path: root/policy/modules/admin/usermanage.te

policy_module(usermanage, 1.17.0)

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

attribute_role chfn_roles;
role chfn_roles types chfn_t;
role system_r types chfn_t;

attribute_role groupadd_roles;
role groupadd_roles types groupadd_t;

attribute_role passwd_roles;
roleattribute system_r passwd_roles;

attribute_role sysadm_passwd_roles;
roleattribute system_r sysadm_passwd_roles;

attribute_role useradd_roles;
role useradd_roles types useradd_t;

type admin_passwd_exec_t;
files_type(admin_passwd_exec_t)

type chfn_t;
type chfn_exec_t;
domain_obj_id_change_exemption(chfn_t)
application_domain(chfn_t, chfn_exec_t)

type crack_t;
type crack_exec_t;
application_domain(crack_t, crack_exec_t)
role system_r types crack_t;

type crack_db_t;
files_type(crack_db_t)

type crack_tmp_t;
files_tmp_file(crack_tmp_t)

type groupadd_t;
type groupadd_exec_t;
domain_obj_id_change_exemption(groupadd_t)
init_system_domain(groupadd_t, groupadd_exec_t)

type passwd_t;
type passwd_exec_t;
domain_obj_id_change_exemption(passwd_t)
application_domain(passwd_t, passwd_exec_t)
role passwd_roles types passwd_t;

type sysadm_passwd_t;
domain_obj_id_change_exemption(sysadm_passwd_t)
application_domain(sysadm_passwd_t, admin_passwd_exec_t)
role sysadm_passwd_roles types sysadm_passwd_t;

type sysadm_passwd_tmp_t;
files_tmp_file(sysadm_passwd_tmp_t)

type useradd_t;
type useradd_exec_t;
domain_obj_id_change_exemption(useradd_t)
init_system_domain(useradd_t, useradd_exec_t)

########################################
#
# Chfn local policy
#

allow chfn_t self:capability { chown dac_override fsetid setuid setgid sys_resource };
allow chfn_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execheap execstack };
allow chfn_t self:process { setrlimit setfscreate };
allow chfn_t self:fd use;
allow chfn_t self:fifo_file rw_fifo_file_perms;
allow chfn_t self:sock_file read_sock_file_perms;
allow chfn_t self:shm create_shm_perms;
allow chfn_t self:sem create_sem_perms;
allow chfn_t self:msgq create_msgq_perms;
allow chfn_t self:msg { send receive };
allow chfn_t self:unix_dgram_socket create_socket_perms;
allow chfn_t self:unix_stream_socket create_stream_socket_perms;
allow chfn_t self:unix_dgram_socket sendto;
allow chfn_t self:unix_stream_socket connectto;

kernel_read_system_state(chfn_t)
kernel_read_kernel_sysctls(chfn_t)

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

term_use_all_ttys(chfn_t)
term_use_all_ptys(chfn_t)

fs_getattr_xattr_fs(chfn_t)
fs_search_auto_mountpoints(chfn_t)

# for SSP
dev_read_urand(chfn_t)

auth_run_chk_passwd(chfn_t, chfn_roles)
auth_dontaudit_read_shadow(chfn_t)
auth_use_nsswitch(chfn_t)

# allow checking if a shell is executable
corecmd_check_exec_shell(chfn_t)

domain_use_interactive_fds(chfn_t)

files_manage_etc_files(chfn_t)
files_read_etc_runtime_files(chfn_t)
files_dontaudit_search_var(chfn_t)
files_dontaudit_search_home(chfn_t)

# /usr/bin/passwd asks for w access to utmp, but it will operate
# correctly without it.  Do not audit write denials to utmp.
init_dontaudit_rw_utmp(chfn_t)

miscfiles_read_localization(chfn_t)

logging_send_syslog_msg(chfn_t)

# uses unix_chkpwd for checking passwords
seutil_dontaudit_search_config(chfn_t)

userdom_use_unpriv_users_fds(chfn_t)
# user generally runs this from their home directory, so do not audit a search
# on user home dir
userdom_dontaudit_search_user_home_content(chfn_t)

########################################
#
# Crack local policy
#

allow crack_t self:process signal_perms;
allow crack_t self:fifo_file rw_fifo_file_perms;

manage_files_pattern(crack_t, crack_db_t, crack_db_t)
manage_lnk_files_pattern(crack_t, crack_db_t, crack_db_t)
files_search_var(crack_t)

manage_dirs_pattern(crack_t, crack_tmp_t, crack_tmp_t)
manage_files_pattern(crack_t, crack_tmp_t, crack_tmp_t)
files_tmp_filetrans(crack_t, crack_tmp_t, { file dir })

kernel_read_system_state(crack_t)

