path: root/policy/modules/contrib/cron.te

policy_module(cron, 2.5.10)

gen_require(`
	class passwd rootok;
')

########################################
#
# Declarations
#

## <desc>
##	<p>
##	Determine whether system cron jobs
##	can relabel filesystem for
##	restoring file contexts.
##	</p>
## </desc>
gen_tunable(cron_can_relabel, false)

## <desc>
##	<p>
##	Determine whether crond can execute jobs
##	in the user domain as opposed to the
##	the generic cronjob domain.
##	</p>
## </desc>
gen_tunable(cron_userdomain_transition, false)

## <desc>
##	<p>
##	Determine whether extra rules
##	should be enabled to support fcron.
##	</p>
## </desc>
gen_tunable(fcron_crond, false)

attribute cron_spool_type;
attribute crontab_domain;

type anacron_exec_t;
application_executable_file(anacron_exec_t)

type cron_spool_t;
files_type(cron_spool_t)
mta_system_content(cron_spool_t)

type cron_var_lib_t;
files_type(cron_var_lib_t)

type cron_var_run_t;
files_pid_file(cron_var_run_t)

type cron_log_t;
logging_log_file(cron_log_t)

type cronjob_t;
typealias cronjob_t alias { user_crond_t staff_crond_t sysadm_crond_t };
typealias cronjob_t alias { auditadm_crond_t secadm_crond_t };
domain_type(cronjob_t)
domain_cron_exemption_target(cronjob_t)
corecmd_shell_entry_type(cronjob_t)
ubac_constrained(cronjob_t)

type crond_t;
type crond_exec_t;
init_daemon_domain(crond_t, crond_exec_t)
domain_interactive_fd(crond_t)
domain_cron_exemption_source(crond_t)

type crond_initrc_exec_t;
init_script_file(crond_initrc_exec_t)

type crond_tmp_t;
files_tmp_file(crond_tmp_t)
files_poly_parent(crond_tmp_t)
mta_system_content(crond_tmp_t)

type crond_var_run_t;
files_pid_file(crond_var_run_t)
mta_system_content(crond_var_run_t)

type crontab_exec_t;
application_executable_file(crontab_exec_t)

cron_common_crontab_template(admin_crontab)
typealias admin_crontab_t alias sysadm_crontab_t;
typealias admin_crontab_tmp_t alias sysadm_crontab_tmp_t;

cron_common_crontab_template(crontab)
typealias crontab_t alias { user_crontab_t staff_crontab_t };
typealias crontab_t alias { auditadm_crontab_t secadm_crontab_t };
typealias crontab_tmp_t alias { user_crontab_tmp_t staff_crontab_tmp_t };
typealias crontab_tmp_t alias { auditadm_crontab_tmp_t secadm_crontab_tmp_t };

type system_cron_spool_t, cron_spool_type;
files_type(system_cron_spool_t)
mta_system_content(system_cron_spool_t)

type system_cronjob_t alias system_crond_t;
init_daemon_domain(system_cronjob_t, anacron_exec_t)
corecmd_shell_entry_type(system_cronjob_t)
domain_entry_file(system_cronjob_t, system_cron_spool_t)

type system_cronjob_lock_t alias system_crond_lock_t;
files_lock_file(system_cronjob_lock_t)

type system_cronjob_tmp_t alias system_crond_tmp_t;
files_tmp_file(system_cronjob_tmp_t)

type system_cronjob_var_lib_t;
files_type(system_cronjob_var_lib_t)

type system_cronjob_var_run_t;
files_pid_file(system_cronjob_var_run_t)

type user_cron_spool_t, cron_spool_type;
typealias user_cron_spool_t alias { staff_cron_spool_t sysadm_cron_spool_t unconfined_cron_spool_t };
typealias user_cron_spool_t alias { auditadm_cron_spool_t secadm_cron_spool_t };
files_type(user_cron_spool_t)
ubac_constrained(user_cron_spool_t)
mta_system_content(user_cron_spool_t)

ifdef(`distro_gentoo',`
	# Logging for atd jobs
	domain_interactive_fd(cronjob_t)
	domain_interactive_fd(system_cronjob_t)

	logging_syslog_managed_log_file(cron_log_t, "cron.log")
')

ifdef(`enable_mcs',`
	init_ranged_daemon_domain(crond_t, crond_exec_t, s0 - mcs_systemhigh)
')

