I'm seeing the following denials when attempting to get a DHCP address.
type=AVC msg=audit(1549471325.440:199): avc: denied { name_bind } for pid=6964 comm="systemd-network" src=68 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:dhcpc_port_t:s0 tclass=udp_socket permissive=1
type=AVC msg=audit(1549471325.440:199): avc: denied { node_bind } for pid=6964 comm="systemd-network" saddr=10.1.12.61 src=68 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=udp_socket permissive=1
type=AVC msg=audit(1549471325.440:199): avc: denied { net_bind_service } for pid=6964 comm="systemd-network" capability=10 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:system_r:systemd_networkd_t:s0 tclass=capability permissive=1
type=SYSCALL msg=audit(1549471325.440:199): arch=c000003e syscall=49 success=yes exit=0 a0=b a1=7fff09388780 a2=10 a3=7fff09388778 items=0 ppid=1 pid=6964 auid=4294967295 uid=192 gid=192 euid=192 suid=192 fsuid=192 egid=192 sgid=192 fsgid=192 tty=(none) ses=4294967295 comm="systemd-network" exe="/usr/lib/systemd/systemd-networkd" subj=system_u:system_r:systemd_networkd_t:s0 key=(null)
Signed-off-by: Dave Sugar <[email protected]>
---
policy/modules/system/systemd.te | 2 ++
1 file changed, 2 insertions(+)
diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te
index 64e36c66..cd88e621 100644
--- a/policy/modules/system/systemd.te
+++ b/policy/modules/system/systemd.te
@@ -651,6 +651,8 @@ corecmd_bin_entry_type(systemd_networkd_t)
corecmd_exec_bin(systemd_networkd_t)
corenet_rw_tun_tap_dev(systemd_networkd_t)
+corenet_udp_bind_dhcpc_port(systemd_networkd_t)
+corenet_udp_bind_generic_node(systemd_networkd_t)
dev_read_urand(systemd_networkd_t)
dev_read_sysfs(systemd_networkd_t)
--
2.20.1
systemd-modules-load is used to pre-load kernal modules as the system comes up.
It was running initc_t which didn't have permissions to actually load kernel
modules. This change sets up a new domain for this service and grants permission
necessary to load kernel modules.
Feb 05 03:38:20 4c4c4544-0052-5410-8043-b1c04f503232 kernel: type=1400 audit(1549337898.886:10): avc: denied { read } for pid=4257 comm="systemd-modules" name="fuse.ko.xz" dev="dm-1" ino=2390271 scontext=system_u:system_r:initrc_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=1
Feb 05 03:38:20 4c4c4544-0052-5410-8043-b1c04f503232 kernel: type=1400 audit(1549337898.886:11): avc: denied { open } for pid=4257 comm="systemd-modules" path="/usr/lib/modules/3.10.0-957.1.3.el7.x86_64/kernel/fs/fuse/fuse.ko.xz" dev="dm-1" ino=2390271 scontext=system_u:system_r:initrc_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=1
Signed-off-by: Dave Sugar <[email protected]>
---
policy/modules/system/systemd.fc | 1 +
policy/modules/system/systemd.te | 15 +++++++++++++++
2 files changed, 16 insertions(+)
diff --git a/policy/modules/system/systemd.fc b/policy/modules/system/systemd.fc
index 22cfe4e6..3b0302b6 100644
--- a/policy/modules/system/systemd.fc
+++ b/policy/modules/system/systemd.fc
@@ -26,6 +26,7 @@
/usr/lib/systemd/systemd-localed -- gen_context(system_u:object_r:systemd_locale_exec_t,s0)
/usr/lib/systemd/systemd-logind -- gen_context(system_u:object_r:systemd_logind_exec_t,s0)
/usr/lib/systemd/systemd-machined -- gen_context(system_u:object_r:systemd_machined_exec_t,s0)
+/usr/lib/systemd/systemd-modules-load -- gen_context(system_u:object_r:systemd_modules_load_exec_t,s0)
/usr/lib/systemd/systemd-networkd -- gen_context(system_u:object_r:systemd_networkd_exec_t,s0)
/usr/lib/systemd/systemd-resolved -- gen_context(system_u:object_r:systemd_resolved_exec_t,s0)
/usr/lib/systemd/systemd-rfkill -- gen_context(system_u:object_r:systemd_rfkill_exec_t,s0)
diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te
index a6f09dfd..64e36c66 100644
--- a/policy/modules/system/systemd.te
+++ b/policy/modules/system/systemd.te
@@ -119,6 +119,10 @@ type systemd_machined_var_run_t;
files_pid_file(systemd_machined_var_run_t)
init_daemon_pid_file(systemd_machined_var_run_t, dir, "machines")
+type systemd_modules_load_t;
+type systemd_modules_load_exec_t;
+init_daemon_domain(systemd_modules_load_t, systemd_modules_load_exec_t)
+
type systemd_networkd_t;
type systemd_networkd_exec_t;
init_system_domain(systemd_networkd_t, systemd_networkd_exec_t)
@@ -606,6 +610,17 @@ optional_policy(`
dbus_system_bus_client(systemd_machined_t)
')
+########################################
+#
+# modules-load local policy
+#
+
+files_load_kernel_modules(systemd_modules_load_t)
+files_read_etc_files(systemd_modules_load_t)
+
+init_read_state(systemd_modules_load_t)
+init_search_run(systemd_modules_load_t)
+
########################################
#
# networkd local policy
--
2.20.1
On 2/7/19 4:15 PM, Sugar, David wrote:
> I'm seeing the following denials when attempting to get a DHCP address.
