policy_module(cron,1.2.3)
gen_require(`
class passwd rootok;
')
########################################
#
# Declarations
#
attribute cron_spool_type;
type anacron_exec_t;
files_type(anacron_exec_t)
type cron_spool_t;
files_type(cron_spool_t)
type crond_t;
# real declaration moved to mls until
# range_transition works in loadable modules
gen_require(`
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;
files_type(crontab_exec_t)
type system_cron_spool_t, cron_spool_type;
files_type(system_cron_spool_t)
ifdef(`targeted_policy',`
typealias crond_t alias system_crond_t;
',`
type system_crond_t;
')
init_daemon_domain(system_crond_t,anacron_exec_t)
corecmd_shell_entry_type(system_crond_t)
role system_r types system_crond_t;
type system_crond_lock_t;
files_lock_file(system_crond_lock_t)
type system_crond_tmp_t;
files_tmp_file(system_crond_tmp_t)
ifdef(`targeted_policy',`
type sysadm_cron_spool_t;
files_type(sysadm_cron_spool_t)
')
########################################
#
# Cron 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_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 crond_var_run_t:file create_file_perms;
files_pid_filetrans(crond_t,crond_var_run_t)
allow crond_t cron_spool_t:dir rw_dir_perms;
allow crond_t cron_spool_t:file r_file_perms;
allow crond_t system_cron_spool_t:dir r_dir_perms;
allow crond_t system_cron_spool_t:file r_file_perms;
kernel_read_kernel_sysctls(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)
term_dontaudit_use_console(crond_t)
# need auth_chkpwd to check for locked accounts.
auth_domtrans_chk_passwd(crond_t)
corecmd_exec_shell(crond_t)
corecmd_list_sbin(crond_t)
corecmd_read_sbin_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_use_fd(crond_t)
init_use_script_ptys(crond_t)
init_rw_utmp(crond_t)
libs_use_ld_so(crond_t)
libs_use_shared_libs(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_all_users_home_dirs(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',`
rpm_manage_log(crond_t)
')
')
ifdef(`targeted_policy',`
allow crond_t system_crond_tmp_t:dir create_dir_perms;
allow crond_t system_crond_tmp_t:file create_file_perms;
allow crond_t system_crond_tmp_t:lnk_file create_lnk_perms;
allow crond_t system_crond_tmp_t:sock_file create_file_perms;
allow crond_t system_crond_tmp_t:fifo_file create_file_perms;
files_tmp_filetrans(crond_t,system_crond_tmp_t,{ dir file lnk_file sock_file fifo_file })
unconfined_domain(crond_t)
# cjp: fix this to generic_user interfaces
userdom_manage_user_home_content_dirs(user,crond_t)
userdom_manage_generic_user_home_content_files(crond_t)
userdom_manage_generic_user_home_content_symlinks(crond_t)
userdom_manage_generic_user_home_content_sockets(crond_t)
userdom_manage_generic_user_home_content_pipes(crond_t)
userdom_generic_user_home_dir_filetrans_generic_user_home_content(crond_t,{ dir file lnk_file fifo_file sock_file })
allow crond_t unconfined_t:dbus send_msg;
allow crond_t initrc_t:dbus send_msg;
',`
allow crond_t crond_tmp_t:dir create_dir_perms;
allow crond_t crond_tmp_t:file create_file_perms;
files_tmp_filetrans(crond_t, crond_tmp_t, { file dir })
mta_send_mail(crond_t)
')
tunable_policy(`fcron_crond', `
allow crond_t system_cron_spool_t:file create_file_perms;
')
optional_policy(`hal',`
hal_dbus_send(crond_t)
')
optional_policy(`nis',`
nis_use_ypbind(crond_t)
')
optional_policy(`nscd',`
nscd_socket_use(crond_t)
')
optional_policy(`rpm',`
# Commonly used from postinst scripts
rpm_read_pipes(crond_t)
')
optional_policy(`postgresql',`
# allow crond to find /usr/lib/postgresql/bin/do.maintenance
postgresql_search_db(crond_t)
')
optional_policy(`udev',`
udev_read_db(crond_t)
')
########################################
#
# System cron process domain
#
optional_policy(`squid',`
# cjp: why?
squid_domtrans(system_crond_t)
')
ifdef(`targeted_policy',`
# cjp: FIXME
allow crond_t unconfined_t:process transition;
',`
allow system_crond_t self:capability { dac_override dac_read_search chown setgid setuid fowner net_bind_service fsetid };
allow system_crond_t self:process { signal_perms setsched };
allow system_crond_t self:fifo_file rw_file_perms;
allow system_crond_t self:passwd rootok;
# 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_crond_t system_cron_spool_t:file entrypoint;
allow system_crond_t system_cron_spool_t:file r_file_perms;
# 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_crond_t:process transition;
dontaudit crond_t system_crond_t:process { noatsecure siginh rlimitinh };
allow crond_t system_crond_t:fd use;
allow system_crond_t crond_t:fd use;
allow system_crond_t crond_t:fifo_file rw_file_perms;
allow system_crond_t crond_t:process sigchld;
# Write /var/lock/makewhatis.lock.
allow system_crond_t system_crond_lock_t:file create_file_perms;
files_lock_filetrans(system_crond_t,system_crond_lock_t)
# write temporary files
allow system_crond_t system_crond_tmp_t:file create_file_perms;
files_tmp_filetrans(system_crond_t,system_crond_tmp_t)
# write temporary files in crond tmp dir:
allow system_crond_t crond_tmp_t:dir rw_dir_perms;
type_transition system_crond_t crond_tmp_t:file system_crond_tmp_t;
