From e0211677b94a70274a7527489ea4f09618b306b3 Mon Sep 17 00:00:00 2001
From: ericgaspar <junk.eg@free.fr>
Date: Fri, 20 Aug 2021 09:31:11 +0200
Subject: [PATCH] Update systemd.service

---
 conf/systemd.service | 36 ++++++++++++++++++++++++++++++++----
 1 file changed, 32 insertions(+), 4 deletions(-)

diff --git a/conf/systemd.service b/conf/systemd.service
index 1a0ee2b..8f38aa5 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -1,9 +1,7 @@
 [Unit]
 Description=Vikunja: To-Do list
-After=syslog.target
-After=network.target
-Requires=postgresql.service
-Requires=redis.service
+After=network.target syslog.target
+Requires=postgresql.service redis.service
 
 [Service]
 Type=simple
@@ -14,5 +12,35 @@ ExecStart=/opt/vikunja/vikunja
 RestartSec=2s
 Restart=always
 
+# 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