>
> type=AVC msg=audit(1549471325.440:199): avc: denied { name_bind } for pid=6964 comm="systemd-network" src=68 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:dhcpc_port_t:s0 tclass=udp_socket permissive=1
> type=AVC msg=audit(1549471325.440:199): avc: denied { node_bind } for pid=6964 comm="systemd-network" saddr=10.1.12.61 src=68 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=udp_socket permissive=1
> type=AVC msg=audit(1549471325.440:199): avc: denied { net_bind_service } for pid=6964 comm="systemd-network" capability=10 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:system_r:systemd_networkd_t:s0 tclass=capability permissive=1
> type=SYSCALL msg=audit(1549471325.440:199): arch=c000003e syscall=49 success=yes exit=0 a0=b a1=7fff09388780 a2=10 a3=7fff09388778 items=0 ppid=1 pid=6964 auid=4294967295 uid=192 gid=192 euid=192 suid=192 fsuid=192 egid=192 sgid=192 fsgid=192 tty=(none) ses=4294967295 comm="systemd-network" exe="/usr/lib/systemd/systemd-networkd" subj=system_u:system_r:systemd_networkd_t:s0 key=(null)
>
> Signed-off-by: Dave Sugar <[email protected]>
> ---
> policy/modules/system/systemd.te | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te
> index 64e36c66..cd88e621 100644
> --- a/policy/modules/system/systemd.te
> +++ b/policy/modules/system/systemd.te
> @@ -651,6 +651,8 @@ corecmd_bin_entry_type(systemd_networkd_t)
> corecmd_exec_bin(systemd_networkd_t)
>
> corenet_rw_tun_tap_dev(systemd_networkd_t)
> +corenet_udp_bind_dhcpc_port(systemd_networkd_t)
> +corenet_udp_bind_generic_node(systemd_networkd_t)
>
> dev_read_urand(systemd_networkd_t)
> dev_read_sysfs(systemd_networkd_t)
Merged.
--
Chris PeBenito
On 2/7/19 4:15 PM, Sugar, David wrote:
> systemd-modules-load is used to pre-load kernal modules as the system comes up.
> It was running initc_t which didn't have permissions to actually load kernel
> modules. This change sets up a new domain for this service and grants permission
> necessary to load kernel modules.
>
> Feb 05 03:38:20 4c4c4544-0052-5410-8043-b1c04f503232 kernel: type=1400 audit(1549337898.886:10): avc: denied { read } for pid=4257 comm="systemd-modules" name="fuse.ko.xz" dev="dm-1" ino=2390271 scontext=system_u:system_r:initrc_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=1
> Feb 05 03:38:20 4c4c4544-0052-5410-8043-b1c04f503232 kernel: type=1400 audit(1549337898.886:11): avc: denied { open } for pid=4257 comm="systemd-modules" path="/usr/lib/modules/3.10.0-957.1.3.el7.x86_64/kernel/fs/fuse/fuse.ko.xz" dev="dm-1" ino=2390271 scontext=system_u:system_r:initrc_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=1
>
> Signed-off-by: Dave Sugar <[email protected]>
> ---
> policy/modules/system/systemd.fc | 1 +
> policy/modules/system/systemd.te | 15 +++++++++++++++
> 2 files changed, 16 insertions(+)
>
> diff --git a/policy/modules/system/systemd.fc b/policy/modules/system/systemd.fc
> index 22cfe4e6..3b0302b6 100644
> --- a/policy/modules/system/systemd.fc
> +++ b/policy/modules/system/systemd.fc
> @@ -26,6 +26,7 @@
> /usr/lib/systemd/systemd-localed -- gen_context(system_u:object_r:systemd_locale_exec_t,s0)
> /usr/lib/systemd/systemd-logind -- gen_context(system_u:object_r:systemd_logind_exec_t,s0)
> /usr/lib/systemd/systemd-machined -- gen_context(system_u:object_r:systemd_machined_exec_t,s0)
> +/usr/lib/systemd/systemd-modules-load -- gen_context(system_u:object_r:systemd_modules_load_exec_t,s0)
> /usr/lib/systemd/systemd-networkd -- gen_context(system_u:object_r:systemd_networkd_exec_t,s0)
> /usr/lib/systemd/systemd-resolved -- gen_context(system_u:object_r:systemd_resolved_exec_t,s0)
> /usr/lib/systemd/systemd-rfkill -- gen_context(system_u:object_r:systemd_rfkill_exec_t,s0)
> diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te
> index a6f09dfd..64e36c66 100644
> --- a/policy/modules/system/systemd.te
> +++ b/policy/modules/system/systemd.te
> @@ -119,6 +119,10 @@ type systemd_machined_var_run_t;
> files_pid_file(systemd_machined_var_run_t)
> init_daemon_pid_file(systemd_machined_var_run_t, dir, "machines")
>
> +type systemd_modules_load_t;
> +type systemd_modules_load_exec_t;
> +init_daemon_domain(systemd_modules_load_t, systemd_modules_load_exec_t)
> +
> type systemd_networkd_t;
> type systemd_networkd_exec_t;
> init_system_domain(systemd_networkd_t, systemd_networkd_exec_t)
> @@ -606,6 +610,17 @@ optional_policy(`
> dbus_system_bus_client(systemd_machined_t)
> ')
>
> +########################################
> +#
> +# modules-load local policy
> +#
> +
> +files_load_kernel_modules(systemd_modules_load_t)
> +files_read_etc_files(systemd_modules_load_t)
> +
> +init_read_state(systemd_modules_load_t)
> +init_search_run(systemd_modules_load_t)
> +
> ########################################
> #
> # networkd local policy
Merged.
--
Chris PeBenito