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The macOS system must restrict the ability of individuals to use USB storage devices.


Overview

Finding ID Version Rule ID IA Controls Severity
V-81663 AOSX-13-000850 SV-96377r1_rule Medium
Description
External hard drives, such as USB, must be disabled for users. USB hard drives are a potential vector for malware and can be used to exfiltrate sensitive data if an approved data-loss prevention (DLP) solution is not installed.
STIG Date
Apple OS X 10.13 Security Technical Implementation Guide 2019-03-08

Details

Check Text ( C-81439r1_chk )
If an approved HBSS DCM/DLP solution is installed, this is not applicable.

To verify external USB drives are disabled, run the following command:

/usr/sbin/system_profiler SPConfigurationProfileDataType | /usr/bin/grep -A 3 harddisk-external

If the result is not “harddisk-external" = (
eject,
alert
);”, this is a finding.
Fix Text (F-88511r1_fix)
This setting is enforced using the "Restrictions Policy" configuration profile.