From 98826d0717fe831265256f996c9e90d15262bef1 Mon Sep 17 00:00:00 2001 From: Gopal Tiwari Date: Mon, 8 Jun 2020 19:54:24 +0530 Subject: [PATCH BlueZ 2/4] systemd: Add PrivateTmp and NoNewPrivileges options From 4570164f0c90603bd07eb9e7c07e17bbafb5b5da Mon Sep 17 00:00:00 2001 From: Craig Andrews Date: Wed, 13 Sep 2017 15:23:09 +0200 systemd: Add PrivateTmp and NoNewPrivileges options PrivateTmp makes bluetoothd's /tmp and /var/tmp be inside a different namespace. This is useful to secure access to temporary files of the process. NoNewPrivileges ensures that service process and all its children can never gain new privileges through execve(), lowering the risk of possible privilege escalations. --- src/bluetooth.service.in | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/bluetooth.service.in b/src/bluetooth.service.in index f9faaa452..7c2f60bb4 100644 --- a/src/bluetooth.service.in +++ b/src/bluetooth.service.in @@ -12,8 +12,14 @@ NotifyAccess=main #Restart=on-failure CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE LimitNPROC=1 + +# Filesystem lockdown ProtectHome=true ProtectSystem=full +PrivateTmp=true + +# Privilege escalation +NoNewPrivileges=true [Install] WantedBy=bluetooth.target -- 2.21.1