547 lines
20 KiB
Plaintext
547 lines
20 KiB
Plaintext
# Copyright (C) 2005 Tresys Technology, LLC
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policy_module(usermanage,1.0)
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########################################
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#
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# Declarations
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#
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type admin_passwd_exec_t;
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files_make_file(admin_passwd_exec_t)
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type chfn_t;
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kernel_make_object_identity_change_constraint_exception(chfn_t)
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domain_make_domain(chfn_t)
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role system_r types chfn_t;
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type chfn_exec_t;
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domain_make_entrypoint_file(chfn_t,chfn_exec_t)
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type crack_t;
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role system_r types crack_t;
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type crack_exec_t;
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domain_make_entrypoint_file(crack_t,crack_exec_t)
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type crack_db_t; #, usercanread;
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files_make_file(crack_db_t)
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type crack_tmp_t;
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files_make_temporary_file(crack_tmp_t)
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type groupadd_t; #, nscd_client_domain;
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type groupadd_exec_t;
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kernel_make_object_identity_change_constraint_exception(groupadd_t)
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init_make_system_domain(groupadd_t,groupadd_exec_t)
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role system_r types groupadd_t;
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type passwd_t;
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kernel_make_object_identity_change_constraint_exception(passwd_t)
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domain_make_domain(passwd_t)
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role system_r types passwd_t;
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type passwd_exec_t;
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domain_make_entrypoint_file(passwd_t,passwd_exec_t)
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type sysadm_passwd_t;
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kernel_make_object_identity_change_constraint_exception(sysadm_passwd_t)
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domain_make_domain(sysadm_passwd_t)
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domain_make_entrypoint_file(sysadm_passwd_t,admin_passwd_exec_t)
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type sysadm_passwd_tmp_t;
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files_make_file(sysadm_passwd_tmp_t)
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type useradd_t; # nscd_client_domain;
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type useradd_exec_t;
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kernel_make_object_identity_change_constraint_exception(useradd_t)
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init_make_system_domain(useradd_t,useradd_exec_t)
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role system_r types useradd_t;
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########################################
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#
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# Chfn local policy
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#
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allow chfn_t self:capability { chown dac_override fsetid setuid setgid sys_resource };
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allow chfn_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem dyntransition };
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allow chfn_t self:process { setrlimit setfscreate };
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allow chfn_t self:fd use;
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allow chfn_t self:fifo_file { read getattr lock ioctl write append };
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allow chfn_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown };
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allow chfn_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };
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allow chfn_t self:unix_dgram_socket sendto;
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allow chfn_t self:unix_stream_socket connectto;
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allow chfn_t self:shm { associate getattr setattr create destroy read write lock unix_read unix_write };
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allow chfn_t self:sem { associate getattr setattr create destroy read write unix_read unix_write };
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allow chfn_t self:msgq { associate getattr setattr create destroy read write enqueue unix_read unix_write };
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allow chfn_t self:msg { send receive };
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kernel_read_system_state(chfn_t)
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kernel_get_selinuxfs_mount_point(chfn_t)
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kernel_validate_selinux_context(chfn_t)
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kernel_compute_selinux_access_vector(chfn_t)
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kernel_compute_selinux_create_context(chfn_t)
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kernel_compute_selinux_relabel_context(chfn_t)
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kernel_compute_selinux_reachable_user_contexts(chfn_t)
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terminal_use_all_private_physical_terminals(chfn_t)
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terminal_use_all_private_pseudoterminals(chfn_t)
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filesystem_get_persistent_filesystem_attributes(chfn_t)
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# for SSP
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devices_get_pseudorandom_data(chfn_t)
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# /usr/bin/passwd asks for w access to utmp, but it will operate
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# correctly without it. Do not audit write denials to utmp.