##############################
#
# Common crontab local policy
#

allow crontab_domain self:capability { fowner setuid setgid chown dac_override };
allow crontab_domain self:process { getcap setsched signal_perms };
allow crontab_domain self:fifo_file rw_fifo_file_perms;

manage_files_pattern(crontab_domain, { cron_spool_t user_cron_spool_t }, user_cron_spool_t)
filetrans_pattern(crontab_domain, cron_spool_t, user_cron_spool_t, file)

allow crontab_domain cron_spool_t:dir setattr_dir_perms;

allow crontab_domain crond_t:process signal;
allow crontab_domain crond_var_run_t:file read_file_perms;

kernel_read_system_state(crontab_domain)

selinux_dontaudit_search_fs(crontab_domain)

files_list_spool(crontab_domain)
files_read_etc_files(crontab_domain)
files_read_usr_files(crontab_domain)
files_search_pids(crontab_domain)

fs_getattr_xattr_fs(crontab_domain)
fs_manage_cgroup_dirs(crontab_domain)
fs_rw_cgroup_files(crontab_domain)

domain_use_interactive_fds(crontab_domain)

fs_dontaudit_rw_anon_inodefs_files(crontab_domain)

auth_rw_var_auth(crontab_domain)

logging_send_syslog_msg(crontab_domain)
logging_send_audit_msgs(crontab_domain)
logging_set_loginuid(crontab_domain)

init_dontaudit_write_utmp(crontab_domain)
init_read_utmp(crontab_domain)
init_read_state(crontab_domain)

miscfiles_read_localization(crontab_domain)

seutil_read_config(crontab_domain)

userdom_manage_user_tmp_dirs(crontab_domain)
userdom_manage_user_tmp_files(crontab_domain)
userdom_use_user_terminals(crontab_domain)
userdom_read_user_home_content_files(crontab_domain)
userdom_read_user_home_content_symlinks(crontab_domain)

tunable_policy(`fcron_crond',`
	dontaudit crontab_domain crond_t:process signal;
')

########################################
#
# Admin local policy
#

allow admin_crontab_t crond_t:process signal;

selinux_get_fs_mount(admin_crontab_t)
selinux_validate_context(admin_crontab_t)
selinux_compute_access_vector(admin_crontab_t)
selinux_compute_create_context(admin_crontab_t)
selinux_compute_relabel_context(admin_crontab_t)
selinux_compute_user_contexts(admin_crontab_t)

tunable_policy(`fcron_crond',`
	allow admin_crontab_t self:process setfscreate;
')

########################################
#
# Daemon local policy
#

allow crond_t self:capability { dac_override chown fowner setgid setuid sys_nice dac_read_search };
dontaudit crond_t self:capability { sys_resource sys_tty_config };
allow crond_t self:process ~{ ptrace setcurrent setexec setfscreate execmem execstack execheap };
allow crond_t self:process { setexec setfscreate };
allow crond_t self:fd use;
allow crond_t self:fifo_file rw_fifo_file_perms;
allow crond_t self:unix_dgram_socket sendto;
allow crond_t self:unix_stream_socket { accept connectto listen };
allow crond_t self:shm create_shm_perms;
allow crond_t self:sem create_sem_perms;
allow crond_t self:msgq create_msgq_perms;
allow crond_t self:msg { send receive };
allow crond_t self:key { search write link };
dontaudit crond_t self:netlink_audit_socket nlmsg_tty_audit;

allow crond_t cron_log_t:file { append_file_perms create_file_perms setattr_file_perms };
logging_log_filetrans(crond_t, cron_log_t, file)

manage_files_pattern(crond_t, crond_var_run_t, crond_var_run_t)
files_pid_filetrans(crond_t, crond_var_run_t, file)

manage_files_pattern(crond_t, cron_spool_t, cron_spool_t)

