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authorLennart Poettering <lennart@poettering.net>2016-08-26 13:23:27 +0200
committerDjalal Harouni <tixxdz@opendz.org>2016-09-25 10:52:57 +0200
commit0c28d51ac84973904e5f780b024adf8108e69fa1 (patch)
tree733e50f1bc45a47c4a3123abcab41ea4cfe50ab1 /units/systemd-timesyncd.service.in
parentf6eb19a474fdee780d5f2a4b62b5a55e6cbef4de (diff)
units: further lock down our long-running services
Let's make this an excercise in dogfooding: let's turn on more security features for all our long-running services. Specifically: - Turn on RestrictRealtime=yes for all of them - Turn on ProtectKernelTunables=yes and ProtectControlGroups=yes for most of them - Turn on RestrictAddressFamilies= for all of them, but different sets of address families for each Also, always order settings in the unit files, that the various sandboxing features are close together. Add a couple of missing, older settings for a numbre of unit files. Note that this change turns off AF_INET/AF_INET6 from udevd, thus effectively turning of networking from udev rule commands. Since this might break stuff (that is already broken I'd argue) this is documented in NEWS.
Diffstat (limited to 'units/systemd-timesyncd.service.in')
-rw-r--r--units/systemd-timesyncd.service.in6
1 files changed, 5 insertions, 1 deletions
diff --git a/units/systemd-timesyncd.service.in b/units/systemd-timesyncd.service.in
index df1e339196..9a6c6ea60d 100644
--- a/units/systemd-timesyncd.service.in
+++ b/units/systemd-timesyncd.service.in
@@ -22,13 +22,17 @@ Type=notify
Restart=always
RestartSec=0
ExecStart=@rootlibexecdir@/systemd-timesyncd
+WatchdogSec=3min
CapabilityBoundingSet=CAP_SYS_TIME CAP_SETUID CAP_SETGID CAP_SETPCAP CAP_CHOWN CAP_DAC_OVERRIDE CAP_FOWNER
PrivateTmp=yes
PrivateDevices=yes
ProtectSystem=full
ProtectHome=yes
-WatchdogSec=3min
+ProtectControlGroups=yes
+ProtectKernelTunables=yes
MemoryDenyWriteExecute=yes
+RestrictRealtime=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
SystemCallFilter=~@cpu-emulation @debug @keyring @module @mount @obsolete @raw-io
[Install]