Merge pull request #106 from YunoHost-Apps/systemd-hardening

Update systemd.service

README.md

@@ -34,7 +34,6 @@ CryptPad is a collaboration suite that is end-to-end-encrypted and open-source.
 ## Documentation and resources
 
 * Official app website: https://cryptpad.fr/
-* Official user documentation: https://yunohost.org/apps
 * Official admin documentation: https://docs.cryptpad.fr/en/
 * Upstream app code repository: https://github.com/xwiki-labs/cryptpad
 * YunoHost documentation for this app: https://yunohost.org/app_cryptpad

README_fr.md

@@ -30,7 +30,6 @@ Comment configurer cette application : via le panneau d'administration ainsi que
 ## Documentations et ressources
 
 * Site officiel de l'app : https://cryptpad.fr/
-* Documentation officielle utilisateur : https://yunohost.org/apps
 * Documentation officielle de l'admin : https://docs.cryptpad.fr/en/
 * Dépôt de code officiel de l'app : https://github.com/xwiki-labs/cryptpad
 * Documentation YunoHost pour cette app : https://yunohost.org/app_cryptpad

conf/systemd.service

@@ -12,11 +12,36 @@ Environment=NODE_ENV=production
 ExecStart=__YNH_NPM__ start
 Restart=always
 
-PrivateDevices=true
+# Sandboxing options to harden security
-ProtectControlGroups=true
+# Depending on specificities of your service/app, you may need to tweak these 
-ProtectHome=true
+# .. but this should be a good baseline
-ProtectKernelTunables=true
+# 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

manifest.json

@@ -13,7 +13,6 @@
         "website": "https://cryptpad.fr/",
         "demo": "https://cryptpad.fr/",
         "admindoc": "https://docs.cryptpad.fr/en/",
-        "userdoc": "https://yunohost.org/apps",
         "code": "https://github.com/xwiki-labs/cryptpad"
     },
     "license": "AGPL-3.0-only",