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


Finding ID Version Rule ID IA Controls Severity
V-93893 KNOX-09-000685 SV-103979r1_rule Medium
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
Samsung Android OS 9 with Knox 3.x COPE Use Case KPE(Legacy) Deployment Security Technical Implementation Guide 2019-10-01


Check Text ( C-93211r1_chk )
Review device configuration settings to confirm that USB mass storage mode has been disabled.

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

On the MDM console, for the device, in the "Knox restrictions" group, verify that "disable USB media player" 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 "disable USB media player" 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-100141r1_fix)
Configure Samsung Android to disable USB mass storage mode.

On the MDM console, for the device, in the "Knox restrictions" group, select "disable USB media player".