LG Android 6.x must protect data at rest on built-in storage media.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-66823	LGA6-20-101101	SV-81313r2_rule		High

Description
The mobile operating system must ensure the data being written to the mobile device's built-in storage media is protected from unauthorized access. If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can read storage media directly, thereby circumventing operating system controls. Encrypting the data ensures confidentiality is protected even when the operating system is not running. SFR ID: FMT_SMF_EXT.1.1 #25

Description

The mobile operating system must ensure the data being written to the mobile device's built-in storage media is protected from unauthorized access. If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can read storage media directly, thereby circumventing operating system controls. Encrypting the data ensures confidentiality is protected even when the operating system is not running. SFR ID: FMT_SMF_EXT.1.1 #25

STIG	Date
LG Android 6.x Security Technical Implementation Guide	2019-02-21

Details

Check Text ( C-67473r2_chk )
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 "Encryption" setting in the MDM console. 2. Verify "Device Encryption" is selected. 3. Verify the policy has been assigned to all groups. On the LG Android device: 1. Unlock the device. 2. Navigate to Settings >> General >> Security (or Fingerprints & security). 3. Verify "Encrypt phone" is enabled and cannot be disabled (grayed out). If on the MDM console "Device Encryption" is not enabled or if on the LG Android device "Encrypt phone" is not enabled and grayed out, this is a finding.

Check Text ( C-67473r2_chk )

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 "Encryption" setting in the MDM console.
2. Verify "Device Encryption" is selected.
3. Verify the policy has been assigned to all groups.

On the LG Android device:

1. Unlock the device.
2. Navigate to Settings >> General >> Security (or Fingerprints & security).
3. Verify "Encrypt phone" is enabled and cannot be disabled (grayed out).

If on the MDM console "Device Encryption" is not enabled or if on the LG Android device "Encrypt phone" is not enabled and grayed out, this is a finding.

Fix Text (F-72923r2_fix)
Configure the mobile operating system to enable data-at-rest protection for built-in storage media. On the MDM Administration Console, enable "Device Encryption" for on-device storage.