AIOS-15-012200 - Apple iOS/iPadOS 15 must implement the management setting: enable USB Restricted Mode.

Information

The USB lightning port on an iOS device can be used to access data on the device. The required settings ensure the Apple device password is entered before a previously trusted USB accessory can connect to the device.

SFR ID: FMT_SMF_EXT.1.1 #47

NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.

Solution

Install a configuration profile to configure 'Allow USB Restricted Mode' to 'True' in the management tool. This a supervised-only control.

Note: The default configuration setting for 'Allow USB Restricted Mode' is 'True' in most MDM products. This is the required setting. When set correctly, there will not be anything listed in the Restrictions profile and the user will be able to toggle USB accessories on/off.

Note: This control is called 'Allow USB accessories while device is locked' in Apple Configurator, and the control logic is opposite to what is listed here. Ensure the MDM policy rule is set correctly (to disable USB accessory connections when the device is locked).

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Apple_iOS-iPadOS_15_V1R4_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-250964r836935_rule, STIG-ID|AIOS-15-012200, Vuln-ID|V-250964

Plugin: MDM

Control ID: be74ff3b60d53e2e0c672f7f692c08263019d27e9b5d6093f0df2e7f7ceabd4a