policy_module(cron, 2.2.1)

gen_require(`

	class passwd rootok;

')

########################################

#

# Declarations

#

## <desc>

##	

##	Allow system cron jobs to relabel filesystem

##	for restoring file contexts.

##	

## </desc>

gen_tunable(cron_can_relabel, false)

## <desc>

##	

##	Enable extra rules in the cron domain

##	to support fcron.

##	

## </desc>

gen_tunable(fcron_crond, false)

attribute crontab_domain;

attribute cron_spool_type;

type anacron_exec_t;

application_executable_file(anacron_exec_t)

type cron_spool_t;

files_spool_file(cron_spool_t)

# var/lib files

type cron_var_lib_t;

files_type(cron_var_lib_t)

type cron_var_run_t;

files_pid_file(cron_var_run_t)

# var/log files

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_unit_file_t;

systemd_unit_file(crond_unit_file_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 };

allow admin_crontab_t crond_t:process signal;

type system_cron_spool_t, cron_spool_type;

files_spool_file(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)

role system_r types system_cronjob_t;

domtrans_pattern(crond_t, anacron_exec_t, system_cronjob_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 unconfined_cronjob_t;

domain_type(unconfined_cronjob_t)

domain_cron_exemption_target(unconfined_cronjob_t)

# Type of user crontabs once moved to cron spool.

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_spool_file(user_cron_spool_t)

ubac_constrained(user_cron_spool_t)

mta_system_content(user_cron_spool_t)

type system_cronjob_var_lib_t;

files_type(system_cronjob_var_lib_t)

typealias system_cronjob_var_lib_t alias system_crond_var_lib_t;

type system_cronjob_var_run_t;

files_pid_file(system_cronjob_var_run_t)

ifdef(`enable_mcs',`

	init_ranged_daemon_domain(crond_t, crond_exec_t, s0 - mcs_systemhigh)

')

########################################

#

# Admin crontab local policy

#

# Allow our crontab domain to unlink a user cron spool file.

allow admin_crontab_t user_cron_spool_t:file { read_file_perms delete_file_perms };

# Manipulate other users crontab.

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',`

	# fcron wants an instant update of a crontab change for the administrator

	# also crontab does a security check for crontab -u

	allow admin_crontab_t self:process setfscreate;

')

########################################

#

# Cron 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 create_socket_perms;

allow crond_t self:unix_stream_socket create_stream_socket_perms;

allow crond_t self:unix_dgram_socket sendto;

allow crond_t self:unix_stream_socket connectto;

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;

manage_files_pattern(crond_t, cron_log_t, cron_log_t)

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, { file dir })

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)

kernel_read_kernel_sysctls(crond_t)

kernel_read_fs_sysctls(crond_t)

kernel_search_key(crond_t)

dev_read_sysfs(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)

dev_read_urand(crond_t)

fs_getattr_all_fs(crond_t)

fs_search_auto_mountpoints(crond_t)

fs_list_inotifyfs(crond_t)

# need auth_chkpwd to check for locked accounts.

auth_domtrans_chk_passwd(crond_t)

auth_manage_var_auth(crond_t)

corecmd_exec_shell(crond_t)

corecmd_list_bin(crond_t)

corecmd_exec_bin(crond_t)

corecmd_read_bin_symlinks(crond_t)

domain_use_interactive_fds(crond_t)

domain_subj_id_change_exemption(crond_t)

domain_role_change_exemption(crond_t)

files_read_etc_runtime_files(crond_t)

files_read_generic_spool(crond_t)

files_list_usr(crond_t)

# Read from /var/spool/cron.

files_search_var_lib(crond_t)

files_search_default(crond_t)

fs_manage_cgroup_dirs(crond_t)

fs_manage_cgroup_files(crond_t)

# needed by "crontab -e"

mls_file_read_all_levels(crond_t)

mls_file_write_all_levels(crond_t)

# needed because of kernel check of transition

mls_process_set_level(crond_t)

# to make cronjob working

mls_fd_share_all_levels(crond_t)

mls_trusted_object(crond_t)

init_read_state(crond_t)

init_rw_utmp(crond_t)

init_spec_domtrans_script(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)

seutil_sigchld_newrole(crond_t)

userdom_use_unpriv_users_fds(crond_t)

# Not sure why this is needed

userdom_list_user_home_dirs(crond_t)

userdom_list_admin_dir(crond_t)

userdom_manage_all_users_keys(crond_t)

mta_send_mail(crond_t)

mta_system_content(cron_spool_t)

ifdef(`distro_debian',`

	# pam_limits is used

	allow crond_t self:process setrlimit;

