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Update systemd.service to improve sandboxing.

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lapineige 2023-05-26 15:29:36 +02:00 • committed by GitHub
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commit f2a3b02181
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1 changed files with 38 additions and 12 deletions
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conf/systemd.service
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@ -22,19 +22,45 @@ WorkingDirectory=__FINALPATH__/live/
ExecStart=__FINALPATH__/live/bin/pleroma start
ExecStop=__FINALPATH__/live/bin/pleroma stop
; Some security directives.
; Use private /tmp and /var/tmp folders inside a new file system namespace, which are discarded after the process stops.
PrivateTmp=true
; The /home, /root, and /run/user folders can not be accessed by this service anymore. If your Pleroma user has its home folder in one of the restricted places, or use one of these folders as its working directory, you have to set this to false.
ProtectHome=false
; Mount /usr, /boot, and /etc as read-only for processes invoked by this service.
ProtectSystem=full
; Sets up a new /dev mount for the process and only adds API pseudo devices like /dev/null, /dev/zero or /dev/random but not physical devices. Disabled by default because it may not work on devices like the Raspberry Pi.
PrivateDevices=false
# 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
; Ensures that the service process and all its children can never gain new privileges through execve().
NoNewPrivileges=true
; Drops the sysadmin capability from the daemon.
CapabilityBoundingSet=~CAP_SYS_ADMIN
NoNewPrivileges=yes
# Use private /tmp and /var/tmp folders inside a new file system namespace, which are discarded after the process stops.
PrivateTmp=yes
# Sets up a new /dev mount for the process and only adds API pseudo devices like /dev/null, /dev/zero or /dev/random but not physical devices. Disabled by default because it may not work on devices like the Raspberry Pi.
PrivateDevices=yes
RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
RestrictNamespaces=yes
RestrictRealtime=yes
DevicePolicy=closed
ProtectClock=yes
ProtectHostname=yes
ProtectProc=invisible
# Mount /usr, /boot, and /etc as read-only for processes invoked by this service.
ProtectSystem=full
# The /home, /root, and /run/user folders can not be accessed by this service anymore. If your Akkoma user has its home folder in one of the restricted places, or use one of these folders as its working directory, you have to set this to false.
ProtectHome=false
ProtectControlGroups=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes
LockPersonality=yes
SystemCallArchitectures=native
SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap @cpu-emulation @privileged
# 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