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system_settings_bluetooth_sharing_disable Disable Bluetooth Sharing

NIST macOS Security Compliance Project Sequoia Guidance, Revision 4.0 (be5491f)
All changes in this version
first version loaded System Settings

Title

Disable Bluetooth Sharing

Control

/usr/bin/sudo -u "$CURRENT_USER" /usr/bin/defaults -currentHost read com.apple.Bluetooth PrefKeyServicesEnabled

Discussion

Bluetooth Sharing _MUST_ be disabled.

Bluetooth Sharing allows users to wirelessly transmit files between the macOS and Bluetooth-enabled devices, including personally owned cellphones and tablets. A malicious user might introduce viruses or malware onto the system or extract sensitive files via Bluetooth Sharing. When Bluetooth Sharing is disabled, this risk is mitigated.

[NOTE]
====
The check and fix are for the last logged in user. To get the last logged in user, run the following.
[source,bash]
----
CURRENT_USER=$( /usr/bin/defaults read /Library/Preferences/com.apple.loginwindow lastUserName )
----
====

Related controls

ac-18.4, ac-3, cm-7, cm-7.1

Fix

[source,bash]
----
/usr/bin/sudo -u "$CURRENT_USER" /usr/bin/defaults -currentHost write com.apple.Bluetooth PrefKeyServicesEnabled -bool false
----