# for SSP
dev_read_urand(crack_t)

fs_getattr_xattr_fs(crack_t)

files_read_etc_files(crack_t)
files_read_etc_runtime_files(crack_t)
# for dictionaries
files_read_usr_files(crack_t)

corecmd_exec_bin(crack_t)

logging_send_syslog_msg(crack_t)

userdom_dontaudit_search_user_home_dirs(crack_t)

ifdef(`distro_debian',`
	# the package cracklib-runtime on Debian contains a daily maintenance
	# script /etc/cron.daily/cracklib-runtime, that calls
	# update-cracklib and that calls crack_mkdict, which is a shell script.
	corecmd_exec_shell(crack_t)
')

optional_policy(`
	cron_system_entry(crack_t, crack_exec_t)
')

########################################
#
# Groupadd local policy
#

allow groupadd_t self:capability { dac_override chown kill setuid sys_resource audit_write };
dontaudit groupadd_t self:capability { fsetid sys_tty_config };
allow groupadd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execheap execstack };
allow groupadd_t self:process { setrlimit setfscreate };
allow groupadd_t self:fd use;
allow groupadd_t self:fifo_file rw_fifo_file_perms;
allow groupadd_t self:shm create_shm_perms;
allow groupadd_t self:sem create_sem_perms;
allow groupadd_t self:msgq create_msgq_perms;
allow groupadd_t self:msg { send receive };
allow groupadd_t self:unix_dgram_socket create_socket_perms;
allow groupadd_t self:unix_stream_socket create_stream_socket_perms;
allow groupadd_t self:unix_dgram_socket sendto;
allow groupadd_t self:unix_stream_socket connectto;

fs_getattr_xattr_fs(groupadd_t)
fs_search_auto_mountpoints(groupadd_t)

# Allow access to context for shadow file
selinux_get_fs_mount(groupadd_t)
selinux_validate_context(groupadd_t)
selinux_compute_access_vector(groupadd_t)
selinux_compute_create_context(groupadd_t)
selinux_compute_relabel_context(groupadd_t)
selinux_compute_user_contexts(groupadd_t)

term_use_all_ttys(groupadd_t)
term_use_all_ptys(groupadd_t)

init_use_fds(groupadd_t)
init_read_utmp(groupadd_t)
init_dontaudit_write_utmp(groupadd_t)

domain_use_interactive_fds(groupadd_t)

files_manage_etc_files(groupadd_t)
files_relabel_etc_files(groupadd_t)
files_read_etc_runtime_files(groupadd_t)
files_read_usr_symlinks(groupadd_t)

# Execute /usr/bin/{passwd, chfn, chsh} and /usr/sbin/{useradd, vipw}.
corecmd_exec_bin(groupadd_t)

logging_send_audit_msgs(groupadd_t)
logging_send_syslog_msg(groupadd_t)

miscfiles_read_localization(groupadd_t)

auth_run_chk_passwd(groupadd_t, groupadd_roles)
auth_rw_lastlog(groupadd_t)
auth_use_nsswitch(groupadd_t)
# these may be unnecessary due to the above
# domtrans_chk_passwd() call.
auth_manage_shadow(groupadd_t)
auth_relabel_shadow(groupadd_t)
auth_etc_filetrans_shadow(groupadd_t)

seutil_read_config(groupadd_t)

userdom_use_unpriv_users_fds(groupadd_t)
# for when /root is the cwd
userdom_dontaudit_search_user_home_dirs(groupadd_t)

optional_policy(`
	dpkg_use_fds(groupadd_t)
	dpkg_rw_pipes(groupadd_t)
')

optional_policy(`
	nscd_run(groupadd_t, groupadd_roles)
')

optional_policy(`
	puppet_rw_tmp(groupadd_t)
')

optional_policy(`
	rpm_use_fds(groupadd_t)
	rpm_rw_pipes(groupadd_t)
')

########################################
#
# Passwd local policy
#

allow passwd_t self:capability { chown dac_override fsetid setuid setgid sys_nice sys_resource };
dontaudit passwd_t self:capability sys_tty_config;
allow passwd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
allow passwd_t self:process { setrlimit setfscreate };
allow passwd_t self:fd use;
allow passwd_t self:fifo_file rw_fifo_file_perms;
allow passwd_t self:sock_file read_sock_file_perms;
allow passwd_t self:unix_dgram_socket create_socket_perms;
allow passwd_t self:unix_stream_socket create_stream_socket_perms;
allow passwd_t self:unix_dgram_socket sendto;
allow passwd_t self:unix_stream_socket connectto;
allow passwd_t self:shm create_shm_perms;
allow passwd_t self:sem create_sem_perms;
allow passwd_t self:msgq create_msgq_perms;
allow passwd_t self:msg { send receive };

allow passwd_t crack_db_t:dir list_dir_perms;
read_files_pattern(passwd_t, crack_db_t, crack_db_t)

kernel_read_kernel_sysctls(passwd_t)

