diff --git a/refpolicy/Changelog b/refpolicy/Changelog index c10c3df..a92ff59 100644 --- a/refpolicy/Changelog +++ b/refpolicy/Changelog @@ -7,6 +7,7 @@ cyrus dovecot distcc + lpd networkmanager xdm diff --git a/refpolicy/policy/modules/kernel/devices.if b/refpolicy/policy/modules/kernel/devices.if index 0919bae..60fe250 100644 --- a/refpolicy/policy/modules/kernel/devices.if +++ b/refpolicy/policy/modules/kernel/devices.if @@ -1412,6 +1412,24 @@ interface(`dev_setattr_printer',` ######################################## ## +## Append the printer device. +## +## +## Domain allowed access. +## +# +# cjp: added for lpd/checkpc_t +interface(`dev_append_printer',` + gen_require(` + type device_t, printer_device_t; + ') + + allow $1 device_t:dir search; + allow $1 printer_device_t:chr_file { getattr append }; +') + +######################################## +## ## Read and write the printer device. ## ## diff --git a/refpolicy/policy/modules/services/lpd.fc b/refpolicy/policy/modules/services/lpd.fc new file mode 100644 index 0000000..fe8bbcb --- /dev/null +++ b/refpolicy/policy/modules/services/lpd.fc @@ -0,0 +1,10 @@ + +/dev/printer -s gen_context(system_u:object_r:printer_t,s0) + +/usr/sbin/checkpc -- gen_context(system_u:object_r:checkpc_exec_t,s0) +/usr/sbin/lpd -- gen_context(system_u:object_r:lpd_exec_t,s0) + +/usr/share/printconf/.* -- gen_context(system_u:object_r:printconf_t,s0) + +/var/spool/lpd(/.*)? gen_context(system_u:object_r:print_spool_t,s0) +/var/run/lprng(/.*)? gen_context(system_u:object_r:lpd_var_run_t,s0) diff --git a/refpolicy/policy/modules/services/lpd.if b/refpolicy/policy/modules/services/lpd.if new file mode 100644 index 0000000..05b956a --- /dev/null +++ b/refpolicy/policy/modules/services/lpd.if @@ -0,0 +1,81 @@ +## Line printer daemon + +######################################## +## +## Execute lpd in the lpd domain. +## +## +## Domain allowed access. +## +# +interface(`lpd_domtrans_checkpc',` + gen_require(` + type checkpc_t, checkpc_exec_t; + ') + + domain_auto_trans($1,checkpc_exec_t,checkpc_t) + + allow $1 checkpc_t:fd use; + allow checkpc_t $1:fd use; + allow checkpc_t $1:fifo_file rw_file_perms; + allow checkpc_t $1:process sigchld; +') + +######################################## +## +## Execute amrecover in the lpd domain, and +## allow the specified role the lpd domain. +## +## +## Domain allowed access. +## +## +## The role to be allowed the lpd domain. +## +## +## The type of the terminal allow the lpd domain to use. +## +# +interface(`lpd_run_checkpc',` + gen_require(` + type checkpc_t; + ') + + lpd_domtrans_checkpc($1) + role $2 types checkpc_t; + allow checkpc_t $3:chr_file rw_term_perms; +') + +######################################## +## +## List the contents of the printer spool directories. +## +## +## Domain allowed access. +## +# +interface(`lpd_list_spool',` + gen_require(` + type print_spool_t; + ') + + files_search_spool($1) + allow $1 print_spool_t:dir list_dir_perms; +') + +######################################## +## +## List the contents of the printer spool directories. +## +## +## Domain allowed access. +## +# +interface(`lpd_read_config',` + gen_require(` + type printconf_t; + ') + + allow $1 printconf_t:dir list_dir_perms; + allow $1 printconf_t:file r_file_perms; +') diff --git a/refpolicy/policy/modules/services/lpd.te