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init_script_ignore_modify_runtime_data(chfn_t)
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domain_use_widely_inheritable_file_descriptors(chfn_t)
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files_manage_general_system_config(chfn_t)
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files_read_runtime_system_config(chfn_t)
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libraries_use_dynamic_loader(chfn_t)
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libraries_use_shared_libraries(chfn_t)
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miscfiles_read_localization(chfn_t)
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logging_send_system_log_message(chfn_t)
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authlogin_check_password_transition(chfn_t)
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authlogin_ignore_read_shadow_passwords(chfn_t)
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ifdef(`TODO',`
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role sysadm_r types chfn_t;
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in_user_role(chfn_t)
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domain_auto_trans({ userdomain ifdef(`firstboot.te', `firstboot_t') }, chfn_exec_t, chfn_t)
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dontaudit chfn_t var_t:dir search;
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allow chfn_t unpriv_userdomain:fd use;
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can_ypbind(chfn_t)
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ifdef(`automount.te', `
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allow chfn_t autofs_t:dir { search getattr };
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')
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ifdef(`gnome-pty-helper.te', `allow chfn_t gphdomain:fd use;')
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# allow checking if a shell is executable
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allow chfn_t shell_exec_t:file execute;
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# user generally runs this from their home directory, so do not audit a search
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# on user home dir
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dontaudit chfn_t { user_home_dir_type user_home_type }:dir search;
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# can exec /sbin/unix_chkpwd
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allow chfn_t { bin_t sbin_t }:dir search;
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# uses unix_chkpwd for checking passwords
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dontaudit chfn_t selinux_config_t:dir search;
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') dnl endif TODO
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########################################
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#
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# Crack local policy
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#
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allow crack_t self:process { sigkill sigstop signull signal };
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allow crack_t self:fifo_file { read write getattr };
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allow crack_t crack_db_t:dir { read getattr lock search ioctl add_name remove_name write };
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allow crack_t crack_db_t:file { create ioctl read getattr lock write setattr append link unlink rename };
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allow crack_t crack_db_t:lnk_file { create read getattr setattr link unlink rename };
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files_search_system_state_data_directory(crack_t)
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allow crack_t crack_tmp_t:dir { create read getattr lock setattr ioctl link unlink rename search add_name remove_name reparent write rmdir };
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allow crack_t crack_tmp_t:file { create ioctl read getattr lock write setattr append link unlink rename };
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files_create_private_tmp_data(crack_t, crack_tmp_t, { file dir })
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kernel_read_system_state(crack_t)
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# for SSP
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devices_get_pseudorandom_data(crack_t)
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filesystem_get_persistent_filesystem_attributes(crack_t)
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files_read_general_system_config(crack_t)
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files_read_runtime_system_config(crack_t)
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# for dictionaries
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files_read_general_application_resources(crack_t)
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corecommands_execute_general_programs(crack_t)
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libraries_use_dynamic_loader(crack_t)
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libraries_use_shared_libraries(crack_t)
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logging_send_system_log_message(crack_t)
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ifdef(`TODO',`
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ifdef(`crond.te', `
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domain_auto_trans(system_crond_t, crack_exec_t, crack_t)
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allow crack_t crond_t:fifo_file { getattr read write ioctl };
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# a rule for privfd may make this obsolete
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allow crack_t crond_t:fd use;
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allow crack_t crond_t:process sigchld;
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')
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dontaudit crack_t sysadm_home_dir_t:dir { getattr search };
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') dnl endif TODO
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########################################
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#
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# Groupadd local policy
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#
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allow groupadd_t self:capability { dac_override chown kill setuid sys_resource };
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dontaudit groupadd_t self:capability fsetid;
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allow groupadd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem dyntransition };
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allow groupadd_t self:process { setrlimit setfscreate };
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allow groupadd_t self:fd use;
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allow groupadd_t self:fifo_file { read getattr lock ioctl write append };
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allow groupadd_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown };
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allow groupadd_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };
