LG Android 6.x must not display notifications when the device is locked.

From LG Android 6.x Security Technical Implementation Guide

Part of PP-MDF-201008

SV-81309r2_rule LG Android 6.x must not display notifications when the device is locked.

Vulnerability discussion

Many mobile devices display notifications on the lock screen so that users can obtain relevant information in a timely manner without having to frequently unlock the phone to determine if there are new notifications. However, in many cases, these notifications can contain sensitive information. When they are available on the lock screen, an adversary can see them merely by being in close physical proximity to the device. Configuring the mobile operating system to not send notifications to the lock screen mitigates this risk.SFR ID: FMT_SMF_EXT.1.1 #21

Check content

This validation procedure is performed on both the MDM Administration Console and the LG Android device. On the MDM console, do the following: 1. Ask the MDM administrator to display the "Allow Keyguard" setting in the MDM console. 2. Verify "All" or "Secure notifications" is selected in the "Keyguard Disabled" policy. 3. Verify the policy has been assigned to all groups. On the LG Android device: 1. Unlock the device. 2. Add a calendar event for the current day on the device. 3. Lock the device. 4. Verify no notifications are displayed on the locked screen of the LG Android device. If on the MDM console the "Keyguard Disabled" policy is not set to "All" or "Secure notifications" is not set on the LG Android device; a notification can be displayed on the locked screen, this is a finding.

Fix text

Configure the mobile operating system to not display notifications when the device is locked. On the MDM Administration Console, select "All" or "Secure notifications" in the Keyguard Disabled policy.

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