b/refpolicy/policy/modules/services/lpd.te new file mode 100644 index 0000000..e9dbcb4 --- /dev/null +++ b/refpolicy/policy/modules/services/lpd.te @@ -0,0 +1,235 @@ + +policy_module(lpd,1.0) + +######################################## +# +# Declarations +# + +type checkpc_t; +type checkpc_exec_t; +init_system_domain(checkpc_t,checkpc_exec_t) +role system_r types checkpc_t; + +type checkpc_log_t; +logging_log_file(checkpc_log_t) + +type lpd_t; +type lpd_exec_t; +init_daemon_domain(lpd_t,lpd_exec_t) + +type lpd_tmp_t; +files_tmp_file(lpd_tmp_t) + +type lpd_var_run_t; +files_pid_file(lpd_var_run_t) + +type print_spool_t; +files_tmp_file(print_spool_t) + +type printer_t; +files_type(printer_t) + +type printconf_t; +files_type(printconf_t) + +######################################## +# +# Checkpc local policy +# + +# Allow checkpc to access the lpd spool so it can check & fix it. +# This requires that /usr/sbin/checkpc have type checkpc_t. + +allow checkpc_t self:capability { setgid setuid dac_override }; +allow checkpc_t self:process { fork signal_perms }; +allow checkpc_t self:unix_stream_socket create_socket_perms; + +allow checkpc_t checkpc_log_t:file create_file_perms; +logging_create_log(checkpc_t,checkpc_log_t) + +allow checkpc_t lpd_var_run_t:dir { search getattr }; +files_search_pids(checkpc_t) + +allow checkpc_t print_spool_t:file { rw_file_perms unlink }; +allow checkpc_t print_spool_t:dir { read write search add_name remove_name getattr }; +files_search_spool(checkpc_t) + +allow checkpc_t printconf_t:file getattr; +allow checkpc_t printconf_t:dir { getattr search read }; + +kernel_read_system_state(checkpc_t) + +allow checkpc_t self:tcp_socket create_socket_perms; +allow checkpc_t self:udp_socket create_socket_perms; +corenet_tcp_sendrecv_all_if(checkpc_t) +corenet_udp_sendrecv_all_if(checkpc_t) +corenet_raw_sendrecv_all_if(checkpc_t) +corenet_tcp_sendrecv_all_nodes(checkpc_t) +corenet_udp_sendrecv_all_nodes(checkpc_t) +corenet_raw_sendrecv_all_nodes(checkpc_t) +corenet_tcp_sendrecv_all_ports(checkpc_t) +corenet_udp_sendrecv_all_ports(checkpc_t) +corenet_tcp_bind_all_nodes(checkpc_t) +corenet_udp_bind_all_nodes(checkpc_t) +corenet_tcp_connect_all_ports(checkpc_t) + +dev_append_printer(checkpc_t) + +# This is less desirable, but checkpc demands /bin/bash and /bin/chown: +corecmd_exec_shell(checkpc_t) +corecmd_exec_bin(checkpc_t) + +domain_use_wide_inherit_fd(checkpc_t) + +files_read_etc_files(checkpc_t) +files_read_etc_runtime_files(checkpc_t) + +init_use_script_pty(checkpc_t) +# Allow access to /dev/console through the fd: +init_use_fd(checkpc_t) + +libs_use_ld_so(checkpc_t) +libs_use_shared_libs(checkpc_t) + +sysnet_read_config(checkpc_t) + +optional_policy(`cron.te',` + cron_system_entry(checkpc_t,checkpc_exec_t) +') + +optional_policy(`logging.te',` + logging_send_syslog_msg(checkpc_t) +') + +optional_policy(`nis.te',` + nis_use_ypbind(checkpc_t) +') + +######################################## +# +# Lpd local policy +# + +allow lpd_t self:capability { setgid setuid net_bind_service dac_read_search dac_override chown fowner }; +dontaudit lpd_t self:capability sys_tty_config; +allow lpd_t self:fifo_file rw_file_perms; +allow lpd_t self:unix_stream_socket create_stream_socket_perms; +allow lpd_t self:unix_dgram_socket create_socket_perms; + +allow lpd_t