183 lines
5.1 KiB
Plaintext
183 lines
5.1 KiB
Plaintext
## <summary>Execute a command with a substitute user</summary>
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#######################################
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## <summary>
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## The per user domain template for the sudo module.
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## </summary>
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## <desc>
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## <p>
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## This template creates a derived domain which is allowed
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## to change the linux user id, to run commands as a different
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## user.
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## </p>
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## <p>
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## This template is invoked automatically for each user, and
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## generally does not need to be invoked directly
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## by policy writers.
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## </p>
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## </desc>
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## <param name="userdomain_prefix">
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## The prefix of the user domain (e.g., user
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## is the prefix for user_t).
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## </param>
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## <param name="user_domain">
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## The type of the user domain.
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## </param>
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## <param name="user_role">
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## The role associated with the user domain.
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## </param>
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#
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template(`sudo_per_userdomain_template',`
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gen_require(`
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type sudo_exec_t;
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bool secure_mode;
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')
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##############################
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#
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# Declarations
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#
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type $1_sudo_t;
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domain_type($1_sudo_t)
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domain_entry_file($1_sudo_t,sudo_exec_t)
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domain_wide_inherit_fd($1_sudo_t)
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domain_subj_id_change_exempt($1_sudo_t)
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domain_role_change_exempt($1_sudo_t)
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domain_obj_id_change_exempt($1_sudo_t)
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role $3 types $1_sudo_t;
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##############################
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#
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# Local Policy
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#
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# Use capabilities.
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allow $1_sudo_t self:capability { fowner setuid setgid dac_override sys_resource };
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allow $1_sudo_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
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allow $1_sudo_t self:process { setexec setrlimit };
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allow $1_sudo_t self:fd use;
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allow $1_sudo_t self:fifo_file rw_file_perms;
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allow $1_sudo_t self:shm create_shm_perms;
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allow $1_sudo_t self:sem create_sem_perms;
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allow $1_sudo_t self:msgq create_msgq_perms;
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allow $1_sudo_t self:msg { send receive };
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allow $1_sudo_t self:unix_dgram_socket create_socket_perms;
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allow $1_sudo_t self:unix_stream_socket create_stream_socket_perms;
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allow $1_sudo_t self:unix_dgram_socket sendto;
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allow $1_sudo_t self:unix_stream_socket connectto;
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allow $1_sudo_t self:netlink_audit_socket { create bind write nlmsg_read read };
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# Enter this derived domain from the user domain
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domain_auto_trans($2, sudo_exec_t, $1_sudo_t)
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allow $1_sudo_t $2:fd use;
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allow $2 $1_sudo_t:fd use;
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allow $2 $1_sudo_t:fifo_file rw_file_perms;
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allow $2 $1_sudo_t:process sigchld;
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# By default, revert to the calling domain when a shell is executed.
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corecmd_shell_domtrans($1_sudo_t,$2)
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allow $2 $1_sudo_t:fd use;
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allow $1_sudo_t $2:fd use;
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allow $1_sudo_t $2:fifo_file rw_file_perms;
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allow $1_sudo_t $2:process sigchld;
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kernel_read_kernel_sysctl($1_sudo_t)
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kernel_read_system_state($1_sudo_t)
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dev_read_urand($1_sudo_t)
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fs_search_auto_mountpoints($1_sudo_t)
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fs_getattr_xattr_fs($1_sudo_t)
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selinux_get_fs_mount($1_sudo_t)
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selinux_validate_context($1_sudo_t)
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selinux_compute_access_vector($1_sudo_t)
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selinux_compute_create_context($1_sudo_t)
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selinux_compute_relabel_context($1_sudo_t)
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selinux_compute_user_contexts($1_sudo_t)
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term_use_all_user_ttys($1_sudo_t)
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term_use_all_user_ptys($1_sudo_t)
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term_relabel_all_user_ttys($1_sudo_t)
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term_relabel_all_user_ptys($1_sudo_t)
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auth_domtrans_chk_passwd($1_sudo_t)
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corecmd_getattr_bin_file($1_sudo_t)
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corecmd_read_sbin_symlink($1_sudo_t)
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corecmd_getattr_sbin_file($1_sudo_t)
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domain_use_wide_inherit_fd($1_sudo_t)
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domain_sigchld_wide_inherit_fd($1_sudo_t)
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domain_getattr_all_entry_files($1_sudo_t)
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files_read_etc_files($1_sudo_t)
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files_read_var_files($1_sudo_t)
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files_read_usr_symlinks($1_sudo_t)
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files_getattr_usr_files($1_sudo_t)
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# for some PAM modules and for cwd
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files_dontaudit_search_home($1_sudo_t)
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init_rw_script_pid($1_sudo_t)
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libs_use_ld_so($1_sudo_t)
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libs_use_shared_libs($1_sudo_t)
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logging_send_syslog_msg($1_sudo_t)
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miscfiles_read_localization($1_sudo_t)
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mls_file_read_up($1_sudo_t)
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mls_file_write_down($1_sudo_t)
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mls_file_upgrade($1_sudo_t)
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mls_file_downgrade($1_sudo_t)
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mls_process_set_level($1_sudo_t)
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seutil_read_config($1_sudo_t)
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seutil_read_default_contexts($1_sudo_t)
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userdom_manage_user_home_subdir_files($1,$1_sudo_t)
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userdom_manage_user_home_subdir_symlinks($1,$1_sudo_t)
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userdom_manage_user_tmp_files($1,$1_sudo_t)
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userdom_manage_user_tmp_symlinks($1,$1_sudo_t)
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userdom_use_unpriv_users_fd($1_sudo_t)
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# for some PAM modules and for cwd
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userdom_dontaudit_search_all_users_home($1_sudo_t)
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# if secure mode is enabled, then sudo
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# can only transition to unprivileged users
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if(secure_mode) {
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userdom_spec_domtrans_unpriv_users($1_sudo_t)
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} else {
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userdom_spec_domtrans_all_users($1_sudo_t)
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}
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optional_policy(`nis.te',`
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nis_use_ypbind($1_sudo_t)
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')
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optional_policy(`nscd.te',`
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nscd_use_socket($1_sudo_t)
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')
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ifdef(`TODO',`
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ifdef(`gnome-pty-helper.te', `allow $1_sudo_t gphdomain:fd use;')
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# for when the network connection is killed
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dontaudit unpriv_userdomain $1_sudo_t:process signal;
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ifdef(`mta.te', `
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domain_auto_trans($1_sudo_t, sendmail_exec_t, $1_mail_t)
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allow $1_mail_t $1_sudo_t:fifo_file rw_file_perms;
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')
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ifdef(`pam.te', `
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allow $1_sudo_t pam_var_run_t:dir create_dir_perms;
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allow $1_sudo_t pam_var_run_t:file create_file_perms;
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')
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') dnl end TODO
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')
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