')

optional_policy(`

	logwatch_search_cache_dir(crond_t)

')

ifdef(`distro_redhat',`

	# Run the rpm program in the rpm_t domain. Allow creation of RPM log files

	# via redirection of standard out.

	optional_policy(`

		rpm_manage_log(crond_t)

	')

')

tunable_policy(`polyinstantiation_enabled',`

	files_polyinstantiate_all(crond_t)

')

tunable_policy(`fcron_crond', `

	allow crond_t system_cron_spool_t:file manage_file_perms;

')

optional_policy(`

	apache_search_sys_content(crond_t)

')

optional_policy(`

	djbdns_search_tinydns_keys(crond_t)

	djbdns_link_tinydns_keys(crond_t)

')

optional_policy(`

	locallogin_search_keys(crond_t)

	locallogin_link_keys(crond_t)

')

optional_policy(`

	# these should probably be unconfined_crond_t

	dbus_system_bus_client(crond_t)

	init_dbus_send_script(crond_t)

	init_dbus_chat(crond_t)

')

optional_policy(`

	amanda_search_var_lib(crond_t)

')

optional_policy(`

	amavis_search_lib(crond_t)

')

optional_policy(`

	hal_dbus_chat(crond_t)

	hal_write_log(crond_t)

	hal_dbus_chat(system_cronjob_t)

')

optional_policy(`

	# cjp: why?

	munin_search_lib(crond_t)

')

optional_policy(`

	rpc_search_nfs_state_data(crond_t)

')

optional_policy(`

	# Commonly used from postinst scripts

	rpm_read_pipes(crond_t)

')

optional_policy(`

	# allow crond to find /usr/lib/postgresql/bin/do.maintenance

	postgresql_search_db(crond_t)

')

optional_policy(`

	systemd_use_fds_logind(crond_t)

	systemd_write_inherited_logind_sessions_pipes(crond_t)

')

optional_policy(`

	udev_read_db(crond_t)

')

optional_policy(`

	vnstatd_search_lib(crond_t)

')

########################################

#

# System cron process domain

#

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;

# This is to handle creation of files in /var/log directory.

#  Used currently by rpm script log files

allow system_cronjob_t cron_log_t:file manage_file_perms;

logging_log_filetrans(system_cronjob_t, cron_log_t, file)

# This is to handle /var/lib/misc directory.  Used currently

# by prelink var/lib files for cron 

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)

allow system_cronjob_t system_cron_spool_t:file read_file_perms;

mls_file_read_to_clearance(system_cronjob_t)

# anacron forces the following

manage_files_pattern(system_cronjob_t, system_cron_spool_t, system_cron_spool_t)

# The entrypoint interface is not used as this is not

# a regular entrypoint.  Since crontab files are

# not directly executed, crond must ensure that

# the crontab file has a type that is appropriate

# for the domain of the user cron job.  It

# performs an entrypoint permission check

# for this purpose.

allow system_cronjob_t system_cron_spool_t:file entrypoint;

# Permit a transition from the crond_t domain to this domain.

# The transition is requested explicitly by the modified crond 

# via setexeccon.  There is no way to set up an automatic

# transition, since crontabs are configuration files, not executables.

allow crond_t system_cronjob_t:process transition;

dontaudit crond_t system_cronjob_t:process { noatsecure siginh rlimitinh };

allow crond_t system_cronjob_t:fd use;

allow system_cronjob_t crond_t:fd use;

allow system_cronjob_t crond_t:fifo_file rw_file_perms;

allow system_cronjob_t crond_t:process sigchld;

allow crond_t system_cronjob_t:key manage_key_perms;

# Write /var/lock/makewhatis.lock.

allow system_cronjob_t system_cronjob_lock_t:file manage_file_perms;

files_lock_filetrans(system_cronjob_t, system_cronjob_lock_t, file)

# write temporary files

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)

# var/lib files for system_crond

files_search_var_lib(system_cronjob_t)

manage_files_pattern(system_cronjob_t, system_cronjob_var_lib_t, system_cronjob_var_lib_t)

# Read from /var/spool/cron.

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)

# ps does not need to access /boot when run from cron

files_dontaudit_search_boot(system_cronjob_t)

corecmd_exec_all_executables(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)

# quiet other ps operations

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_var_files(system_cronjob_t)

# for nscd:

files_dontaudit_search_pids(system_cronjob_t)