manage_dirs_pattern(crond_t, crond_tmp_t, crond_tmp_t)
manage_files_pattern(crond_t, crond_tmp_t, crond_tmp_t)
files_tmp_filetrans(crond_t, crond_tmp_t, { dir file })

list_dirs_pattern(crond_t, system_cron_spool_t, system_cron_spool_t)
read_files_pattern(crond_t, system_cron_spool_t, system_cron_spool_t)

rw_dirs_pattern(crond_t, user_cron_spool_t, user_cron_spool_t)
read_files_pattern(crond_t, user_cron_spool_t, user_cron_spool_t)
manage_lnk_files_pattern(crond_t, user_cron_spool_t, user_cron_spool_t)

allow crond_t system_cronjob_t:process transition;
allow crond_t system_cronjob_t:fd use;
allow crond_t system_cronjob_t:key manage_key_perms;

dontaudit crond_t { cronjob_t system_cronjob_t }:process { noatsecure siginh rlimitinh };

domtrans_pattern(crond_t, anacron_exec_t, system_cronjob_t)

kernel_read_kernel_sysctls(crond_t)
kernel_read_fs_sysctls(crond_t)
kernel_search_key(crond_t)

corecmd_exec_shell(crond_t)
corecmd_exec_bin(crond_t)
corecmd_list_bin(crond_t)

dev_read_sysfs(crond_t)
dev_read_urand(crond_t)

domain_use_interactive_fds(crond_t)
domain_subj_id_change_exemption(crond_t)
domain_role_change_exemption(crond_t)

fs_getattr_all_fs(crond_t)
fs_list_inotifyfs(crond_t)
fs_manage_cgroup_dirs(crond_t)
fs_rw_cgroup_files(crond_t)
fs_search_auto_mountpoints(crond_t)

files_read_usr_files(crond_t)
files_read_etc_runtime_files(crond_t)
files_read_generic_spool(crond_t)
files_list_usr(crond_t)
files_search_var_lib(crond_t)
files_search_default(crond_t)

mls_fd_share_all_levels(crond_t)
mls_file_read_all_levels(crond_t)
mls_file_write_all_levels(crond_t)
mls_process_set_level(crond_t)
mls_trusted_object(crond_t)

selinux_get_fs_mount(crond_t)
selinux_validate_context(crond_t)
selinux_compute_access_vector(crond_t)
selinux_compute_create_context(crond_t)
selinux_compute_relabel_context(crond_t)
selinux_compute_user_contexts(crond_t)

init_read_state(crond_t)
init_rw_utmp(crond_t)
init_spec_domtrans_script(crond_t)

auth_domtrans_chk_passwd(crond_t)
auth_manage_var_auth(crond_t)
auth_use_nsswitch(crond_t)

logging_send_audit_msgs(crond_t)
logging_send_syslog_msg(crond_t)
logging_set_loginuid(crond_t)

seutil_read_config(crond_t)
seutil_read_default_contexts(crond_t)

miscfiles_read_localization(crond_t)

userdom_list_user_home_dirs(crond_t)

tunable_policy(`cron_userdomain_transition',`
	dontaudit crond_t cronjob_t:process transition;
	dontaudit crond_t cronjob_t:fd use;
	dontaudit crond_t cronjob_t:key manage_key_perms;
',`
	allow crond_t cronjob_t:process transition;
	allow crond_t cronjob_t:fd use;
	allow crond_t cronjob_t:key manage_key_perms;
')

ifdef(`distro_debian',`
	allow crond_t self:process setrlimit;

	optional_policy(`
		logwatch_search_cache_dir(crond_t)
	')
')

ifdef(`distro_redhat',`
	optional_policy(`
		rpm_manage_log(crond_t)
	')
')

tunable_policy(`allow_polyinstantiation',`
	files_polyinstantiate_all(crond_t)
')

tunable_policy(`fcron_crond',`
	allow crond_t { system_cron_spool_t user_cron_spool_t }:file manage_file_perms;
')

optional_policy(`
	apache_search_sys_content(crond_t)
')

optional_policy(`
	dbus_system_bus_client(crond_t)

	optional_policy(`
		hal_dbus_chat(crond_t)
	')