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allow groupadd_t self:unix_dgram_socket sendto;
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allow groupadd_t self:unix_stream_socket connectto;
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allow groupadd_t self:shm { associate getattr setattr create destroy read write lock unix_read unix_write };
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allow groupadd_t self:sem { associate getattr setattr create destroy read write unix_read unix_write };
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allow groupadd_t self:msgq { associate getattr setattr create destroy read write enqueue unix_read unix_write };
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allow groupadd_t self:msg { send receive };
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# Allow access to context for shadow file
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kernel_get_selinuxfs_mount_point(groupadd_t)
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kernel_validate_selinux_context(groupadd_t)
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kernel_compute_selinux_access_vector(groupadd_t)
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kernel_compute_selinux_create_context(groupadd_t)
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kernel_compute_selinux_relabel_context(groupadd_t)
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kernel_compute_selinux_reachable_user_contexts(groupadd_t)
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filesystem_get_persistent_filesystem_attributes(groupadd_t)
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terminal_use_all_private_physical_terminals(groupadd_t)
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terminal_use_all_private_pseudoterminals(groupadd_t)
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init_use_file_descriptors(groupadd_t)
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init_script_read_runtime_data(groupadd_t)
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domain_use_widely_inheritable_file_descriptors(groupadd_t)
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files_manage_general_system_config(groupadd_t)
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libraries_use_dynamic_loader(groupadd_t)
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libraries_use_shared_libraries(groupadd_t)
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# Execute /usr/bin/{passwd,chfn,chsh} and /usr/sbin/{useradd,vipw}.
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corecommands_execute_general_programs(groupadd_t)
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corecommands_execute_system_programs(groupadd_t)
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logging_send_system_log_message(groupadd_t)
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miscfiles_read_localization(groupadd_t)
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authlogin_manage_shadow_passwords(groupadd_t)
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authlogin_modify_last_login_log(groupadd_t)
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selinux_read_config(groupadd_t)
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ifdef(`TODO',`
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role sysadm_r types groupadd_t;
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domain_auto_trans(sysadm_t, groupadd_exec_t, groupadd_t)
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allow groupadd_t unpriv_userdomain:fd use;
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can_ypbind(groupadd_t)
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ifdef(`automount.te', `
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allow groupadd_t autofs_t:dir { search getattr };
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')
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# Update /etc/shadow and /etc/passwd
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allow groupadd_t { etc_t shadow_t }:file { relabelfrom relabelto };
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# Access terminals.
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ifdef(`gnome-pty-helper.te', `allow groupadd_t gphdomain:fd use;')
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# for when /root is the cwd
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dontaudit groupadd_t sysadm_home_dir_t:dir search;
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dontaudit groupadd_t initrc_var_run_t:file write;
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') dnl end TODO
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########################################
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#
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# Passwd local policy
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#
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allow passwd_t self:capability { chown dac_override fsetid setuid setgid sys_resource };
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allow passwd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem dyntransition };
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allow passwd_t self:process { setrlimit setfscreate };
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allow passwd_t self:fd use;
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allow passwd_t self:fifo_file { read getattr lock ioctl write append };
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allow passwd_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown };
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allow passwd_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };
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allow passwd_t self:unix_dgram_socket sendto;
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allow passwd_t self:unix_stream_socket connectto;
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allow passwd_t self:shm { associate getattr setattr create destroy read write lock unix_read unix_write };
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allow passwd_t self:sem { associate getattr setattr create destroy read write unix_read unix_write };
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allow passwd_t self:msgq { associate getattr setattr create destroy read write enqueue unix_read unix_write };
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allow passwd_t self:msg { send receive };
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kernel_get_selinuxfs_mount_point(passwd_t)
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kernel_validate_selinux_context(passwd_t)
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kernel_compute_selinux_access_vector(passwd_t)
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kernel_compute_selinux_create_context(passwd_t)
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kernel_compute_selinux_relabel_context(passwd_t)
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kernel_compute_selinux_reachable_user_contexts(passwd_t)
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# for SSP
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devices_get_pseudorandom_data(passwd_t)
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filesystem_get_persistent_filesystem_attributes(passwd_t)
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# /usr/bin/passwd asks for w access to utmp, but it will operate
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# correctly without it. Do not audit write denials to utmp.
