c5eae5f83c
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715 lines
14 KiB
Plaintext
715 lines
14 KiB
Plaintext
## <summary>Periodic execution of scheduled commands.</summary>
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#######################################
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## <summary>
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## The common rules for a crontab domain.
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## </summary>
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## <param name="userdomain_prefix">
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## <summary>
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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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## </summary>
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## </param>
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#
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template(`cron_common_crontab_template',`
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gen_require(`
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type crond_t, crond_var_run_t, crontab_exec_t;
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type cron_spool_t, user_cron_spool_t;
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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_t;
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application_domain($1_t, crontab_exec_t)
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ubac_constrained($1_t)
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type $1_tmp_t;
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files_tmp_file($1_tmp_t)
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##############################
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#
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# Local policy
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#
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# dac_override is to create the file in the directory under /tmp
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allow $1_t self:capability { fowner setuid setgid chown dac_override };
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allow $1_t self:process { setsched signal_perms };
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allow $1_t self:fifo_file rw_fifo_file_perms;
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allow $1_t crond_t:process signal;
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allow $1_t crond_var_run_t:file read_file_perms;
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manage_dirs_pattern($1_t, $1_tmp_t, $1_tmp_t)
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manage_files_pattern($1_t, $1_tmp_t, $1_tmp_t)
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files_tmp_filetrans($1_t, $1_tmp_t, { dir file })
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# create files in /var/spool/cron
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manage_files_pattern($1_t, { cron_spool_t user_cron_spool_t }, user_cron_spool_t)
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filetrans_pattern($1_t, cron_spool_t, user_cron_spool_t, file)
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files_list_spool($1_t)
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# crontab signals crond by updating the mtime on the spooldir
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allow $1_t cron_spool_t:dir setattr;
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kernel_read_system_state($1_t)
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# for the checks used by crontab -u
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selinux_dontaudit_search_fs($1_t)
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fs_getattr_xattr_fs($1_t)
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domain_use_interactive_fds($1_t)
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files_read_etc_files($1_t)
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files_read_usr_files($1_t)
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files_dontaudit_search_pids($1_t)
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auth_domtrans_chk_passwd($1_t)
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logging_send_syslog_msg($1_t)
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logging_send_audit_msgs($1_t)
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logging_set_loginuid($1_t)
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init_dontaudit_write_utmp($1_t)
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init_read_utmp($1_t)
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miscfiles_read_localization($1_t)
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seutil_read_config($1_t)
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userdom_manage_user_tmp_dirs($1_t)
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userdom_manage_user_tmp_files($1_t)
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# Access terminals.
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userdom_use_user_terminals($1_t)
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# Read user crontabs
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userdom_read_user_home_content_files($1_t)
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userdom_read_user_home_content_symlinks($1_t)
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tunable_policy(`fcron_crond',`
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# fcron wants an instant update of a crontab change for the administrator
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# also crontab does a security check for crontab -u
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dontaudit $1_t crond_t:process signal;
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')
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optional_policy(`
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nscd_socket_use($1_t)
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')
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')
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########################################
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## <summary>
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## Role access for cron
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## </summary>
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## <param name="role">
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## <summary>
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## Role allowed access
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## User domain for the role
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## </summary>
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## </param>
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#
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interface(`cron_role',`
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gen_require(`
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type cronjob_t, crontab_t, crontab_exec_t;
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type user_cron_spool_t;
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type crond_t;
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')
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role $1 types { cronjob_t crontab_t };
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# cronjob shows up in user ps
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ps_process_pattern($2, cronjob_t)
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# Transition from the user domain to the derived domain.
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domtrans_pattern($2, crontab_exec_t, crontab_t)
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allow crond_t $2:process transition;
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dontaudit crond_t $2:process { noatsecure siginh rlimitinh };
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allow $2 crond_t:process sigchld;
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# needs to be authorized SELinux context for cron
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allow $2 user_cron_spool_t:file entrypoint;
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# crontab shows up in user ps
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ps_process_pattern($2, crontab_t)
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allow $2 crontab_t:process signal;
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# Run helper programs as the user domain
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#corecmd_bin_domtrans(crontab_t, $2)
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#corecmd_shell_domtrans(crontab_t, $2)
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corecmd_exec_bin(crontab_t)
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corecmd_exec_shell(crontab_t)
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optional_policy(`
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gen_require(`
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class dbus send_msg;
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')
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dbus_stub(cronjob_t)
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allow cronjob_t $2:dbus send_msg;
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')
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')
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########################################
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## <summary>
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## Role access for unconfined cronjobs
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## </summary>
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## <param name="role">
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## <summary>
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## Role allowed access
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## User domain for the role
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## </summary>
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## </param>
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#
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interface(`cron_unconfined_role',`
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gen_require(`
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type unconfined_cronjob_t;
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')
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role $1 types unconfined_cronjob_t;
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# cronjob shows up in user ps
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ps_process_pattern($2, unconfined_cronjob_t)
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optional_policy(`
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gen_require(`
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class dbus send_msg;
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')
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dbus_stub(unconfined_cronjob_t)
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allow unconfined_cronjob_t $2:dbus send_msg;
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')
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')
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########################################
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## <summary>
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## Role access for cron
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## </summary>
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## <param name="role">
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## <summary>
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## Role allowed access
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## User domain for the role
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## </summary>
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## </param>
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#
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interface(`cron_admin_role',`
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gen_require(`
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type cronjob_t, crontab_exec_t, admin_crontab_t, admin_crontab_tmp_t;
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class passwd crontab;
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')
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role $1 types { cronjob_t admin_crontab_t admin_crontab_tmp_t };
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# cronjob shows up in user ps
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ps_process_pattern($2, cronjob_t)
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# Manipulate other users crontab.
