From Samsung Android OS 5 with Knox 2.0 Security Technical Implementation Guide
Part of PP-MDF-201016
Associated with: CCI-000381
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.
This validation procedure is performed on both the MDM Administration Console and the PC. Check whether the appropriate setting is configured on the MDM Administration Console: 1. Ask the MDM administrator to display the "Disable USB Media Player" check box in the "Android Restrictions" rule. 2. Verify the "Disable USB Media Player" check box is selected. Note: Disabling USB Media Player will also disable USB MTP, USB mass storage, USB vendor protocol (KIES). On the Samsung Knox for Android device: 1. Connect the device to a PC USB connection. Note: Do not use a DoD network-managed PC for this test! On the PC: 1. Verify the device is not shown in the PC finder. If the specified setting is not set to the appropriate value, or if the device is shown in the PC finder, this is a finding.
Configure the MOS to disable USB mass storage mode. On the MDM Administration Console, select the "Disable USB Media Player" check box in the "Android Restrictions" rule.
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