* [PATCH] Allow systemd-networkd to get IP address from dhcp server
@ 2019-02-07 21:15 Sugar, David
2019-02-07 21:15 ` [PATCH] Separate domain for systemd-modules-load Sugar, David
2019-02-09 14:07 ` [PATCH] Allow systemd-networkd to get IP address from dhcp server Chris PeBenito
0 siblings, 2 replies; 4+ messages in thread
From: Sugar, David @ 2019-02-07 21:15 UTC (permalink / raw)
To: selinux-refpolicy
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 <dsugar@tresys.com>
---
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
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH] Separate domain for systemd-modules-load 2019-02-07 21:15 [PATCH] Allow systemd-networkd to get IP address from dhcp server Sugar, David @ 2019-02-07 21:15 ` Sugar, David 2019-02-09 14:07 ` Chris PeBenito 2019-02-09 14:07 ` [PATCH] Allow systemd-networkd to get IP address from dhcp server Chris PeBenito 1 sibling, 1 reply; 4+ messages in thread From: Sugar, David @ 2019-02-07 21:15 UTC (permalink / raw) To: selinux-refpolicy 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 <dsugar@tresys.com> --- 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 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] Separate domain for systemd-modules-load 2019-02-07 21:15 ` [PATCH] Separate domain for systemd-modules-load Sugar, David @ 2019-02-09 14:07 ` Chris PeBenito 0 siblings, 0 replies; 4+ messages in thread From: Chris PeBenito @ 2019-02-09 14:07 UTC (permalink / raw) To: Sugar, David, selinux-refpolicy 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 <dsugar@tresys.com> > --- > 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 ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] Allow systemd-networkd to get IP address from dhcp server 2019-02-07 21:15 [PATCH] Allow systemd-networkd to get IP address from dhcp server Sugar, David 2019-02-07 21:15 ` [PATCH] Separate domain for systemd-modules-load Sugar, David @ 2019-02-09 14:07 ` Chris PeBenito 1 sibling, 0 replies; 4+ messages in thread From: Chris PeBenito @ 2019-02-09 14:07 UTC (permalink / raw) To: Sugar, David, selinux-refpolicy 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 <dsugar@tresys.com> > --- > 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 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-02-09 14:07 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2019-02-07 21:15 [PATCH] Allow systemd-networkd to get IP address from dhcp server Sugar, David 2019-02-07 21:15 ` [PATCH] Separate domain for systemd-modules-load Sugar, David 2019-02-09 14:07 ` Chris PeBenito 2019-02-09 14:07 ` [PATCH] Allow systemd-networkd to get IP address from dhcp server Chris PeBenito
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