commit: d124bc67058d9f7913289dec07b0b4cb27e25acf
Author: Dave Sugar <dsugar <AT> tresys <DOT> com>
AuthorDate: Mon Mar 5 14:03:01 2018 +0000
Commit: Sven Vermeulen <swift <AT> gentoo <DOT> org>
CommitDate: Sun Mar 25 09:31:07 2018 +0000
URL:
https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=d124bc67
Policy for chronyc - it was running in init_t domain
This patch is creating a new domain for /usr/bin/chronyc. This is a cli
program that talks to a running chronyd process. chronyc is used by
chrony-wait.service and I was seeing chronyc running in the init_t domain when
started this way.
Interface name updated based on suggestions.
Signed-off-by: Dave Sugar <dsugar <AT> tresys.com>
policy/modules/contrib/chronyd.fc | 1 +
policy/modules/contrib/chronyd.if | 20 +++++++++++++++++
policy/modules/contrib/chronyd.te | 46 +++++++++++++++++++++++++++++++++++++--
3 files changed, 65 insertions(+), 2 deletions(-)
diff --git a/policy/modules/contrib/chronyd.fc
b/policy/modules/contrib/chronyd.fc
index 445f3749..7153deee 100644
--- a/policy/modules/contrib/chronyd.fc
+++ b/policy/modules/contrib/chronyd.fc
@@ -9,6 +9,7 @@
/usr/lib/systemd/system/[^/]*chrony-wait.* --
gen_context(system_u:object_r:chronyd_unit_t,s0)
/usr/lib/systemd/system/[^/]*chronyd.* --
gen_context(system_u:object_r:chronyd_unit_t,s0)
+/usr/bin/chronyc --
gen_context(system_u:object_r:chronyc_exec_t,s0)
/usr/sbin/chronyd --
gen_context(system_u:object_r:chronyd_exec_t,s0)
/var/lib/chrony(/.*)?
gen_context(system_u:object_r:chronyd_var_lib_t,s0)
diff --git a/policy/modules/contrib/chronyd.if
b/policy/modules/contrib/chronyd.if
index a42bc4f4..32988914 100644
--- a/policy/modules/contrib/chronyd.if
+++ b/policy/modules/contrib/chronyd.if
@@ -252,6 +252,26 @@ interface(`chronyd_status',`
allow $1 chronyd_unit_t:service status;
')
+########################################
+## <summary>
+## Send to chronyd command line interface using a unix domain
+## datagram socket.
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`chronyd_dgram_send_cli',`
+ gen_require(`
+ type chronyc_t, chronyd_var_run_t;
+ ')
+
+ files_search_pids($1)
+ dgram_send_pattern($1, chronyd_var_run_t, chronyd_var_run_t, chronyc_t)
+')
+
####################################
## <summary>
## All of the rules required to
diff --git a/policy/modules/contrib/chronyd.te
b/policy/modules/contrib/chronyd.te
index f28dd5e6..0634548d 100644
--- a/policy/modules/contrib/chronyd.te
+++ b/policy/modules/contrib/chronyd.te
@@ -9,6 +9,10 @@ type chronyd_t;
type chronyd_exec_t;
init_daemon_domain(chronyd_t, chronyd_exec_t)
+type chronyc_t;
+type chronyc_exec_t;
+init_daemon_domain(chronyc_t, chronyc_exec_t)
+
type chronyd_conf_t;
files_config_file(chronyd_conf_t)
@@ -35,10 +39,10 @@ init_daemon_pid_file(chronyd_var_run_t, dir, "chrony")
########################################
#
-# Local policy
+# chronyd local policy
#
-allow chronyd_t self:capability { dac_override ipc_lock setgid setuid
sys_resource sys_time };
+allow chronyd_t self:capability { chown dac_override ipc_lock setgid setuid
sys_resource sys_time };
allow chronyd_t self:process { getcap setcap setrlimit signal };
allow chronyd_t self:shm create_shm_perms;
allow chronyd_t self:fifo_file rw_fifo_file_perms;
@@ -91,6 +95,7 @@ logging_send_syslog_msg(chronyd_t)
miscfiles_read_localization(chronyd_t)
+chronyd_dgram_send_cli(chronyd_t)
chronyd_read_config(chronyd_t)
optional_policy(`
@@ -100,3 +105,40 @@ optional_policy(`
optional_policy(`
mta_send_mail(chronyd_t)
')
+
+########################################
+#
+# chronyc local policy
+#
+
+allow chronyc_t self:capability { dac_override };
+allow chronyc_t self:process { signal };
+allow chronyc_t self:udp_socket create_socket_perms;
+allow chronyc_t self:netlink_route_socket create_netlink_socket_perms;
+
+manage_dirs_pattern(chronyc_t, chronyd_var_run_t, chronyd_var_run_t)
+manage_files_pattern(chronyc_t, chronyd_var_run_t, chronyd_var_run_t)
+manage_sock_files_pattern(chronyc_t, chronyd_var_run_t, chronyd_var_run_t)
+files_pid_filetrans(chronyc_t, chronyd_var_run_t, { dir file sock_file })
+
+corenet_all_recvfrom_unlabeled(chronyc_t)
+corenet_all_recvfrom_netlabel(chronyc_t)
+corenet_udp_sendrecv_generic_if(chronyc_t)
+corenet_udp_sendrecv_generic_node(chronyc_t)
+
+corenet_sendrecv_chronyd_client_packets(chronyc_t)
+corenet_udp_sendrecv_chronyd_port(chronyc_t)
+
+files_read_etc_files(chronyc_t)
+files_read_usr_files(chronyc_t)
+
+logging_send_syslog_msg(chronyc_t)
+
+sysnet_read_config(chronyc_t)
+sysnet_dns_name_resolve(chronyc_t)
+
+miscfiles_read_localization(chronyc_t)
+
+chronyd_dgram_send(chronyc_t)
+chronyd_read_config(chronyc_t)
+