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allow $2 self:passwd crontab;
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# Transition from the user domain to the derived domain.
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domtrans_pattern($2, crontab_exec_t, admin_crontab_t)
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# crontab shows up in user ps
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ps_process_pattern($2, admin_crontab_t)
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allow $2 admin_crontab_t:process signal;
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# Run helper programs as the user domain
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#corecmd_bin_domtrans(admin_crontab_t, $2)
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#corecmd_shell_domtrans(admin_crontab_t, $2)
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corecmd_exec_bin(admin_crontab_t)
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corecmd_exec_shell(admin_crontab_t)
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optional_policy(`
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gen_require(`
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class dbus send_msg;
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')
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dbus_stub(admin_cronjob_t)
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allow cronjob_t $2:dbus send_msg;
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')
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')
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########################################
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## <summary>
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## Make the specified program domain accessable
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## from the system cron jobs.
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## </summary>
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## <param name="domain">
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## <summary>
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## The type of the process to transition to.
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## </summary>
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## </param>
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## <param name="entrypoint">
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## <summary>
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## The type of the file used as an entrypoint to this domain.
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## </summary>
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## </param>
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#
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interface(`cron_system_entry',`
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gen_require(`
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type crond_t, system_cronjob_t;
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')
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domtrans_pattern(system_cronjob_t, $2, $1)
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domtrans_pattern(crond_t, $2, $1)
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role system_r types $1;
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')
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########################################
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## <summary>
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## Execute cron in the cron system domain.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed to transition.
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## </summary>
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## </param>
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#
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interface(`cron_domtrans',`
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gen_require(`
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type system_cronjob_t, crond_exec_t;
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')
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domtrans_pattern($1, crond_exec_t, system_cronjob_t)
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')
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########################################
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## <summary>
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## Execute crond_exec_t
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_exec',`
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gen_require(`
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type crond_exec_t;
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')
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can_exec($1, crond_exec_t)
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')
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########################################
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## <summary>
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## Execute crond server in the nscd domain.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed to transition.
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## </summary>
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## </param>
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#
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interface(`cron_initrc_domtrans',`
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gen_require(`
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type crond_initrc_exec_t;
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')
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init_labeled_script_domtrans($1, crond_initrc_exec_t)
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')
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########################################
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## <summary>
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## Inherit and use a file descriptor
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## from the cron daemon.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_use_fds',`
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gen_require(`
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type crond_t;
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')
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allow $1 crond_t:fd use;
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')
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########################################
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## <summary>
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## Send a SIGCHLD signal to the cron daemon.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_sigchld',`
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gen_require(`
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type crond_t;
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')
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allow $1 crond_t:process sigchld;
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')
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########################################
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## <summary>
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## Read a cron daemon unnamed pipe.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_read_pipes',`
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gen_require(`
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type crond_t;
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')
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allow $1 crond_t:fifo_file read_fifo_file_perms;
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')
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########################################
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## <summary>
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## Do not audit attempts to write cron daemon unnamed pipes.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain to not audit.
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## </summary>
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## </param>
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#
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interface(`cron_dontaudit_write_pipes',`
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gen_require(`
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type crond_t;
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')
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dontaudit $1 crond_t:fifo_file write;
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')
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########################################
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## <summary>
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## Read and write a cron daemon unnamed pipe.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_rw_pipes',`
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gen_require(`
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type crond_t;
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')
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allow $1 crond_t:fifo_file rw_inherited_fifo_file_perms;
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')
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########################################
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## <summary>
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## Read and write inherited user spool files.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_rw_inherited_user_spool_files',`
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gen_require(`
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type user_cron_spool_t;
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')
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allow $1 user_cron_spool_t:file rw_inherited_file_perms;
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')
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########################################
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## <summary>
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## Read and write inherited spool files.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_rw_inherited_spool_files',`
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gen_require(`
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type cron_spool_t;
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')
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allow $1 cron_spool_t:file rw_inherited_file_perms;
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')
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########################################
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## <summary>
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## Read, and write cron daemon TCP sockets.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_rw_tcp_sockets',`
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gen_require(`
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type crond_t;
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')
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allow $1 crond_t:tcp_socket { read write };
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')
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########################################
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## <summary>
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## Dontaudit Read, and write cron daemon TCP sockets.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain to not audit.