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init_script_ignore_modify_runtime_data(passwd_t)
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domain_use_widely_inheritable_file_descriptors(passwd_t)
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files_read_runtime_system_config(passwd_t)
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files_manage_general_system_config(passwd_t)
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libraries_use_dynamic_loader(passwd_t)
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libraries_use_shared_libraries(passwd_t)
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logging_send_system_log_message(passwd_t)
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miscfiles_read_localization(passwd_t)
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authlogin_manage_shadow_passwords(passwd_t)
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ifdef(`TODO',`
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ifdef(`firstboot.te',`
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domain_auto_trans(firstboot_t, passwd_exec_t, passwd_t)
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')
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# Update /etc/shadow and /etc/passwd
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allow passwd_t { etc_t shadow_t }:file { relabelfrom relabelto };
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allow passwd_t unpriv_userdomain:fd use;
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can_ypbind(passwd_t)
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ifdef(`automount.te', `
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allow passwd_t autofs_t:dir { search getattr };
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')
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# Inherit and use descriptors from login.
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ifdef(`gnome-pty-helper.te', `allow passwd_t gphdomain:fd use;')
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# allow checking if a shell is executable
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allow passwd_t shell_exec_t:file execute;
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# user generally runs this from their home directory, so do not audit a search
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# on user home dir
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dontaudit passwd_t { user_home_dir_type user_home_type }:dir search;
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# make sure that getcon succeeds
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allow passwd_t userdomain:dir search;
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allow passwd_t userdomain:file read;
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allow passwd_t userdomain:process getattr;
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dontaudit passwd_t selinux_config_t:dir search;
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ifdef(`crack.te', `
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allow passwd_t var_t:dir search;
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dontaudit passwd_t var_run_t:dir search;
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allow passwd_t crack_db_t:dir r_dir_perms;
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allow passwd_t crack_db_t:file r_file_perms;
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', `
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dontaudit passwd_t var_t:dir search;
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')
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') dnl endif TODO
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########################################
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#
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# Password admin local policy
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#
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allow sysadm_passwd_t self:capability { chown dac_override fsetid setuid setgid sys_resource };
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allow sysadm_passwd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem dyntransition };
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allow sysadm_passwd_t self:process { setrlimit setfscreate };
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allow sysadm_passwd_t self:fd use;
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allow sysadm_passwd_t self:fifo_file { read getattr lock ioctl write append };
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allow sysadm_passwd_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown };
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allow sysadm_passwd_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };
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allow sysadm_passwd_t self:unix_dgram_socket sendto;
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allow sysadm_passwd_t self:unix_stream_socket connectto;
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allow sysadm_passwd_t self:shm { associate getattr setattr create destroy read write lock unix_read unix_write };
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allow sysadm_passwd_t self:sem { associate getattr setattr create destroy read write unix_read unix_write };
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allow sysadm_passwd_t self:msgq { associate getattr setattr create destroy read write enqueue unix_read unix_write };
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allow sysadm_passwd_t self:msg { send receive };
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# allow vipw to create temporary files under /var/tmp/vi.recover
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allow sysadm_passwd_t sysadm_passwd_tmp_t:dir { create read getattr lock setattr ioctl link unlink rename search add_name remove_name reparent write rmdir };
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allow sysadm_passwd_t sysadm_passwd_tmp_t:file { create ioctl read getattr lock write setattr append link unlink rename };
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files_create_private_tmp_data(sysadm_passwd_t, sysadm_passwd_tmp_t, { file dir })
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files_search_system_state_data_directory(sysadm_passwd_t)
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kernel_get_selinuxfs_mount_point(sysadm_passwd_t)
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kernel_validate_selinux_context(sysadm_passwd_t)
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kernel_compute_selinux_access_vector(sysadm_passwd_t)
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kernel_compute_selinux_create_context(sysadm_passwd_t)
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kernel_compute_selinux_relabel_context(sysadm_passwd_t)
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kernel_compute_selinux_reachable_user_contexts(sysadm_passwd_t)
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# for /proc/meminfo
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kernel_read_system_state(sysadm_passwd_t)
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# for SSP
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devices_get_pseudorandom_data(sysadm_passwd_t)
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filesystem_get_persistent_filesystem_attributes(sysadm_passwd_t)
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terminal_use_all_private_physical_terminals(sysadm_passwd_t)
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terminal_use_all_private_pseudoterminals(sysadm_passwd_t)
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# /usr/bin/passwd asks for w access to utmp, but it will operate
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# correctly without it. Do not audit write denials to utmp.