# for SSP
dev_read_urand(passwd_t)

fs_getattr_xattr_fs(passwd_t)
fs_search_auto_mountpoints(passwd_t)

mls_file_write_all_levels(passwd_t)
mls_file_downgrade(passwd_t)

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

term_use_all_ttys(passwd_t)
term_use_all_ptys(passwd_t)

auth_run_chk_passwd(passwd_t, passwd_roles)
auth_manage_shadow(passwd_t)
auth_relabel_shadow(passwd_t)
auth_etc_filetrans_shadow(passwd_t)
auth_use_nsswitch(passwd_t)

# allow checking if a shell is executable
corecmd_check_exec_shell(passwd_t)

domain_use_interactive_fds(passwd_t)

files_read_etc_runtime_files(passwd_t)
files_manage_etc_files(passwd_t)
files_search_var(passwd_t)
files_dontaudit_search_pids(passwd_t)
files_relabel_etc_files(passwd_t)

# /usr/bin/passwd asks for w access to utmp, but it will operate
# correctly without it.  Do not audit write denials to utmp.
init_dontaudit_rw_utmp(passwd_t)
init_use_fds(passwd_t)

logging_send_audit_msgs(passwd_t)
logging_send_syslog_msg(passwd_t)

miscfiles_read_localization(passwd_t)

seutil_dontaudit_search_config(passwd_t)

userdom_use_user_terminals(passwd_t)
userdom_use_unpriv_users_fds(passwd_t)
# make sure that getcon succeeds
userdom_getattr_all_users(passwd_t)
userdom_read_all_users_state(passwd_t)
userdom_read_user_tmp_files(passwd_t)
# user generally runs this from their home directory, so do not audit a search
# on user home dir
userdom_dontaudit_search_user_home_content(passwd_t)

optional_policy(`
	nscd_run(passwd_t, passwd_roles)
')

########################################
#
# Password admin local policy
#

allow sysadm_passwd_t self:capability { chown dac_override fsetid setuid setgid sys_resource };
allow sysadm_passwd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
allow sysadm_passwd_t self:process { setrlimit setfscreate };
allow sysadm_passwd_t self:fd use;
allow sysadm_passwd_t self:fifo_file rw_fifo_file_perms;
allow sysadm_passwd_t self:sock_file read_sock_file_perms;
allow sysadm_passwd_t self:unix_dgram_socket create_socket_perms;
allow sysadm_passwd_t self:unix_stream_socket create_stream_socket_perms;
allow sysadm_passwd_t self:unix_dgram_socket sendto;
allow sysadm_passwd_t self:unix_stream_socket connectto;
allow sysadm_passwd_t self:shm create_shm_perms;
allow sysadm_passwd_t self:sem create_sem_perms;
allow sysadm_passwd_t self:msgq create_msgq_perms;
allow sysadm_passwd_t self:msg { send receive };

# allow vipw to create temporary files under /var/tmp/vi.recover
manage_dirs_pattern(sysadm_passwd_t, sysadm_passwd_tmp_t, sysadm_passwd_tmp_t)
manage_files_pattern(sysadm_passwd_t, sysadm_passwd_tmp_t, sysadm_passwd_tmp_t)
files_tmp_filetrans(sysadm_passwd_t, sysadm_passwd_tmp_t, { file dir })
files_search_var(sysadm_passwd_t)
files_dontaudit_search_home(sysadm_passwd_t)

kernel_read_kernel_sysctls(sysadm_passwd_t)
# for /proc/meminfo
kernel_read_system_state(sysadm_passwd_t)

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

# for SSP
dev_read_urand(sysadm_passwd_t)

fs_getattr_xattr_fs(sysadm_passwd_t)
fs_search_auto_mountpoints(sysadm_passwd_t)

term_use_all_ttys(sysadm_passwd_t)
term_use_all_ptys(sysadm_passwd_t)

auth_manage_shadow(sysadm_passwd_t)
auth_relabel_shadow(sysadm_passwd_t)
auth_etc_filetrans_shadow(sysadm_passwd_t)
auth_use_nsswitch(sysadm_passwd_t)

# allow vipw to exec the editor
corecmd_exec_bin(sysadm_passwd_t)
corecmd_exec_shell(sysadm_passwd_t)
files_read_usr_files(sysadm_passwd_t)

domain_use_interactive_fds(sysadm_passwd_t)

files_manage_etc_files(sysadm_passwd_t)
files_relabel_etc_files(sysadm_passwd_t)
files_read_etc_runtime_files(sysadm_passwd_t)
# for nscd lookups
files_dontaudit_search_pids(sysadm_passwd_t)