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## </summary>
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## </param>
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#
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interface(`cron_dontaudit_rw_tcp_sockets',`
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gen_require(`
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type crond_t;
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')
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dontaudit $1 crond_t:tcp_socket { read write };
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')
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########################################
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## <summary>
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## Search the directory containing user cron tables.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_search_spool',`
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gen_require(`
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type cron_spool_t;
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')
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files_search_spool($1)
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allow $1 cron_spool_t:dir search_dir_perms;
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')
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########################################
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## <summary>
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## Manage pid files used by cron
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_manage_pid_files',`
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gen_require(`
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type crond_var_run_t;
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')
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manage_files_pattern($1, crond_var_run_t, crond_var_run_t)
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')
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########################################
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## <summary>
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## Execute anacron in the cron system domain.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed to transition.
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## </summary>
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## </param>
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#
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interface(`cron_anacron_domtrans_system_job',`
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gen_require(`
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type system_cronjob_t, anacron_exec_t;
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')
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domtrans_pattern($1, anacron_exec_t, system_cronjob_t)
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')
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########################################
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## <summary>
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## Inherit and use a file descriptor
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## from system cron jobs.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`cron_use_system_job_fds',`
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gen_require(`
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type system_cronjob_t;
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')
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allow $1 system_cronjob_t:fd use;
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')
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########################################
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## <summary>
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## Write a system cron job unnamed pipe.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
|
|
#
|
|
interface(`cron_write_system_job_pipes',`
|
|
gen_require(`
|
|
type system_cronjob_t;
|
|
')
|
|
|
|
allow $1 system_cronjob_t:file write;
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Read and write a system cron job unnamed pipe.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain allowed access.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`cron_rw_system_job_pipes',`
|
|
gen_require(`
|
|
type system_cronjob_t;
|
|
')
|
|
|
|
allow $1 system_cronjob_t:fifo_file rw_inherited_fifo_file_perms;
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Allow read/write unix stream sockets from the system cron jobs.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain allowed access.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`cron_rw_system_job_stream_sockets',`
|
|
gen_require(`
|
|
type system_cronjob_t;
|
|
')
|
|
|
|
allow $1 system_cronjob_t:unix_stream_socket { read write };
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Read temporary files from the system cron jobs.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain allowed access.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`cron_read_system_job_tmp_files',`
|
|
gen_require(`
|
|
type system_cronjob_tmp_t, cron_var_run_t;
|
|
')
|
|
|
|
files_search_tmp($1)
|
|
allow $1 system_cronjob_tmp_t:file read_file_perms;
|
|
|
|
files_search_pids($1)
|
|
allow $1 cron_var_run_t:file read_file_perms;
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Do not audit attempts to append temporary
|
|
## files from the system cron jobs.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain to not audit.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`cron_dontaudit_append_system_job_tmp_files',`
|
|
gen_require(`
|
|
type system_cronjob_tmp_t;
|
|
')
|
|
|
|
dontaudit $1 system_cronjob_tmp_t:file append_file_perms;
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Do not audit attempts to write temporary
|
|
## files from the system cron jobs.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain to not audit.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`cron_dontaudit_write_system_job_tmp_files',`
|
|
gen_require(`
|
|
type system_cronjob_tmp_t;
|
|
type cron_var_run_t;
|
|
')
|
|
|
|
dontaudit $1 system_cronjob_tmp_t:file write_file_perms;
|
|
dontaudit $1 cron_var_run_t:file write_file_perms;
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Read temporary files from the system cron jobs.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain allowed access.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`cron_read_system_job_lib_files',`
|
|
gen_require(`
|
|
type system_cronjob_var_lib_t;
|
|
')
|
|
|
|
read_files_pattern($1, system_cronjob_var_lib_t, system_cronjob_var_lib_t)
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Manage files from the system cron jobs.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain allowed access.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`cron_manage_system_job_lib_files',`
|
|
gen_require(`
|
|
type system_cronjob_var_lib_t;
|
|
')
|
|
|
|
manage_files_pattern($1, system_cronjob_var_lib_t, system_cronjob_var_lib_t)
|
|
')
|