	optional_policy(`
		unconfined_dbus_send(crond_t)
	')
')

optional_policy(`
	amanda_search_var_lib(crond_t)
')

optional_policy(`
	amavis_search_lib(crond_t)
')

optional_policy(`
	djbdns_search_tinydns_keys(crond_t)
	djbdns_link_tinydns_keys(crond_t)
')

optional_policy(`
	hal_write_log(crond_t)
')

optional_policy(`
	locallogin_search_keys(crond_t)
	locallogin_link_keys(crond_t)
')

optional_policy(`
	mta_send_mail(crond_t)
')

optional_policy(`
	munin_search_lib(crond_t)
')

optional_policy(`
	postgresql_search_db(crond_t)
')

optional_policy(`
	rpc_search_nfs_state_data(crond_t)
')

optional_policy(`
	rpm_read_pipes(crond_t)
')

optional_policy(`
	seutil_sigchld_newrole(crond_t)
')

optional_policy(`
	udev_read_db(crond_t)
')

########################################
#
# System local policy
#

allow system_cronjob_t self:capability { dac_override dac_read_search chown setgid setuid fowner net_bind_service fsetid sys_nice };
allow system_cronjob_t self:process { signal_perms getsched setsched };
allow system_cronjob_t self:fifo_file rw_fifo_file_perms;
allow system_cronjob_t self:passwd rootok;

allow system_cronjob_t cron_log_t:file { append_file_perms create_file_perms setattr_file_perms };
logging_log_filetrans(system_cronjob_t, cron_log_t, file)

allow system_cronjob_t cron_var_lib_t:file { manage_file_perms relabel_file_perms };
files_var_lib_filetrans(system_cronjob_t, cron_var_lib_t, file)

allow system_cronjob_t cron_var_run_t:file manage_file_perms;
files_pid_filetrans(system_cronjob_t, cron_var_run_t, file)

manage_files_pattern(system_cronjob_t, system_cron_spool_t, system_cron_spool_t)

allow system_cronjob_t system_cronjob_lock_t:file manage_file_perms;
files_lock_filetrans(system_cronjob_t, system_cronjob_lock_t, file)

manage_files_pattern(system_cronjob_t, crond_tmp_t, system_cronjob_tmp_t)
manage_lnk_files_pattern(system_cronjob_t, crond_tmp_t, system_cronjob_tmp_t)
filetrans_pattern(system_cronjob_t, crond_tmp_t, system_cronjob_tmp_t, { file lnk_file })
files_tmp_filetrans(system_cronjob_t, system_cronjob_tmp_t, file)

manage_files_pattern(system_cronjob_t, system_cronjob_var_lib_t, system_cronjob_var_lib_t)

allow system_cronjob_t crond_t:fd use;
allow system_cronjob_t crond_t:fifo_file rw_fifo_file_perms;
allow system_cronjob_t crond_t:process sigchld;

allow system_cronjob_t cron_spool_t:dir list_dir_perms;
allow system_cronjob_t cron_spool_t:file rw_file_perms;

kernel_read_kernel_sysctls(system_cronjob_t)
kernel_read_network_state(system_cronjob_t)
kernel_read_system_state(system_cronjob_t)
kernel_read_software_raid_state(system_cronjob_t)

files_dontaudit_search_boot(system_cronjob_t)

corecmd_exec_all_executables(system_cronjob_t)

corenet_all_recvfrom_unlabeled(system_cronjob_t)
corenet_all_recvfrom_netlabel(system_cronjob_t)
corenet_tcp_sendrecv_generic_if(system_cronjob_t)
corenet_udp_sendrecv_generic_if(system_cronjob_t)
corenet_tcp_sendrecv_generic_node(system_cronjob_t)
corenet_udp_sendrecv_generic_node(system_cronjob_t)
corenet_tcp_sendrecv_all_ports(system_cronjob_t)
corenet_udp_sendrecv_all_ports(system_cronjob_t)

dev_getattr_all_blk_files(system_cronjob_t)
dev_getattr_all_chr_files(system_cronjob_t)
dev_read_urand(system_cronjob_t)
dev_read_sysfs(system_cronjob_t)

