Google Android 15 must be configured to disable USB mass storage mode.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-267444	PP-MDF-333230	GOOG-15-008400	SV-267444r1031517_rule	2024-12-05	1

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. SFRID: FMT_SMF.1.1 #39

ℹ️ Check
Review managed Google Android 15 device configuration settings to determine if the mobile device has a USB mass storage mode and whether it has been disabled. This validation procedure is performed on both the EMM Administration Console and the managed Google Android 15 device. On the EMM console: COBO: 1. Open "User restrictions". 2. Open "Set user restrictions". 3. Verify that "Disallow USB file transfer" is toggled to "ON". COPE: 1. Open "User restrictions". 2. Open "Set user restrictions on parent". 3. Verify "Disallow USB file transfer" is toggled to "ON". ______________________________ On the managed Google Android 15 device: 1. Connect a USB cable to the managed Google Android 15 device and connect to a non-DOD network-managed PC. 2. Go to Settings >> Connected devices >> USB. 3. Verify "No data transfer" is selected. If the EMM console device policy is not set to disable USB mass storage mode or on the managed Google Android 15 device, the device policy is not set to disable USB mass storage mode, this is a finding.

ℹ️ Check

Review managed Google Android 15 device configuration settings to determine if the mobile device has a USB mass storage mode and whether it has been disabled. This validation procedure is performed on both the EMM Administration Console and the managed Google Android 15 device. On the EMM console: COBO: 1. Open "User restrictions". 2. Open "Set user restrictions". 3. Verify that "Disallow USB file transfer" is toggled to "ON". COPE: 1. Open "User restrictions". 2. Open "Set user restrictions on parent". 3. Verify "Disallow USB file transfer" is toggled to "ON". ______________________________ On the managed Google Android 15 device: 1. Connect a USB cable to the managed Google Android 15 device and connect to a non-DOD network-managed PC. 2. Go to Settings >> Connected devices >> USB. 3. Verify "No data transfer" is selected. If the EMM console device policy is not set to disable USB mass storage mode or on the managed Google Android 15 device, the device policy is not set to disable USB mass storage mode, this is a finding.

✔️ Fix
Configure the Google Android 15 device to disable USB mass storage mode. On the EMM console: COBO: 1. Open "User restrictions". 2. Open "Set user restrictions". 3. Toggle "Disallow USB file transfer" to "ON". COPE: 1. Open "User restrictions". 2. Open "Set user restrictions on parent". 3. Toggle "Disallow USB file transfer" to "ON".