LG Android 6.x must implement the management setting: Disable USB host storage.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-66873	LGA6-99-100003	SV-81363r2_rule		Medium

Description
The USB host storage feature allows the device to connect to select USB devices (e.g., USB flash drives, USB mouse, USB keyboard) using a micro USB to USB adapter cable. A user can copy sensitive DoD information to external USB storage unencrypted, resulting in compromise of DoD data. Disabling this feature mitigates the risk of compromising sensitive DoD data. SFR ID: FMT_SMF_EXT.1.1 #45

STIG	Date
LG Android 6.x Security Technical Implementation Guide	2019-02-21

Details

Check Text ( C-67509r2_chk )
This validation procedure is performed on both the MDM Administration Console and the LG Android device. On the MDM console, do the following: 1. Ask the MDM administrator to display the "USB host storage" setting in the "Android Restrictions" rule. 2. Verify the setting is disabled. 3. Verify the policy has been assigned to all groups. On the LG Android device: 1. Connect a USB OTG flash drive to the device. 2. Go to file manager. 3. Verify USB storage is not available. If on the MDM console the "USB host storage" configuration is enabled or on the LG Android device USB storage is available when a USB OTG flash drive is connected to the device, this is a finding.

Check Text ( C-67509r2_chk )

This validation procedure is performed on both the MDM Administration Console and the LG Android device.

On the MDM console, do the following:

1. Ask the MDM administrator to display the "USB host storage" setting in the "Android Restrictions" rule.
2. Verify the setting is disabled.
3. Verify the policy has been assigned to all groups.

On the LG Android device:

1. Connect a USB OTG flash drive to the device.
2. Go to file manager.
3. Verify USB storage is not available.

If on the MDM console the "USB host storage" configuration is enabled or on the LG Android device USB storage is available when a USB OTG flash drive is connected to the device, this is a finding.

Fix Text (F-72973r2_fix)
Configure the mobile operating system to disable USB host storage. On the MDM Administration Console, disable the "USB host storage" setting in the "Android Restrictions" rule.