fs_getattr_all_fs(system_cronjob_t)
fs_getattr_all_files(system_cronjob_t)
fs_getattr_all_symlinks(system_cronjob_t)
fs_getattr_all_pipes(system_cronjob_t)
fs_getattr_all_sockets(system_cronjob_t)

domain_dontaudit_read_all_domains_state(system_cronjob_t)

files_exec_etc_files(system_cronjob_t)
files_read_etc_runtime_files(system_cronjob_t)
files_list_all(system_cronjob_t)
files_getattr_all_dirs(system_cronjob_t)
files_getattr_all_files(system_cronjob_t)
files_getattr_all_symlinks(system_cronjob_t)
files_getattr_all_pipes(system_cronjob_t)
files_getattr_all_sockets(system_cronjob_t)
files_read_usr_files(system_cronjob_t)
files_read_var_files(system_cronjob_t)
files_dontaudit_search_pids(system_cronjob_t)
files_manage_generic_spool(system_cronjob_t)
files_create_boot_flag(system_cronjob_t)

mls_file_read_to_clearance(system_cronjob_t)

init_use_script_fds(system_cronjob_t)
init_domtrans_script(system_cronjob_t)

auth_use_nsswitch(system_cronjob_t)

libs_exec_lib_files(system_cronjob_t)
libs_exec_ld_so(system_cronjob_t)

logging_read_generic_logs(system_cronjob_t)
logging_send_audit_msgs(system_cronjob_t)
logging_send_syslog_msg(system_cronjob_t)

miscfiles_read_localization(system_cronjob_t)

seutil_read_config(system_cronjob_t)

ifdef(`distro_redhat',`
	optional_policy(`
		rpm_manage_log(system_cronjob_t)
	')
')

tunable_policy(`cron_can_relabel',`
	seutil_domtrans_setfiles(system_cronjob_t)
',`
	selinux_get_fs_mount(system_cronjob_t)
	selinux_validate_context(system_cronjob_t)
	selinux_compute_access_vector(system_cronjob_t)
	selinux_compute_create_context(system_cronjob_t)
	selinux_compute_relabel_context(system_cronjob_t)
	selinux_compute_user_contexts(system_cronjob_t)
	seutil_read_file_contexts(system_cronjob_t)
')

optional_policy(`
	apache_exec_modules(system_cronjob_t)
	apache_read_config(system_cronjob_t)
	apache_read_log(system_cronjob_t)
	apache_read_sys_content(system_cronjob_t)
')

optional_policy(`
	cyrus_manage_data(system_cronjob_t)
')

optional_policy(`
	dbus_system_bus_client(system_cronjob_t)

	optional_policy(`
		networkmanager_dbus_chat(system_cronjob_t)
	')
')

optional_policy(`
	exim_read_spool_files(system_cronjob_t)
')

optional_policy(`
	ftp_read_log(system_cronjob_t)
')

optional_policy(`
	inn_manage_log(system_cronjob_t)
	inn_manage_pid(system_cronjob_t)
	inn_read_config(system_cronjob_t)
')

optional_policy(`
	livecd_read_tmp_files(system_cronjob_t)
')

optional_policy(`
	lpd_list_spool(system_cronjob_t)
')

optional_policy(`
	mrtg_append_create_logs(system_cronjob_t)
')

optional_policy(`
	mta_read_config(system_cronjob_t)
	mta_send_mail(system_cronjob_t)
')

optional_policy(`
	mysql_read_config(system_cronjob_t)
')

optional_policy(`
	postfix_read_config(system_cronjob_t)
')

optional_policy(`
	prelink_delete_cache(system_cronjob_t)
	prelink_manage_lib(system_cronjob_t)
	prelink_manage_log(system_cronjob_t)
	prelink_read_cache(system_cronjob_t)
	prelink_relabelfrom_lib(system_cronjob_t)
')

optional_policy(`
	samba_read_config(system_cronjob_t)
	samba_read_log(system_cronjob_t)
')

optional_policy(`
	spamassassin_manage_lib_files(system_cronjob_t)
')

optional_policy(`
	sysstat_manage_log(system_cronjob_t)
')

optional_policy(`
	userdom_user_home_dir_filetrans_user_home_content(system_cronjob_t, { dir file lnk_file fifo_file sock_file })
')

