Google Android 13 must be configured to lock the display after 15 minutes (or less) of inactivity.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258478	GOOG-13-706300	SV-258478r929472_rule		Medium

Description
The screen lock timeout must be set to a value that helps protect the device from unauthorized access. Having a too-long timeout would increase the window of opportunity for adversaries who gain physical access to the mobile device through loss, theft, etc. Such devices are much more likely to be in an unlocked state when acquired by an adversary, thus granting immediate access to the data on the mobile device. The maximum timeout period of 15 minutes has been selected to balance functionality and security; shorter timeout periods may be appropriate depending on the risks posed to the mobile device. SFR ID: FMT_SMF_EXT.1.1 #2b

Description

The screen lock timeout must be set to a value that helps protect the device from unauthorized access. Having a too-long timeout would increase the window of opportunity for adversaries who gain physical access to the mobile device through loss, theft, etc. Such devices are much more likely to be in an unlocked state when acquired by an adversary, thus granting immediate access to the data on the mobile device. The maximum timeout period of 15 minutes has been selected to balance functionality and security; shorter timeout periods may be appropriate depending on the risks posed to the mobile device. SFR ID: FMT_SMF_EXT.1.1 #2b

STIG	Date
Google Android 13 BYOAD Security Technical Implementation Guide	2024-02-06

Details

Check Text ( C-62218r929470_chk )
Review managed Google Android device configuration settings to determine if the mobile device is enforcing a screen-lock policy that will lock the display after a period of 15 minutes or less of inactivity. Note: Google Android 13 does not support the 15-minute increment. The available allowable selection is 10 minutes, then increases to 30 minutes. Therefore, the control should be set to 10 minutes. This validation procedure is performed on both the EMM Administration Console and the Android 13 device. On the EMM console: 1. Open "Lock screen restrictions". 2. Verify that "Max time to screen lock" is set to "600". Note: The units are in seconds. On the managed Google Android 13 device: 1. Open Settings >> Display. 2. Tap "Screen timeout". 3. Ensure the Screen timeout value is set to "600" seconds or less. If the EMM console device policy is not set to enable a screen-lock policy that will lock the display after a period of inactivity of 600 seconds or less, this is a finding.

Check Text ( C-62218r929470_chk )

Review managed Google Android device configuration settings to determine if the mobile device is enforcing a screen-lock policy that will lock the display after a period of 15 minutes or less of inactivity.

Note: Google Android 13 does not support the 15-minute increment. The available allowable selection is 10 minutes, then increases to 30 minutes. Therefore, the control should be set to 10 minutes.

This validation procedure is performed on both the EMM Administration Console and the Android 13 device.

On the EMM console:

1. Open "Lock screen restrictions".
2. Verify that "Max time to screen lock" is set to "600".
Note: The units are in seconds.

On the managed Google Android 13 device:

1. Open Settings >> Display.
2. Tap "Screen timeout".
3. Ensure the Screen timeout value is set to "600" seconds or less.

If the EMM console device policy is not set to enable a screen-lock policy that will lock the display after a period of inactivity of 600 seconds or less, this is a finding.

Fix Text (F-62127r929471_fix)
Configure the Google Android 13 device to enable a screen-lock policy of 15 minutes for the max period of inactivity. Note: Google Android 13 does not support the 15 minute increment. The available allowable selection is 10 minutes, then increases to 30 minutes. Therefore, the control will be set to 10 minutes. On the EMM console: 1. Open "Lock screen restrictions". 2. Set "Max time to screen lock" to "600". Note: The units are in seconds.

Fix Text (F-62127r929471_fix)

Configure the Google Android 13 device to enable a screen-lock policy of 15 minutes for the max period of inactivity.

Note: Google Android 13 does not support the 15 minute increment. The available allowable selection is 10 minutes, then increases to 30 minutes. Therefore, the control will be set to 10 minutes.

On the EMM console:

1. Open "Lock screen restrictions".
2. Set "Max time to screen lock" to "600".
Note: The units are in seconds.