From 7c8fc35b142595f4fccd36831a5e9838b17cac6b Mon Sep 17 00:00:00 2001 From: Chris PeBenito Date: Fri, 2 Sep 2005 14:52:08 +0000 Subject: [PATCH] add dhcpd --- refpolicy/Changelog | 1 + refpolicy/policy/modules/services/bind.if | 19 +++ refpolicy/policy/modules/services/dhcpd.fc | 6 + refpolicy/policy/modules/services/dhcpd.if | 20 +++ refpolicy/policy/modules/services/dhcpd.te | 136 ++++++++++++++++++ refpolicy/policy/modules/system/init.te | 6 + refpolicy/policy/modules/system/sysnetwork.fc | 2 + refpolicy/policy/modules/system/sysnetwork.if | 77 ++++++++++ 8 files changed, 267 insertions(+) create mode 100644 refpolicy/policy/modules/services/dhcpd.fc create mode 100644 refpolicy/policy/modules/services/dhcpd.if create mode 100644 refpolicy/policy/modules/services/dhcpd.te diff --git a/refpolicy/Changelog b/refpolicy/Changelog index 74107e30..6f9abafb 100644 --- a/refpolicy/Changelog +++ b/refpolicy/Changelog @@ -3,6 +3,7 @@ - Added policies: comsat dbus + dhcpd * Fri Aug 26 2005 Chris PeBenito - 20050826 - Add Makefile support for building loadable modules. diff --git a/refpolicy/policy/modules/services/bind.if b/refpolicy/policy/modules/services/bind.if index 2b0f6b9d..b9b181f2 100644 --- a/refpolicy/policy/modules/services/bind.if +++ b/refpolicy/policy/modules/services/bind.if @@ -50,6 +50,25 @@ interface(`bind_run_ndc',` allow ndc_t $3:chr_file rw_term_perms; ') +######################################## +## +## Read DNSSEC keys. +## +## +## Domain allowed access. +## +# +interface(`bind_read_dnssec_keys',` + gen_require(` + type named_conf_t, named_zone_t, dnssec_t; + class dir search; + class file { getattr read }; + ') + + allow $1 { named_conf_t named_zone_t }:dir search; + allow $1 dnssec_t:file { getattr read }; +') + ######################################## ## ## Read BIND named configuration files. diff --git a/refpolicy/policy/modules/services/dhcpd.fc b/refpolicy/policy/modules/services/dhcpd.fc new file mode 100644 index 00000000..dd68495e --- /dev/null +++ b/refpolicy/policy/modules/services/dhcpd.fc @@ -0,0 +1,6 @@ + +/usr/sbin/dhcpd.* -- context_template(system_u:object_r:dhcpd_exec_t,s0) + +/var/lib/dhcp(3)?/dhcpd\.leases.* -- context_template(system_u:object_r:dhcpd_state_t,s0) + +/var/run/dhcpd\.pid -d context_template(system_u:object_r:dhcpd_var_run_t,s0) diff --git a/refpolicy/policy/modules/services/dhcpd.if b/refpolicy/policy/modules/services/dhcpd.if new file mode 100644 index 00000000..4a40fbcf --- /dev/null +++ b/refpolicy/policy/modules/services/dhcpd.if @@ -0,0 +1,20 @@ +## Dynamic host configuration protocol (DHCP) server + +######################################## +## +## Set the attributes of the DCHP +## server state files. +## +## +## Domain allowed access. +## +# +interface(`dhcpd_setattr_state_files',` + gen_require(` + type dhcpd_state_t; + class file setattr; + ') + + sysnet_search_dhcp_state($1) + allow $1 dhcpd_state_t:file setattr; +') diff --git a/refpolicy/policy/modules/services/dhcpd.te b/refpolicy/policy/modules/services/dhcpd.te new file mode 100644 index 00000000..9958d985 --- /dev/null +++ b/refpolicy/policy/modules/services/dhcpd.te @@ -0,0 +1,136 @@ + +policy_module(dhcpd,1.0) + +######################################## +# +# Declarations +# + +type dhcpd_t; +type dhcpd_exec_t; +init_daemon_domain(dhcpd_t,dhcpd_exec_t) + +type dhcpd_state_t; +files_type(dhcpd_state_t) + +type dhcpd_tmp_t; +files_tmp_file(dhcpd_tmp_t) + +type dhcpd_var_run_t; +files_pid_file(dhcpd_var_run_t) + +######################################## +# +# Local policy +# + +dontaudit dhcpd_t self:capability { net_admin sys_tty_config }; +allow dhcpd_t self:fifo_file { read write getattr }; +allow dhcpd_t self:unix_dgram_socket create_socket_perms; +allow dhcpd_t self:unix_stream_socket create_socket_perms; +allow dhcpd_t self:netlink_route_socket r_netlink_socket_perms; +allow dhcpd_t self:tcp_socket create_stream_socket_perms; +allow dhcpd_t self:udp_socket create_socket_perms; +# Allow dhcpd_t to use packet sockets +allow dhcpd_t self:packet_socket create_socket_perms; +allow dhcpd_t self:rawip_socket create_socket_perms; + +can_exec(dhcpd_t,dhcpd_exec_t) + +allow dhcpd_t dhcpd_state_t:file create_file_perms; +sysnet_create_dhcp_state(dhcpd_t,dhcpd_state_t) + +allow dhcpd_t dhcpd_tmp_t:dir create_dir_perms; +allow dhcpd_t dhcpd_tmp_t:file create_file_perms; +files_create_tmp_files(dhcpd_t, dhcpd_tmp_t, { file dir }) + +allow dhcpd_t dhcpd_var_run_t:file create_file_perms; +files_create_pid(dhcpd_t,dhcpd_var_run_t) + +kernel_read_system_state(dhcpd_t) +kernel_read_kernel_sysctl(dhcpd_t) + +corenet_tcp_sendrecv_all_if(dhcpd_t) +corenet_udp_sendrecv_all_if(dhcpd_t) +corenet_raw_sendrecv_all_if(dhcpd_t) +corenet_tcp_sendrecv_all_nodes(dhcpd_t) +corenet_udp_sendrecv_all_nodes(dhcpd_t) +corenet_raw_sendrecv_all_nodes(dhcpd_t) +corenet_tcp_sendrecv_all_ports(dhcpd_t) +corenet_udp_sendrecv_all_ports(dhcpd_t) +corenet_tcp_bind_all_nodes(dhcpd_t) +corenet_udp_bind_all_nodes(dhcpd_t) +corenet_udp_bind_dhcpd_port(dhcpd_t) +corenet_udp_bind_pxe_port(dhcpd_t) + +dev_read_sysfs(dhcpd_t) +dev_read_rand(dhcpd_t) +dev_read_urand(dhcpd_t) + +fs_getattr_all_fs(dhcpd_t) +fs_search_auto_mountpoints(dhcpd_t) + +term_dontaudit_use_console(dhcpd_t) + +corecmd_exec_bin(dhcpd_t) +corecmd_exec_sbin(dhcpd_t) + +domain_use_wide_inherit_fd(dhcpd_t) + +files_read_etc_files(dhcpd_t) +files_read_usr_files(dhcpd_t) +files_read_etc_runtime_files(dhcpd_t) +files_search_var_lib(dhcpd_t) + +init_use_fd(dhcpd_t) +init_use_script_pty(dhcpd_t) + +libs_use_ld_so(dhcpd_t) +libs_use_shared_libs(dhcpd_t) + +logging_send_syslog_msg(dhcpd_t) + +miscfiles_read_localization(dhcpd_t) + +sysnet_read_config(dhcpd_t) +sysnet_read_dhcp_config(dhcpd_t) + +userdom_dontaudit_use_unpriv_user_fd(dhcpd_t) +userdom_dontaudit_search_sysadm_home_dir(dhcpd_t) + +ifdef(`distro_gentoo',` + allow dhcpd_t self:capability { chown dac_override setgid setuid sys_chroot }; +') + +ifdef(`targeted_policy',` + term_dontaudit_use_unallocated_tty(dhcpd_t) + term_dontaudit_use_generic_pty(dhcpd_t) + files_dontaudit_read_root_file(dhcpd_t) +') + +optional_policy(`bind.te',` + # used for dynamic DNS + bind_read_dnssec_keys(dhcpd_t) +') + +optional_policy(`mount.te',` + mount_send_nfs_client_request(dhcpd_t) +') + +optional_policy(`nis.te',` + nis_use_ypbind(dhcpd_t) +') + +optional_policy(`selinuxutil.te',` + seutil_sigchld_newrole(dhcpd_t) +') + +optional_policy(`udev.te',` + udev_read_db(dhcpd_t) +') + +ifdef(`TODO',` +optional_policy(`rhgb.te',` + rhgb_domain(dhcpd_t) +') +') dnl