diff --git a/refpolicy/policy/modules/services/ssh.if b/refpolicy/policy/modules/services/ssh.if index fccc997..6e2d2fe 100644 --- a/refpolicy/policy/modules/services/ssh.if +++ b/refpolicy/policy/modules/services/ssh.if @@ -202,6 +202,10 @@ template(`ssh_per_userdomain_template',` nscd_use_socket($1_ssh_t) ') + optional_policy(`xserver',` + xserver_domtrans_user_xauth($1,$1_ssh_t) + ') + ifdef(`TODO',` # Read /var/run, /var/log. @@ -550,15 +554,65 @@ template(`ssh_server_template', ` ') ######################################## -## Read ssh server keys +## +## Send a SIGCHLD signal to the ssh server. +## +## +## Domain allowed access. +## +# +interface(`ssh_sigchld',` + gen_require(` + type sshd_t; + ') + + allow $1 sshd_t:process sigchld; +') + +######################################## +## +## Read a ssh server unnamed pipe. +## +## +## Domain allowed access. +## +# +interface(`ssh_read_pipe',` + gen_require(` + type sshd_t; + ') + + allow $1 sshd_t:fifo_file { getattr read }; +') + +######################################## +## +## Do not audit attempts to read and write +## ssh server TCP sockets. +## +## +## Domain to not audit. +## +# +interface(`ssh_dontaudit_rw_tcp_socket',` + gen_require(` + type sshd_t; + ') + + dontaudit $1 sshd_t:tcp_socket { read write }; +') + +######################################## +## +## Read ssh server keys +## ## -## The type of the process performing this action. +## Domain allowed access. ## # interface(`ssh_dontaudit_read_server_keys',` gen_require(` type sshd_key_t; - class file { getattr read }; ') dontaudit $1 sshd_key_t:file { getattr read }; diff --git a/refpolicy/policy/modules/services/xdm.te b/refpolicy/policy/modules/services/xdm.te index 1226f45..80006cf 100644 --- a/refpolicy/policy/modules/services/xdm.te +++ b/refpolicy/policy/modules/services/xdm.te @@ -121,6 +121,8 @@ ifdef(`strict_policy',` allow xdm_t xdm_var_run_t:dir manage_dir_perms; allow xdm_t xdm_var_run_t:fifo_file manage_file_perms; files_filetrans_pid(xdm_t,xdm_var_run_t,{ dir fifo_file }) + + xserver_dontaudit_read_all_users_iceauth(xdm_t) ') ifdef(`targeted_policy',` diff --git a/refpolicy/policy/modules/services/xserver.if b/refpolicy/policy/modules/services/xserver.if index d2a3793..f783f67 100644 --- a/refpolicy/policy/modules/services/xserver.if +++ b/refpolicy/policy/modules/services/xserver.if @@ -305,6 +305,16 @@ template(`xserver_per_userdomain_template',` allow $2 $1_xauth_t:process signal; + # allow ps to show xauth + allow $2 $1_xauth_t:dir { search getattr read }; + allow $2 $1_xauth_t:{ file lnk_file } { read getattr }; + allow $2 $1_xauth_t:process getattr; + # We need to suppress this denial because procps tries to access + # /proc/pid/environ and this now triggers a ptrace check in recent kernels + # (2.4 and 2.6). Might want to change procps to not do this, or only if + # running in a privileged domain. + dontaudit $2 $1_xauth_t:process ptrace; + allow $2 $1_xauth_home_t:file manage_file_perms; allow $2 $1_xauth_home_t:file { relabelfrom relabelto }; @@ -325,6 +335,7 @@ template(`xserver_per_userdomain_template',` sysnet_dns_name_resolve($1_xauth_t) userdom_use_user_terminals($1,$1_xauth_t) + userdom_read_user_tmp_files($1,$1_xauth_t) tunable_policy(`use_nfs_home_dirs',` fs_manage_nfs_files($1_xauth_t) @@ -338,20 +349,11 @@ template(`xserver_per_userdomain_template',` nis_use_ypbind($1_xauth_t) ') - ifdef(`TODO',` - ifdef(`ssh.te', ` - domain_auto_trans($1_ssh_t, xauth_exec_t, $1_xauth_t) - dontaudit $1_xauth_t $1_ssh_t:tcp_socket { read write }; - - allow $1_xauth_t sshd_t:fifo_file { getattr read }; - allow $1_xauth_t sshd_t:process sigchld; - ')dnl end if ssh - - # allow ps to show xauth - can_ps($1_t, $1_xauth_t) - - allow $1_xauth_t $1_tmp_t:file { getattr ioctl read }; - ') dnl end TODO + optional_policy(`ssh',` + ssh_sigchld($1_xauth_t) + ssh_read_pipe($1_xauth_t) + ssh_dontaudit_rw_tcp_socket($1_xauth_t) + ') ############################## # @@ -367,6 +369,16 @@ template(`xserver_per_userdomain_template',` allow $1_iceauth_t $1_iceauth_home_t:file manage_file_perms; userdom_filetrans_user_home_dir($1,$1_iceauth_t,$1_iceauth_home_t,file) + # allow ps to show iceauth + allow $2 $1_iceauth_t:dir { search getattr read }; + allow $2 $1_iceauth_t:{ file lnk_file } { read getattr }; + allow $2 $1_iceauth_t:process getattr; + # We need to suppress this denial because procps tries to access + # /proc/pid/environ and this now triggers a ptrace check in recent kernels + # (2.4 and 2.6). Might want to change procps to not do this, or only if + # running in a privileged domain. + dontaudit $2 $1_iceauth_t:process ptrace; + allow $2 $1_iceauth_home_t:file manage_file_perms; allow $2 $1_iceauth_home_t:file { relabelfrom relabelto }; @@ -384,13 +396,6 @@ template(`xserver_per_userdomain_template',` tunable_policy(`use_samba_home_dirs',` fs_manage_cifs_files($1_iceauth_t) ') - - ifdef(`TODO',` - # Supress xdm trying to restore .ICEauthority permissions - ifdef(`xdm.te', ` - dontaudit xdm_t $1_iceauth_home_t:file r_file_perms; - ') - ') dnl end TODO ') ####################################### @@ -449,3 +454,53 @@ template(`xserver_displaymgr_domain_template',` allow $1_xserver_t xdm_tmpfs_t:file rw_file_perms; ') dnl end TODO ') + +######################################## +## +## Transition to a user Xauthority domain. +## +## +## +## Transition to a user Xauthority domain. +## +## +## This is a templated interface, and should only +## be called from a per-userdomain template. +## +## +## +## The prefix of the user domain (e.g., user +## is the prefix for user_t). +## +## +## Domain allowed access. +## +# +template(`xserver_domtrans_user_xauth',` + gen_require(` + type $1_xauth_t, xauth_exec_t; + ') + + domain_auto_trans($2, xauth_exec_t, $1_xauth_t) + allow $2 $1_xauth_t:fd use; + allow $1_xauth_t $2:fd use; + allow $1_xauth_t $2:fifo_file rw_file_perms; + allow $1_xauth_t $2:process sigchld; +') + +######################################## +## +## Do not audit attempts to read all user +## .ICEauthority files. +## +## +## Domain do not audit. +## +# +interface(`xserver_dontaudit_read_all_users_iceauth',` + gen_require(` + attribute iceauth_home_type; + ') + + dontaudit $1 iceauth_home_type:file r_file_perms; +') diff --git a/refpolicy/policy/modules/services/xserver.te b/refpolicy/policy/modules/services/xserver.te index 1f4dcc1..c545ddb 100644 --- a/refpolicy/policy/modules/services/xserver.te +++ b/refpolicy/policy/modules/services/xserver.te @@ -6,6 +6,8 @@ policy_module(xserver,1.0.0) # Declarations # +attribute iceauth_home_type; + type ice_tmp_t; files_tmp_file(ice_tmp_t)
+## Transition to a user Xauthority domain. +##
+## This is a templated interface, and should only +## be called from a per-userdomain template. +##