Title

LG Android 6.x must implement the management setting: Disable USB host storage. (Cat II impact)

Discussion

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

Check Content

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

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.

Additional Identifiers

Rule ID: SV-81363r2_rule

Vulnerability ID: V-66873

Group Title:

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.