From 285b27c6919697b8a476d73d8d3eb142bd958dc4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?F=C3=A9lix=20Pi=C3=A9dallu?= Date: Sat, 23 Mar 2024 21:21:05 +0100 Subject: [PATCH] Add systemd service security sandboxing --- conf/systemd.service | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/conf/systemd.service b/conf/systemd.service index 4816ef4..8e6662d 100644 --- a/conf/systemd.service +++ b/conf/systemd.service @@ -16,5 +16,35 @@ PIDFile=/run/movim.pid Restart=on-failure RestartSec=10 +# Sandboxing options to harden security +# Depending on specificities of your service/app, you may need to tweak these +# .. but this should be a good baseline +# Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html +NoNewPrivileges=yes +PrivateTmp=yes +PrivateDevices=yes +RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 +RestrictNamespaces=yes +RestrictRealtime=yes +DevicePolicy=closed +ProtectSystem=full +ProtectControlGroups=yes +ProtectKernelModules=yes +ProtectKernelTunables=yes +LockPersonality=yes +SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap + +# Denying access to capabilities that should not be relevant for webapps +# Doc: https://man7.org/linux/man-pages/man7/capabilities.7.html +CapabilityBoundingSet=~CAP_RAWIO CAP_MKNOD +CapabilityBoundingSet=~CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_AUDIT_WRITE +CapabilityBoundingSet=~CAP_SYS_BOOT CAP_SYS_TIME CAP_SYS_MODULE CAP_SYS_PACCT +CapabilityBoundingSet=~CAP_LEASE CAP_LINUX_IMMUTABLE CAP_IPC_LOCK +CapabilityBoundingSet=~CAP_BLOCK_SUSPEND CAP_WAKE_ALARM +CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG +CapabilityBoundingSet=~CAP_MAC_ADMIN CAP_MAC_OVERRIDE +CapabilityBoundingSet=~CAP_NET_ADMIN CAP_NET_BROADCAST CAP_NET_RAW +CapabilityBoundingSet=~CAP_SYS_ADMIN CAP_SYS_PTRACE CAP_SYSLOG + [Install] WantedBy=multi-user.target