Title

Google Android 10 must be configured to enable a screen-lock policy that will lock the display after a period of inactivity. (Cat II impact)

Discussion

The screen-lock timeout helps protect the device from unauthorized access. Devices without a screen-lock timeout provide an 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 and possibly access to DoD networks. SFR ID: FMT_SMF_EXT.1.1 #2a

Check Content

Review 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 inactivity. This validation procedure is performed on both the MDM Administration Console and the Android 10 device. On the MDM console, do the following: 1. Open password requirements. 2. Open device password section. 3. Ensure "Max time to screen lock" is set to any number desired. Units are in Seconds. On the Android 10 device, do the following: 1. Open Settings >> Display. 2. Tap "Screen timeout". 3. Ensure the Screen timeout value is set to the desired value and cannot be set to a larger value. If the MDM console device policy is not set to enable a screen-lock policy that will lock the display after a period of inactivity or on the Android 10 device, the device policy is not set to enable a screen-lock policy that will lock the display after a period of inactivity, this is a finding.

Fix Text

Configure the Google Android device to enable a screen-lock policy that will lock the display after a period of inactivity. On the MDM Console: 1. Open password requirements. 2. Open device password section. 3. Set "Max time to screen lock" to any number desired. Units are in Seconds.

Additional Identifiers

Rule ID: SV-237002r639152_rule

Vulnerability ID: V-237002

Group Title: PP-MDF-301030

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.