From 7a0c6cdd396521b2d0207bd97bf7b119fbd8e3ea Mon Sep 17 00:00:00 2001
From: erdnaxe <erdnaxe@users.noreply.github.com>
Date: Sun, 8 Aug 2021 13:58:30 +0200
Subject: [PATCH] nixos/miniflux: systemd unit hardening (#133123)

---
 nixos/modules/services/web-apps/miniflux.nix | 23 ++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/nixos/modules/services/web-apps/miniflux.nix b/nixos/modules/services/web-apps/miniflux.nix
index 01710b1bd59c..1bbadafa2078 100644
--- a/nixos/modules/services/web-apps/miniflux.nix
+++ b/nixos/modules/services/web-apps/miniflux.nix
@@ -98,6 +98,29 @@ in
         EnvironmentFile = if cfg.adminCredentialsFile == null
         then defaultCredentials
         else cfg.adminCredentialsFile;
+        # Hardening
+        CapabilityBoundingSet = [ "" ];
+        DeviceAllow = [ "" ];
+        LockPersonality = true;
+        MemoryDenyWriteExecute = true;
+        PrivateDevices = true;
+        PrivateUsers = true;
+        ProcSubset = "pid";
+        ProtectClock = true;
+        ProtectControlGroups = true;
+        ProtectHome = true;
+        ProtectHostname = true;
+        ProtectKernelLogs = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        ProtectProc = "invisible";
+        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
+        RestrictNamespaces = true;
+        RestrictRealtime = true;
+        RestrictSUIDSGID = true;
+        SystemCallArchitectures = "native";
+        SystemCallFilter = [ "@system-service" "~@privileged" "~@resources" ];
+        UMask = "0077";
       };
 
       environment = cfg.config;