# Access other spool directories like

# /var/spool/anacron and /var/spool/slrnpull.

files_manage_generic_spool(system_cronjob_t)

files_create_boot_flag(system_cronjob_t)

init_use_script_fds(system_cronjob_t)

init_read_utmp(system_cronjob_t)

init_dontaudit_rw_utmp(system_cronjob_t)

# prelink tells init to restart it self, we either need to allow or dontaudit

init_telinit(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)

seutil_read_config(system_cronjob_t)

ifdef(`distro_redhat',`

	# Run the rpm program in the rpm_t domain. Allow creation of RPM log files

	allow crond_t system_cron_spool_t:file manage_file_perms;

	# via redirection of standard out.

	optional_policy(`

		rpm_manage_log(system_cronjob_t)

	')

')

selinux_get_fs_mount(system_cronjob_t)

tunable_policy(`cron_can_relabel',`

	seutil_domtrans_setfiles(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(`

	# Needed for certwatch

	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)

	apache_delete_cache_dirs(system_cronjob_t)

	apache_delete_cache_files(system_cronjob_t)

')

optional_policy(`

	bind_read_config(system_cronjob_t)

')

optional_policy(`

	cyrus_manage_data(system_cronjob_t)

')

optional_policy(`

	dbus_system_bus_client(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)

	mta_system_content(system_cron_spool_t)

')

optional_policy(`

	mysql_read_config(system_cronjob_t)

')

optional_policy(`

	networkmanager_dbus_chat(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_relabel_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)

	spamassassin_manage_home_client(system_cronjob_t)

')

optional_policy(`

	sysstat_manage_log(system_cronjob_t)

')

optional_policy(`

	systemd_dbus_chat_logind(system_cronjob_t)

	systemd_write_inherited_logind_sessions_pipes(system_cronjob_t)

')

optional_policy(`

	unconfined_domain(crond_t)

	unconfined_domain(system_cronjob_t)

')

optional_policy(`

	unconfined_shell_domtrans(crond_t)

	unconfined_dbus_send(crond_t)

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

')

########################################

#

# User cronjobs 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;

# The entrypoint interface is not used as this is not

# a regular entrypoint.  Since crontab files are

# not directly executed, crond must ensure that

# the crontab file has a type that is appropriate

# for the domain of the user cron job.  It

# performs an entrypoint permission check

# for this purpose.

allow cronjob_t user_cron_spool_t:file entrypoint;

# Permit a transition from the crond_t domain to this domain.

# The transition is requested explicitly by the modified crond 

# via setexeccon.  There is no way to set up an automatic

# transition, since crontabs are configuration files, not executables.

allow crond_t cronjob_t:process transition;

dontaudit crond_t cronjob_t:process { noatsecure siginh rlimitinh };

allow crond_t cronjob_t:fd use;

allow cronjob_t crond_t:fd use;

allow cronjob_t crond_t:fifo_file rw_file_perms;

allow cronjob_t crond_t:process sigchld;

kernel_read_system_state(cronjob_t)

kernel_read_kernel_sysctls(cronjob_t)

# ps does not need to access /boot when run from cron

files_dontaudit_search_boot(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_tcp_connect_all_ports(cronjob_t)

corenet_sendrecv_all_client_packets(cronjob_t)

dev_read_urand(cronjob_t)

fs_getattr_all_fs(cronjob_t)

corecmd_exec_all_executables(cronjob_t)

# quiet other ps operations

domain_dontaudit_read_all_domains_state(cronjob_t)

domain_dontaudit_getattr_all_domains(cronjob_t)

files_exec_etc_files(cronjob_t)

# for nscd:

files_dontaudit_search_pids(cronjob_t)

libs_exec_lib_files(cronjob_t)

libs_exec_ld_so(cronjob_t)

files_read_etc_runtime_files(cronjob_t)

files_read_var_files(cronjob_t)

files_search_spool(cronjob_t)

logging_search_logs(cronjob_t)

seutil_read_config(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)

# Run scripts in user home directory and access shared libs.

userdom_exec_user_home_content_files(cronjob_t)

# Access user files and dirs.

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)

#userdom_user_home_dir_filetrans_user_home_content(cronjob_t, notdevfile_class_set)

list_dirs_pattern(crond_t, user_cron_spool_t, user_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)

read_lnk_files_pattern(crond_t, user_cron_spool_t, user_cron_spool_t)

allow crond_t user_cron_spool_t:file manage_lnk_file_perms;

tunable_policy(`fcron_crond',`

	allow crond_t user_cron_spool_t:file manage_file_perms;

')

# need a per-role version of this:

#optional_policy(`

#	mono_domtrans(cronjob_t)