lpd_tmp_t:dir create_dir_perms; +allow lpd_t lpd_tmp_t:file create_file_perms; +files_create_tmp_files(lpd_t, lpd_tmp_t, { file dir }) + +allow lpd_t lpd_var_run_t:dir rw_dir_perms; +allow lpd_t lpd_var_run_t:file create_file_perms; +allow lpd_t lpd_var_run_t:sock_file create_file_perms; +files_create_pid(lpd_t,lpd_var_run_t) + +# Write to /var/spool/lpd. +allow lpd_t print_spool_t:dir rw_dir_perms; +allow lpd_t print_spool_t:file create_file_perms; +allow lpd_t print_spool_t:file rw_file_perms; +files_search_spool(lpd_t) + +# lpd must be able to execute the filter utilities in /usr/share/printconf. +allow lpd_t printconf_t:dir { getattr search read }; +can_exec(lpd_t, printconf_t) + +# Create and bind to /dev/printer. +allow lpd_t printer_t:lnk_file create_lnk_perms; +dev_create_dev_node(lpd_t,printer_t,lnk_file) +# cjp: I believe these have no effect: +allow lpd_t printer_t:unix_stream_socket name_bind; +allow lpd_t printer_t:unix_dgram_socket name_bind; + +kernel_read_kernel_sysctl(lpd_t) +# bash wants access to /proc/meminfo +kernel_read_system_state(lpd_t) + +allow lpd_t self:tcp_socket create_stream_socket_perms; +allow lpd_t self:udp_socket create_stream_socket_perms; +corenet_tcp_sendrecv_all_if(lpd_t) +corenet_udp_sendrecv_all_if(lpd_t) +corenet_raw_sendrecv_all_if(lpd_t) +corenet_tcp_sendrecv_all_nodes(lpd_t) +corenet_udp_sendrecv_all_nodes(lpd_t) +corenet_raw_sendrecv_all_nodes(lpd_t) +corenet_tcp_sendrecv_all_ports(lpd_t) +corenet_udp_sendrecv_all_ports(lpd_t) +corenet_tcp_bind_all_nodes(lpd_t) +corenet_udp_bind_all_nodes(lpd_t) +corenet_tcp_bind_printer_port(lpd_t) + +dev_read_sysfs(lpd_t) +dev_rw_printer(lpd_t) + +fs_getattr_all_fs(lpd_t) +fs_search_auto_mountpoints(lpd_t) + +term_dontaudit_use_console(lpd_t) + +# Filter scripts may be shell scripts, and may invoke progs like /bin/mktemp +corecmd_exec_bin(lpd_t) +corecmd_exec_sbin(lpd_t) +corecmd_exec_shell(lpd_t) + +domain_use_wide_inherit_fd(lpd_t) + +files_read_etc_runtime_files(lpd_t) +files_read_usr_files(lpd_t) +# for defoma +files_list_world_readable(lpd_t) +files_read_world_readable_files(lpd_t) +files_read_world_readable_symlinks(lpd_t) +files_list_var_lib(lpd_t) +files_read_var_lib_files(lpd_t) +files_read_var_lib_symlinks(lpd_t) +# config files for lpd are of type etc_t, probably should change this +files_read_etc_files(lpd_t) + +init_use_fd(lpd_t) +init_use_script_pty(lpd_t) + +libs_use_ld_so(lpd_t) +libs_use_shared_libs(lpd_t) + +logging_send_syslog_msg(lpd_t) + +miscfiles_read_fonts(lpd_t) +miscfiles_read_localization(lpd_t) + +sysnet_read_config(lpd_t) + +userdom_dontaudit_use_unpriv_user_fd(lpd_t) +userdom_dontaudit_search_sysadm_home_dir(lpd_t) + +ifdef(`targeted_policy',` + term_dontaudit_use_unallocated_tty(lpd_t) + term_dontaudit_use_generic_pty(lpd_t) + files_dontaudit_read_root_file(lpd_t) +') + +optional_policy(`nis.te',` + nis_use_ypbind(lpd_t) + nis_tcp_connect_ypbind(lpd_t) +') + +optional_policy(`portmap.te',` + portmap_udp_sendto(lpd_t) +') + +optional_policy(`selinuxutil.te',` + seutil_sigchld_newrole(lpd_t) +') + +optional_policy(`udev.te', ` + udev_read_db(lpd_t) +') + +ifdef(`TODO',` +optional_policy(`rhgb.te',` + rhgb_domain(lpd_t) +') +') dnl end TODO + diff --git a/refpolicy/policy/modules/services/nis.if b/refpolicy/policy/modules/services/nis.if index 7d3fbc9..7646adb 