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init_script_ignore_modify_runtime_data(sysadm_passwd_t)
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domain_use_widely_inheritable_file_descriptors(sysadm_passwd_t)
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files_manage_general_system_config(sysadm_passwd_t)
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files_read_runtime_system_config(sysadm_passwd_t)
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# allow vipw to exec the editor
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corecommands_execute_general_programs(sysadm_passwd_t)
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corecommands_execute_shell(sysadm_passwd_t)
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files_read_general_application_resources(sysadm_passwd_t)
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libraries_use_dynamic_loader(sysadm_passwd_t)
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libraries_use_shared_libraries(sysadm_passwd_t)
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miscfiles_read_localization(sysadm_passwd_t)
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logging_send_system_log_message(sysadm_passwd_t)
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authlogin_manage_shadow_passwords(sysadm_passwd_t)
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ifdef(`TODO',`
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role sysadm_r types sysadm_passwd_t;
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domain_auto_trans(sysadm_t, admin_passwd_exec_t, sysadm_passwd_t)
|
|
|
|
allow sysadm_passwd_t unpriv_userdomain:fd use;
|
|
can_ypbind(sysadm_passwd_t)
|
|
ifdef(`automount.te', `
|
|
allow sysadm_passwd_t autofs_t:dir { search getattr };
|
|
')
|
|
|
|
# Inherit and use descriptors from login.
|
|
ifdef(`gnome-pty-helper.te', `allow sysadm_passwd_t gphdomain:fd use;')
|
|
|
|
# allow checking if a shell is executable
|
|
allow sysadm_passwd_t shell_exec_t:file execute;
|
|
|
|
# user generally runs this from their home directory, so do not audit a search
|
|
# on user home dir
|
|
dontaudit sysadm_passwd_t { user_home_dir_type user_home_type }:dir search;
|
|
|
|
# Update /etc/shadow and /etc/passwd
|
|
allow sysadm_passwd_t { etc_t shadow_t }:file { relabelfrom relabelto };
|
|
|
|
# for vipw - vi looks in the root home directory for config
|
|
dontaudit sysadm_passwd_t sysadm_home_dir_t:dir { getattr search };
|
|
|
|
# for nscd lookups
|
|
dontaudit sysadm_passwd_t var_run_t:dir search;
|
|
|
|
dontaudit sysadm_passwd_t selinux_config_t:dir search;
|
|
') dnl endif TODO
|
|
|
|
########################################
|
|
#
|
|
# Useradd local policy
|
|
#
|
|
|
|
allow useradd_t self:capability { dac_override chown kill fowner fsetid setuid sys_resource };
|
|
allow useradd_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem dyntransition };
|
|
allow useradd_t self:process setfscreate;
|
|
allow useradd_t self:fd use;
|
|
allow useradd_t self:fifo_file { read getattr lock ioctl write append };
|
|