end TODO diff --git a/refpolicy/policy/modules/system/init.te b/refpolicy/policy/modules/system/init.te index 8eba00e9..c5d37a52 100644 --- a/refpolicy/policy/modules/system/init.te +++ b/refpolicy/policy/modules/system/init.te @@ -326,6 +326,12 @@ ifdef(`distro_debian', ` files_setattr_etc_dir(initrc_t) ') +ifdef(`distro_gentoo',` + optional_policy(`dhcp.te',` + dhcpd_setattr_state_files(initrc_t) + ') +') + ifdef(`distro_redhat',` # this is from kmodule, which should get its own policy: allow initrc_t self:capability sys_admin; diff --git a/refpolicy/policy/modules/system/sysnetwork.fc b/refpolicy/policy/modules/system/sysnetwork.fc index ff423c0a..b3f389ae 100644 --- a/refpolicy/policy/modules/system/sysnetwork.fc +++ b/refpolicy/policy/modules/system/sysnetwork.fc @@ -10,9 +10,11 @@ /etc/dhclient.*conf -- context_template(system_u:object_r:dhcp_etc_t,s0) /etc/dhclient-script -- context_template(system_u:object_r:dhcp_etc_t,s0) /etc/dhcpc.* context_template(system_u:object_r:dhcp_etc_t,s0) +/etc/dhcpd\.conf -- context_template(system_u:object_r:dhcp_etc_t,s0) /etc/resolv\.conf.* -- context_template(system_u:object_r:net_conf_t,s0) /etc/yp\.conf.* -- context_template(system_u:object_r:net_conf_t,s0) +/etc/dhcp3(/.*)? context_template(system_u:object_r:dhcp_etc_t,s0) /etc/dhcp3?/dhclient.* context_template(system_u:object_r:dhcp_etc_t,s0) # diff --git a/refpolicy/policy/modules/system/sysnetwork.if b/refpolicy/policy/modules/system/sysnetwork.if index 7373da24..f0d486d6 100644 --- a/refpolicy/policy/modules/system/sysnetwork.if +++ b/refpolicy/policy/modules/system/sysnetwork.if @@ -268,3 +268,80 @@ interface(`sysnet_run_ifconfig',` role $2 types ifconfig_t; allow ifconfig_t $3:chr_file rw_term_perms; ') + +######################################## +## +## Read the DHCP configuration files. +## +## +## Domain allowed access. +## +# +interface(`sysnet_read_dhcp_config',` + gen_require(` + type dhcp_etc_t; + class dir search; + class file { getattr read }; + ') + + files_search_etc($1) + allow $1 dhcp_etc_t:dir search; + allow $1 dhcp_etc_t:file { getattr read }; +') + +######################################## +## +## Search the DHCP state data directory. +## +## +## Domain allowed access. +## +# +interface(`sysnet_search_dhcp_state',` + gen_require(` + type dhcp_state_t; + class dir search; + ') + + files_search_var_lib($1) + allow $1 dhcp_state_t:dir search; +') + +######################################## +## +## Create DHCP state data. +## +## +##

+## Create DHCP state data. +##

+##

+## This is added for DHCP server, as +## the server and client put their state +## files in the same directory. +##

+## +## +## Domain allowed access. +## +## +## The type of the object to be created +## +## +## The object class. If not specified, file is used. +## +# +interface(`sysnet_create_dhcp_state',` + gen_require(` + type dhcp_state_t; + class dir rw_dir_perms; + ') + + files_search_var_lib($1) + allow $1 dhcp_state_t:dir rw_dir_perms; + ifelse(`$3',`',` + type_transition $1 dhcp_state_t:file $2; + ',` + type_transition $1 dhcp_state_t:$3 $2; + ') +')