39 lines
1.1 KiB
Diff
39 lines
1.1 KiB
Diff
From 4e027d3c019846e216c6f76496d71c89f063ed59 Mon Sep 17 00:00:00 2001
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From: Craig Andrews <candrews@integralblue.com>
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Date: Wed, 13 Sep 2017 15:23:09 +0200
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Subject: [PATCH 2/4] systemd: Add PrivateTmp and NoNewPrivileges options
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PrivateTmp makes bluetoothd's /tmp and /var/tmp be inside a different
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namespace. This is useful to secure access to temporary files of the
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process.
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NoNewPrivileges ensures that service process and all its children
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can never gain new privileges through execve(), lowering the risk of
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possible privilege escalations.
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---
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src/bluetooth.service.in | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/src/bluetooth.service.in b/src/bluetooth.service.in
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index f9faaa452..7c2f60bb4 100644
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--- a/src/bluetooth.service.in
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+++ b/src/bluetooth.service.in
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@@ -12,8 +12,14 @@ NotifyAccess=main
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#Restart=on-failure
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CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
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LimitNPROC=1
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+
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+# Filesystem lockdown
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ProtectHome=true
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ProtectSystem=full
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+PrivateTmp=true
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+
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+# Privilege escalation
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+NoNewPrivileges=true
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[Install]
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WantedBy=bluetooth.target
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--
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2.21.0
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