########################################
#
# Cronjob local policy
#

allow cronjob_t self:process { signal_perms setsched };
allow cronjob_t self:fifo_file rw_fifo_file_perms;
allow cronjob_t self:unix_stream_socket create_stream_socket_perms;
allow cronjob_t self:unix_dgram_socket create_socket_perms;

kernel_read_system_state(cronjob_t)
kernel_read_kernel_sysctls(cronjob_t)

files_dontaudit_search_boot(cronjob_t)

corenet_all_recvfrom_unlabeled(cronjob_t)
corenet_all_recvfrom_netlabel(cronjob_t)
corenet_tcp_sendrecv_generic_if(cronjob_t)
corenet_udp_sendrecv_generic_if(cronjob_t)
corenet_tcp_sendrecv_generic_node(cronjob_t)
corenet_udp_sendrecv_generic_node(cronjob_t)
corenet_tcp_sendrecv_all_ports(cronjob_t)
corenet_udp_sendrecv_all_ports(cronjob_t)

corenet_sendrecv_all_client_packets(cronjob_t)
corenet_tcp_connect_all_ports(cronjob_t)

corecmd_exec_all_executables(cronjob_t)

dev_read_urand(cronjob_t)

fs_getattr_all_fs(cronjob_t)

domain_dontaudit_read_all_domains_state(cronjob_t)
domain_dontaudit_getattr_all_domains(cronjob_t)

files_exec_etc_files(cronjob_t)
files_read_etc_runtime_files(cronjob_t)
files_read_var_files(cronjob_t)
files_read_usr_files(cronjob_t)
files_search_spool(cronjob_t)
files_dontaudit_search_pids(cronjob_t)

libs_exec_lib_files(cronjob_t)
libs_exec_ld_so(cronjob_t)

logging_search_logs(cronjob_t)

seutil_read_config(cronjob_t)

miscfiles_read_localization(cronjob_t)

userdom_manage_user_tmp_files(cronjob_t)
userdom_manage_user_tmp_symlinks(cronjob_t)
userdom_manage_user_tmp_pipes(cronjob_t)
userdom_manage_user_tmp_sockets(cronjob_t)
userdom_exec_user_home_content_files(cronjob_t)
userdom_manage_user_home_content_files(cronjob_t)
userdom_manage_user_home_content_symlinks(cronjob_t)
userdom_manage_user_home_content_pipes(cronjob_t)
userdom_manage_user_home_content_sockets(cronjob_t)

tunable_policy(`cron_userdomain_transition',`
	dontaudit cronjob_t crond_t:fd use;
	dontaudit cronjob_t crond_t:fifo_file rw_fifo_file_perms;
	dontaudit cronjob_t crond_t:process sigchld;

	dontaudit cronjob_t user_cron_spool_t:file entrypoint;
',`
	allow cronjob_t crond_t:fd use;
	allow cronjob_t crond_t:fifo_file rw_fifo_file_perms;
	allow cronjob_t crond_t:process sigchld;

	allow cronjob_t user_cron_spool_t:file entrypoint;
')

optional_policy(`
	nis_use_ypbind(cronjob_t)
')

########################################
#
# Unconfined local policy
#

optional_policy(`
	type unconfined_cronjob_t;
	domain_type(unconfined_cronjob_t)
	domain_cron_exemption_target(unconfined_cronjob_t)

	dontaudit crond_t unconfined_cronjob_t:process { noatsecure siginh rlimitinh };

	unconfined_domain(unconfined_cronjob_t)

	tunable_policy(`cron_userdomain_transition',`
		dontaudit crond_t unconfined_cronjob_t:process transition;
		dontaudit crond_t unconfined_cronjob_t:fd use;
		dontaudit crond_t unconfined_cronjob_t:key manage_key_perms;
	',`
		allow crond_t unconfined_cronjob_t:process transition;
		allow crond_t unconfined_cronjob_t:fd use;
		allow crond_t unconfined_cronjob_t:key manage_key_perms;
	')
')