100644 --- a/refpolicy/policy/modules/services/nis.if +++ b/refpolicy/policy/modules/services/nis.if @@ -133,7 +133,7 @@ interface(`nis_signal_ypbind',` ######################################## ## -## Send UDP network traffic to NIS clients. +## List the contents of the NIS data directory. ## ## ## The type of the process performing this action. @@ -164,3 +164,21 @@ interface(`nis_udp_sendto_ypbind',` allow $1 ypbind_t:udp_socket sendto; allow ypbind_t $1:udp_socket recvfrom; ') + +######################################## +## +## Connect to ypbind over TCP. +## +## +## Domain allowed access. +## +# +interface(`nis_tcp_connect_ypbind',` + gen_require(` + type ypbind_t; + ') + + allow $1 ypbind_t:tcp_socket { connectto recvfrom }; + allow ypbind_t $1:tcp_socket { acceptfrom recvfrom }; + allow $1 kernel_t:tcp_socket recvfrom; +') diff --git a/refpolicy/policy/modules/services/nis.te b/refpolicy/policy/modules/services/nis.te index 7928f96..7b8811c 100644 --- a/refpolicy/policy/modules/services/nis.te +++ b/refpolicy/policy/modules/services/nis.te @@ -58,6 +58,7 @@ allow ypbind_t var_yp_t:file create_file_perms; kernel_read_kernel_sysctl(ypbind_t) kernel_list_proc(ypbind_t) kernel_read_proc_symlinks(ypbind_t) +kernel_tcp_recvfrom(ypbind_t) corenet_tcp_sendrecv_all_if(ypbind_t) corenet_udp_sendrecv_all_if(ypbind_t) diff --git a/refpolicy/policy/modules/system/corecommands.fc b/refpolicy/policy/modules/system/corecommands.fc index d1c6e25..b8c3956 100644 --- a/refpolicy/policy/modules/system/corecommands.fc +++ b/refpolicy/policy/modules/system/corecommands.fc @@ -106,6 +106,7 @@ ifdef(`distro_suse', ` /usr/share/gnucash/finance-quote-check -- gen_context(system_u:object_r:bin_t,s0) /usr/share/gnucash/finance-quote-helper -- gen_context(system_u:object_r:bin_t,s0) /usr/share/mc/extfs/.* -- gen_context(system_u:object_r:bin_t,s0) +/usr/share/printconf/util/print\.py -- gen_context(system_u:object_r:bin_t,s0) /usr/share/turboprint/lib(/.*)? -- gen_context(system_u:object_r:bin_t,s0) ifdef(`distro_suse',` diff --git a/refpolicy/policy/modules/system/init.te b/refpolicy/policy/modules/system/init.te index 92351e3..40d390b 100644 --- a/refpolicy/policy/modules/system/init.te +++ b/refpolicy/policy/modules/system/init.te @@ -505,6 +505,17 @@ optional_policy(`loadkeys.te',` loadkeys_exec(initrc_t) ') +optional_policy(`lpd.te',` + # This is needed to permit chown to read /var/spool/lpd/lp. + # This is opens up security more than necessary; this means that ANYTHING + # running in the initrc_t domain can read the printer spool directory. + # Perhaps executing /etc/rc.d/init.d/lpd should transition + # to domain lpd_t, instead of waiting for executing lpd. + lpd_list_spool(initrc_t) + + lpd_read_config(initrc_t) +') + optional_policy(`lvm.te',` #allow initrc_t lvm_control_t:chr_file unlink; diff --git a/refpolicy/policy/modules/system/userdomain.te b/refpolicy/policy/modules/system/userdomain.te index 87a536a..5c3d0cd 100644 --- a/refpolicy/policy/modules/system/userdomain.te +++ b/refpolicy/policy/modules/system/userdomain.te @@ -190,6 +190,10 @@ ifdef(`targeted_policy',` logrotate_run(sysadm_t,sysadm_r,admin_terminal) ') + optional_policy(`lpd.te',` + lpd_run_checkpc(sysadm_t,sysadm_r,admin_terminal) + ') + optional_policy(`kudzu.te',` kudzu_run(sysadm_t,sysadm_r,admin_terminal) ')