# /usr/bin/passwd asks for w access to utmp, but it will operate
# correctly without it.  Do not audit write denials to utmp.
init_dontaudit_rw_utmp(sysadm_passwd_t)

miscfiles_read_localization(sysadm_passwd_t)

logging_send_syslog_msg(sysadm_passwd_t)

seutil_dontaudit_search_config(sysadm_passwd_t)

userdom_use_unpriv_users_fds(sysadm_passwd_t)
# user generally runs this from their home directory, so do not audit a search
# on user home dir
userdom_dontaudit_search_user_home_content(sysadm_passwd_t)

optional_policy(`
	nscd_run(sysadm_passwd_t, sysadm_passwd_roles)
')

########################################
#
# Useradd local policy
#

allow useradd_t self:capability { dac_override chown kill fowner fsetid setuid sys_resource };
dontaudit useradd_t self:capability sys_tty_config;
allow useradd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
allow useradd_t self:process setfscreate;
allow useradd_t self:fd use;
allow useradd_t self:fifo_file rw_fifo_file_perms;
allow useradd_t self:shm create_shm_perms;
allow useradd_t self:sem create_sem_perms;
allow useradd_t self:msgq create_msgq_perms;
allow useradd_t self:msg { send receive };
allow useradd_t self:unix_dgram_socket create_socket_perms;
allow useradd_t self:unix_stream_socket create_stream_socket_perms;
allow useradd_t self:unix_dgram_socket sendto;
allow useradd_t self:unix_stream_socket connectto;

# for getting the number of groups
kernel_read_kernel_sysctls(useradd_t)

corecmd_exec_shell(useradd_t)
# Execute /usr/bin/{passwd,chfn,chsh} and /usr/sbin/{useradd,vipw}.
corecmd_exec_bin(useradd_t)

domain_use_interactive_fds(useradd_t)
domain_read_all_domains_state(useradd_t)

files_manage_etc_files(useradd_t)
files_search_var_lib(useradd_t)
files_relabel_etc_files(useradd_t)
files_read_etc_runtime_files(useradd_t)

fs_search_auto_mountpoints(useradd_t)
fs_getattr_xattr_fs(useradd_t)

mls_file_upgrade(useradd_t)

# Allow access to context for shadow file
selinux_get_fs_mount(useradd_t)
selinux_validate_context(useradd_t)
selinux_compute_access_vector(useradd_t)
selinux_compute_create_context(useradd_t)
selinux_compute_relabel_context(useradd_t)
selinux_compute_user_contexts(useradd_t)

term_use_all_ttys(useradd_t)
term_use_all_ptys(useradd_t)

auth_run_chk_passwd(useradd_t, useradd_roles)
auth_rw_lastlog(useradd_t)
auth_rw_faillog(useradd_t)
auth_use_nsswitch(useradd_t)
# these may be unnecessary due to the above
# domtrans_chk_passwd() call.
auth_manage_shadow(useradd_t)
auth_relabel_shadow(useradd_t)
auth_etc_filetrans_shadow(useradd_t)

init_use_fds(useradd_t)
init_rw_utmp(useradd_t)

logging_send_audit_msgs(useradd_t)
logging_send_syslog_msg(useradd_t)

miscfiles_read_localization(useradd_t)

seutil_read_config(useradd_t)
seutil_read_file_contexts(useradd_t)
seutil_read_default_contexts(useradd_t)
seutil_run_semanage(useradd_t, useradd_roles)
seutil_run_setfiles(useradd_t, useradd_roles)

userdom_use_unpriv_users_fds(useradd_t)
# Add/remove user home directories
userdom_manage_user_home_dirs(useradd_t)
userdom_home_filetrans_user_home_dir(useradd_t)
userdom_manage_user_home_content_dirs(useradd_t)
userdom_manage_user_home_content_files(useradd_t)
userdom_home_filetrans_user_home_dir(useradd_t)
userdom_user_home_dir_filetrans_user_home_content(useradd_t, notdevfile_class_set)

optional_policy(`
	mta_manage_spool(useradd_t)
')

ifdef(`distro_redhat',`
	optional_policy(`
		unconfined_domain(useradd_t)
	')
')

optional_policy(`
	apache_manage_all_user_content(useradd_t)
')

optional_policy(`
	dpkg_use_fds(useradd_t)
	dpkg_rw_pipes(useradd_t)
')

optional_policy(`
	nscd_run(useradd_t, useradd_roles)
')

optional_policy(`
	puppet_rw_tmp(useradd_t)
')

optional_policy(`
	tunable_policy(`samba_domain_controller',`
		samba_append_log(useradd_t)
	')
')

optional_policy(`
	rpm_use_fds(useradd_t)
	rpm_rw_pipes(useradd_t)
')