Samsung Android must be configured to disable USB mass storage mode.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-92893	KNOX-09-000680	SV-102981r1_rule		Medium

Description
USB mass storage mode enables the transfer of data and software from one device to another. This software can include malware. When USB mass storage is enabled on a mobile device, it becomes a potential vector for malware and unauthorized data exfiltration. Prohibiting USB mass storage mode mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #39a

STIG	Date
Samsung OS 9 with Knox 3.x COBO Use Case KPE(AE) Deployment Security Technical Implementation Guide	2020-02-24

Details

Check Text ( C-92201r1_chk )
Review device configuration settings to confirm that USB file transfer has been disallowed. This procedure is performed on both the MDM Administration console and the Samsung Android device. On the MDM console, for the device, in the "Android user restrictions" group, verify that "disallow usb file transfer" is selected. Connect the Samsung Android device to a non-DoD network-managed PC with a USB cable. On the PC, browse the mounted Samsung Android device and verify that it does not display any folders or files. If on the MDM console "disallow USB file transfer" is not selected, or the PC can mount and browse folders and files on the Samsung Android device, this is a finding.

Check Text ( C-92201r1_chk )

Review device configuration settings to confirm that USB file transfer has been disallowed.

This procedure is performed on both the MDM Administration console and the Samsung Android device.

On the MDM console, for the device, in the "Android user restrictions" group, verify that "disallow usb file transfer" is selected.

Connect the Samsung Android device to a non-DoD network-managed PC with a USB cable.

On the PC, browse the mounted Samsung Android device and verify that it does not display any folders or files.

If on the MDM console "disallow USB file transfer" is not selected, or the PC can mount and browse folders and files on the Samsung Android device, this is a finding.

Fix Text (F-99139r1_fix)
Configure Samsung Android to disallow USB file transfer. On the MDM console, for the device, in the "Android user restrictions" group, select "disallow USB file transfer".