allow useradd_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown };
|
|
allow useradd_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };
|
|
allow useradd_t self:unix_dgram_socket sendto;
|
|
allow useradd_t self:unix_stream_socket connectto;
|
|
allow useradd_t self:shm { associate getattr setattr create destroy read write lock unix_read unix_write };
|
|
allow useradd_t self:sem { associate getattr setattr create destroy read write unix_read unix_write };
|
|
allow useradd_t self:msgq { associate getattr setattr create destroy read write enqueue unix_read unix_write };
|
|
allow useradd_t self:msg { send receive };
|
|
|
|
# Allow access to context for shadow file
|
|
kernel_get_selinuxfs_mount_point(useradd_t)
|
|
kernel_validate_selinux_context(useradd_t)
|
|
kernel_compute_selinux_access_vector(useradd_t)
|
|
kernel_compute_selinux_create_context(useradd_t)
|
|
kernel_compute_selinux_relabel_context(useradd_t)
|
|
kernel_compute_selinux_reachable_user_contexts(useradd_t)
|
|
# for getting the number of groups
|
|
kernel_read_kernel_sysctl(useradd_t)
|
|
|
|
filesystem_get_persistent_filesystem_attributes(useradd_t)
|
|
|
|
terminal_use_all_private_physical_terminals(useradd_t)
|
|
terminal_use_all_private_pseudoterminals(useradd_t)
|
|
|
|
init_use_file_descriptors(useradd_t)
|
|
init_script_modify_runtime_data(useradd_t)
|
|
|
|
domain_use_widely_inheritable_file_descriptors(useradd_t)
|
|
|
|
files_manage_general_system_config(useradd_t)
|
|
|
|
libraries_use_dynamic_loader(useradd_t)
|
|
libraries_use_shared_libraries(useradd_t)
|
|
|
|
corecommands_execute_shell(useradd_t)
|
|
# Execute /usr/bin/{passwd,chfn,chsh} and /usr/sbin/{useradd,vipw}.
|
|
corecommands_execute_general_programs(useradd_t)
|
|
corecommands_execute_system_programs(useradd_t)
|
|
|
|
miscfiles_read_localization(useradd_t)
|
|
|
|
selinux_read_config(useradd_t)
|
|
|
|
logging_send_system_log_message(useradd_t)
|
|
|
|
authlogin_manage_shadow_passwords(useradd_t)
|
|
authlogin_modify_last_login_log(useradd_t)
|
|
|
|
ifdef(`TODO',`
|
|
|
|
role sysadm_r types useradd_t;
|
|
domain_auto_trans(sysadm_t, useradd_exec_t, useradd_t)
|
|
|
|
allow useradd_t unpriv_userdomain:fd use;
|
|
can_ypbind(useradd_t)
|
|
ifdef(`automount.te', `
|
|
allow useradd_t autofs_t:dir { search getattr };
|
|
')
|
|
|
|
# Update /etc/shadow and /etc/passwd
|
|
allow useradd_t { etc_t shadow_t }:file { relabelfrom relabelto };
|
|
|
|
# Access terminals.
|
|
ifdef(`gnome-pty-helper.te', `allow useradd_t gphdomain:fd use;')
|
|
|
|
# for when /root is the cwd
|
|
dontaudit useradd_t sysadm_home_dir_t:dir search;
|
|
|
|
# Add/remove user home directories
|
|
file_type_auto_trans(useradd_t, home_root_t, user_home_dir_t, dir)
|
|
file_type_auto_trans(useradd_t, user_home_dir_t, user_home_t)
|
|
|
|
# create/delete mail spool file in /var/mail
|
|
allow useradd_t var_spool_t:dir search;
|
|
allow useradd_t mail_spool_t:dir { search write add_name remove_name };
|
|
allow useradd_t mail_spool_t:file create_file_perms;
|
|
# /var/mail is a link to /var/spool/mail
|
|
allow useradd_t mail_spool_t:lnk_file read;
|
|
') dnl end TODO
|