { getattr read }; +allow hotplug_t dhcp_etc_t:file rw_file_perms; +allow dhcpc_t hotplug_etc_t:dir { getattr search }; +tunable_policy(`distro_redhat', ` +logging_syslogd_transition(dhcpc_t) +') +')dnl end hotplug.te + +# for the dhcp client to run ping to check IP addresses +ifdef(`ping.te', ` +domain_auto_trans(dhcpc_t, ping_exec_t, ping_t) +ifdef(`hotplug.te',` +allow ping_t hotplug_t:fd use; +') dnl end if hotplug +ifdef(`cardmgr.te', ` +allow ping_t cardmgr_t:fd use; +') dnl end if cardmgr +') dnl end if ping + +ifdef(`dhcpd.te', `', ` +type dhcp_state_t, file_type, sysadmfile; +type dhcp_etc_t, file_type, sysadmfile, usercanread; +typealias dhcp_etc_t alias { etc_dhcp_t etc_dhcpc_t etc_dhcpd_t }; +') + +allow dhcpc_t dhcp_etc_t:dir { getattr read search }; +allow dhcpc_t dhcp_etc_t:file { read getattr }; +allow dhcpc_t dhcp_etc_t:lnk_file { getattr read }; +allow dhcpc_t dhcp_etc_t:file { getattr read execute execute_no_trans }; + +allow dhcpc_t userdomain:fd use; + +ifdef(`distro_redhat', ` +files_execute_system_config_script(dhcpc_t) +allow initrc_t dhcp_etc_t:file rw_file_perms; +') + +allow dhcpc_t var_lib_t:dir search; +file_type_auto_trans(dhcpc_t, dhcp_state_t, dhcpc_state_t, file) + +allow dhcpc_t home_root_t:dir search; +allow initrc_t dhcpc_state_t:file { getattr read }; +dontaudit dhcpc_t var_lock_t:dir search; +dontaudit dhcpc_t selinux_config_t:dir search; +dontaudit dhcpc_t domain:dir getattr; +') dnl endif TODO + +######################################## +# +# Ifconfig local policy +# + +allow ifconfig_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem dyntransition }; +allow ifconfig_t self:capability net_admin; +dontaudit ifconfig_t self:capability sys_module; + +allow ifconfig_t self:fd use; +allow ifconfig_t self:fifo_file { read getattr lock ioctl write append }; +allow ifconfig_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown }; +allow ifconfig_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept }; +allow ifconfig_t self:unix_dgram_socket sendto; +allow ifconfig_t self:unix_stream_socket connectto; +allow ifconfig_t self:shm { associate getattr setattr create destroy read write lock unix_read unix_write }; +allow ifconfig_t self:sem { associate getattr setattr create destroy read write unix_read unix_write }; +allow ifconfig_t self:msgq { associate getattr setattr create destroy read write enqueue unix_read unix_write }; +allow ifconfig_t self:msg { send receive }; + +# Create UDP sockets, necessary when called from dhcpc +allow ifconfig_t self:udp_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown }; + +# for /sbin/ip +allow ifconfig_t self:netlink_route_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown nlmsg_read nlmsg_write }; +allow ifconfig_t self:tcp_socket { create ioctl }; +files_read_general_system_config(ifconfig_t); + +kernel_use_file_descriptors(ifconfig_t) +kernel_read_system_state(ifconfig_t) +kernel_read_network_state(ifconfig_t) + +filesystem_get_persistent_filesystem_attributes(ifconfig_t) + +init_use_file_descriptors(ifconfig_t) +init_script_use_pseudoterminal(ifconfig_t) +init_run_init_use_file_descriptors(ifconfig_t) + +domain_use_widely_inheritable_file_descriptors(ifconfig_t) + +files_ignore_read_rootfs_file(ifconfig_t) + +libraries_use_dynamic_loader(ifconfig_t) +libraries_read_shared_libraries(ifconfig_t) + +logging_send_system_log_message(ifconfig_t) + +miscfiles_read_localization(ifconfig_t) + +ifdef(`TODO',` + +can_ypbind(ifconfig_t) +ifdef(`automount.te', ` +allow ifconfig_t autofs_t:dir { search getattr }; +') + +domain_auto_trans(sysadm_t, ifconfig_exec_t, ifconfig_t) +role sysadm_r types ifconfig_t; +allow ifconfig_t userdomain:fd use; + +# Access terminals. +allow ifconfig_t { user_tty_type admin_tty_type }:chr_file rw_file_perms; +ifdef(`gnome-pty-helper.te', `allow ifconfig_t sysadm_gph_t:fd use;') + +allow ifconfig_t tun_tap_device_t:chr_file { read write }; + +# ifconfig attempts to search some sysctl entries. +# Do not audit those attempts; comment out these rules if it is desired to +# see the denials. +dontaudit ifconfig_t { sysctl_t sysctl_net_t }:dir search; + +allow ifconfig_t lib_t:file { getattr read }; + +optional_policy(`rhgb.te', ` +allow ifconfig_t rhgb_t:process sigchld; +allow ifconfig_t rhgb_t:fd use; +allow ifconfig_t rhgb_t:fifo_file { read write }; +') + +') dnl endif TODO