selinux-policy/policy/modules/services/cron.te

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policy_module(cron, 2.1.0)
gen_require(`
class passwd rootok;
')
########################################
#
# Declarations
#
## <desc>
## <p>
## Allow system cron jobs to relabel filesystem
## for restoring file contexts.
## </p>
## </desc>
gen_tunable(cron_can_relabel, false)
## <desc>
## <p>
## Enable extra rules in the cron domain
## to support fcron.
## </p>
## </desc>
gen_tunable(fcron_crond, false)
attribute cron_spool_type;
type anacron_exec_t;
application_executable_file(anacron_exec_t)
type cron_spool_t;
files_type(cron_spool_t)
# var/lib files
type cron_var_lib_t;
files_type(cron_var_lib_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_tmp_t;
files_tmp_file(crond_tmp_t)
type crond_var_run_t;
files_pid_file(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)
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;
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)
ifdef(`enable_mcs',`
init_ranged_daemon_domain(crond_t, crond_exec_t, s0 - mcs_systemhigh)
')
type unconfined_cronjob_t;
domain_type(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 };
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)
########################################
#
# Admin crontab local policy
#
# Allow our crontab domain to unlink a user cron spool file.
allow admin_crontab_t user_cron_spool_t:file { getattr read unlink };
# 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 setgid setuid sys_nice dac_read_search audit_control };
dontaudit crond_t self:capability { sys_resource sys_tty_config };
allow crond_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit 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 };
allow crond_t crond_var_run_t:file manage_file_perms;
files_pid_filetrans(crond_t, crond_var_run_t, file)
allow crond_t cron_spool_t:dir rw_dir_perms;
allow crond_t cron_spool_t:file read_file_perms;
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 })
allow crond_t system_cron_spool_t:dir list_dir_perms;
allow crond_t system_cron_spool_t:file read_file_perms;
kernel_read_kernel_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)
# need auth_chkpwd to check for locked accounts.
auth_domtrans_chk_passwd(crond_t)
corecmd_exec_shell(crond_t)
corecmd_list_bin(crond_t)
corecmd_read_bin_symlinks(crond_t)
domain_use_interactive_fds(crond_t)
files_read_etc_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)
init_rw_utmp(crond_t)
auth_use_nsswitch(crond_t)
logging_send_syslog_msg(crond_t)
seutil_read_config(crond_t)
seutil_read_default_contexts(crond_t)
seutil_sigchld_newrole(crond_t)
miscfiles_read_localization(crond_t)
userdom_use_unpriv_users_fds(crond_t)
# Not sure why this is needed
userdom_list_user_home_dirs(crond_t)
mta_send_mail(crond_t)
ifdef(`distro_debian',`
# pam_limits is used
allow crond_t self:process setrlimit;
optional_policy(`
# Debian logcheck has the home dir set to its cache
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)
')
')
optional_policy(`
locallogin_search_keys(crond_t)
locallogin_link_keys(crond_t)
')
tunable_policy(`fcron_crond', `
allow crond_t system_cron_spool_t:file manage_file_perms;
')
optional_policy(`
amavis_search_lib(crond_t)
')
optional_policy(`
hal_dbus_send(crond_t)
')
optional_policy(`
# cjp: why?
munin_search_lib(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(`
udev_read_db(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 };
allow system_cronjob_t self:process { signal_perms 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;
files_var_lib_filetrans(system_cronjob_t, cron_var_lib_t, file)
allow system_cronjob_t system_cron_spool_t:file read_file_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 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;
# 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)
# Read from /var/spool/cron.
allow system_cronjob_t cron_spool_t:dir list_dir_perms;
allow system_cronjob_t cron_spool_t:file read_file_perms;
kernel_read_kernel_sysctls(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_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)
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_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)
# 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)
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_write_initctl(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_syslog_msg(system_cronjob_t)
miscfiles_read_localization(system_cronjob_t)
miscfiles_manage_man_pages(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
# via redirection of standard out.
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(`
# 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)
')
optional_policy(`
cyrus_manage_data(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(`
mrtg_append_create_logs(system_cronjob_t)
')
optional_policy(`
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_read_cache(system_cronjob_t)
prelink_manage_log(system_cronjob_t)
prelink_delete_cache(system_cronjob_t)
')
optional_policy(`
samba_read_config(system_cronjob_t)
samba_read_log(system_cronjob_t)
#samba_read_secrets(system_cronjob_t)
')
optional_policy(`
slocate_create_append_log(system_cronjob_t)
')
optional_policy(`
# cjp: why?
squid_domtrans(system_cronjob_t)
')
optional_policy(`
sysstat_manage_log(system_cronjob_t)
')
optional_policy(`
unconfined_domain(system_cronjob_t)
userdom_user_home_dir_filetrans_user_home_content(system_cronjob_t, { dir file lnk_file fifo_file sock_file })
')
ifdef(`TODO',`
ifdef(`mta.te', `
allow system_cronjob_t mail_spool_t:lnk_file read;
allow mta_user_agent system_cronjob_t:fd use;
r_dir_file(system_mail_t, crond_tmp_t)
')
') dnl end TODO
########################################
#
# User cronjobs local policy
#
allow cronjob_t self:capability dac_override;
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_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_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_read_usr_files(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)
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)
# 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)
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)
#')
optional_policy(`
nis_use_ypbind(cronjob_t)
')
########################################
#
# Unconfined cronjobs local policy
#
optional_policy(`
unconfined_domain(unconfined_cronjob_t)
')