# Read from /var/spool/cron.
allow system_crond_t cron_spool_t:dir r_dir_perms;
allow system_crond_t cron_spool_t:file r_file_perms;
kernel_read_kernel_sysctls(system_crond_t)
kernel_read_system_state(system_crond_t)
kernel_read_software_raid_state(system_crond_t)
# ps does not need to access /boot when run from cron
bootloader_dontaudit_search_boot(system_crond_t)
corenet_tcp_sendrecv_all_if(system_crond_t)
corenet_raw_sendrecv_all_if(system_crond_t)
corenet_udp_sendrecv_all_if(system_crond_t)
corenet_tcp_sendrecv_all_nodes(system_crond_t)
corenet_raw_sendrecv_all_nodes(system_crond_t)
corenet_udp_sendrecv_all_nodes(system_crond_t)
corenet_tcp_sendrecv_all_ports(system_crond_t)
corenet_udp_sendrecv_all_ports(system_crond_t)
corenet_non_ipsec_sendrecv(system_crond_t)
corenet_tcp_bind_all_nodes(system_crond_t)
corenet_udp_bind_all_nodes(system_crond_t)
dev_getattr_all_blk_files(system_crond_t)
dev_getattr_all_chr_files(system_crond_t)
dev_read_urand(system_crond_t)
fs_getattr_all_fs(system_crond_t)
fs_getattr_all_files(system_crond_t)
fs_getattr_all_symlinks(system_crond_t)
fs_getattr_all_pipes(system_crond_t)
fs_getattr_all_sockets(system_crond_t)
corecmd_exec_bin(system_crond_t)
corecmd_exec_sbin(system_crond_t)
domain_exec_all_entry_files(system_crond_t)
# quiet other ps operations
domain_dontaudit_read_all_domains_state(system_crond_t)
files_exec_etc_files(system_crond_t)
files_read_etc_files(system_crond_t)
files_read_etc_runtime_files(system_crond_t)
files_list_all(system_crond_t)
files_getattr_all_dirs(system_crond_t)
files_getattr_all_files(system_crond_t)
files_getattr_all_symlinks(system_crond_t)
files_getattr_all_pipes(system_crond_t)
files_getattr_all_sockets(system_crond_t)
files_read_usr_files(system_crond_t)
files_read_var_files(system_crond_t)
# for nscd:
files_dontaudit_search_pids(system_crond_t)
# Access other spool directories like
# /var/spool/anacron and /var/spool/slrnpull.
files_manage_generic_spool(system_crond_t)
init_use_fd(system_crond_t)
init_use_script_fds(system_crond_t)
init_use_script_ptys(system_crond_t)
init_read_utmp(system_crond_t)
init_dontaudit_rw_utmp(system_crond_t)
# prelink tells init to restart it self, we either need to allow or dontaudit
init_write_initctl(system_crond_t)
libs_use_ld_so(system_crond_t)
libs_use_shared_libs(system_crond_t)
libs_exec_lib_files(system_crond_t)
libs_exec_ld_so(system_crond_t)
logging_read_generic_logs(system_crond_t)
logging_send_syslog_msg(system_crond_t)
miscfiles_read_localization(system_crond_t)
miscfiles_manage_man_pages(system_crond_t)
seutil_read_config(system_crond_t)
mta_send_mail(system_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',`
rpm_manage_log(system_crond_t)
')
')
tunable_policy(`cron_can_relabel',`
seutil_domtrans_setfiles(system_crond_t)
',`
selinux_get_fs_mount(system_crond_t)
selinux_validate_context(system_crond_t)
selinux_compute_access_vector(system_crond_t)
selinux_compute_create_context(system_crond_t)
selinux_compute_relabel_context(system_crond_t)
selinux_compute_user_contexts(system_crond_t)
seutil_read_file_contexts(system_crond_t)
')
optional_policy(`apache',`
# Needed for certwatch
apache_exec_modules(system_crond_t)
apache_read_config(system_crond_t)
apache_read_log(system_crond_t)
apache_read_sys_content(system_crond_t)
')
optional_policy(`cyrus',`
cyrus_manage_data(system_crond_t)
')
optional_policy(`ftp',`
ftp_read_log(system_crond_t)
')
optional_policy(`inn',`
inn_manage_log(system_crond_t)
inn_manage_pid(system_crond_t)
inn_read_config(system_crond_t)
')
optional_policy(`mrtg',`
mrtg_append_create_logs(system_crond_t)
')
optional_policy(`mysql',`
mysql_read_config(system_crond_t)
')
optional_policy(`nis',`
nis_use_ypbind(system_crond_t)
')
optional_policy(`nscd',`
nscd_socket_use(system_crond_t)
')
optional_policy(`postfix',`
postfix_read_config(system_crond_t)
')
optional_policy(`prelink',`
prelink_read_cache(system_crond_t)
prelink_manage_log(system_crond_t)
prelink_delete_cache(system_crond_t)
')
optional_policy(`samba',`
samba_read_config(system_crond_t)
samba_read_log(system_crond_t)
#samba_read_secrets(system_crond_t)
')
optional_policy(`slocate',`
slocate_create_append_log(system_crond_t)
')
optional_policy(`sysstat',`
sysstat_manage_log(system_crond_t)
')
ifdef(`TODO',`
dontaudit userdomain system_crond_t:fd use;
allow system_crond_t { sysfs_t rpc_pipefs_t }:dir getattr;
# for if /var/mail is a symlink
allow system_crond_t mail_spool_t:lnk_file read;
ifdef(`mta.te', `
mta_send_mail_transition(system_crond_t)
allow mta_user_agent system_crond_t:fd use;
r_dir_file(system_mail_t, crond_tmp_t)
')
# for daemon re-start
allow system_crond_t syslogd_t:lnk_file read;
') dnl end TODO
')