mirror of
https://github.com/strukturag/nextcloud-spreed-signaling.git
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15a9bea122
With this patch the systemd service will now run in a hardened sandbox that limits the kinds of subsystems available to the unit. This improves the overall security of the system, as nextcloud-spreed-signaling becomes almost pointless to exploit. The most notable changes include: - The entire fie system is mounted read-only with ProtectSystem=strict - No binaries are executable, apart from /usr/bin/signaling, with NoExecPaths=/ and ExecPaths=/usr/bin/signaling - The service cannot see any user on the system apart from the one that is running the process, with PrivateUsers=yes - Most of the /proc subsystem is inaccessible, and things like system stats may be unavailabe, with ProcSubset=pid - All home directories are inaccessible, with ProtectHome=yes - The kinds of permitted system calls are limited, via SystemCallFilter= I highly recommend you to read the systemd.exec(5) manual page to fully understand what these options do and how they can protect the system. https://www.freedesktop.org/software/systemd/man/systemd.exec.html
43 lines
978 B
Desktop File
43 lines
978 B
Desktop File
[Unit]
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Description=Nextcloud Talk signaling server
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[Service]
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ExecStart=/usr/bin/signaling --config /etc/signaling/server.conf
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User=signaling
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Group=signaling
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Restart=on-failure
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# Makes sure that /etc/signaling is owned by this service
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ConfigurationDirectory=signaling
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# Hardening - see systemd.exec(5)
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CapabilityBoundingSet=
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ExecPaths=/usr/bin/signaling /usr/lib
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LockPersonality=yes
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MemoryDenyWriteExecute=yes
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NoExecPaths=/
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NoNewPrivileges=yes
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PrivateDevices=yes
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PrivateTmp=yes
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PrivateUsers=yes
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ProcSubset=pid
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ProtectClock=yes
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ProtectControlGroups=yes
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ProtectHome=yes
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ProtectHostname=yes
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ProtectKernelLogs=yes
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ProtectKernelModules=yes
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ProtectKernelTunables=yes
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ProtectProc=invisible
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ProtectSystem=strict
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RemoveIPC=yes
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RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
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RestrictNamespaces=yes
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RestrictRealtime=yes
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RestrictSUIDSGID=yes
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SystemCallArchitectures=native
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SystemCallFilter=@system-service
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SystemCallFilter=~ @privileged @resources
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[Install]
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WantedBy=multi-user.target
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