LG Android 6.x must be configured to disable VPN split-tunneling.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-66845	LGA6-20-102901	SV-81335r2_rule		Medium

Description
Spilt-tunneling allows multiple simultaneous remote connections to the mobile device. Without VPN split-tunneling disabled, malicious applications can covertly off-load device data to a third-party server or set up a trusted tunnel between a non-DoD third-party server and a DoD network, providing a vector to attack the network. SFR ID: FMT_SMF_EXT.1.1 #45

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

Details

Check Text ( C-67495r2_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 "Allow VPN Split Tunneling" setting in the MDM console. 2. Verify the setting for the VPN Split Tunneling is disabled. 3. Verify the policy has been assigned to all groups. On the LG Android device: 1. Unlock the device. 2. Navigate to the VPN Split Tunneling setting: Settings >> Network >> VPN >> LG VPN >> Add LG VPN network >> Show advanced options popup. 3. Verify "Disable Split Tunneling" option is checked and cannot be changed (grayed out). If on the MDM console the "Allow VPN split tunneling" setting is enabled or the LG Android device the "Disable Split Tunneling" setting is not checked and can be changed, this is a finding.

Check Text ( C-67495r2_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 "Allow VPN Split Tunneling" setting in the MDM console.
2. Verify the setting for the VPN Split Tunneling is disabled.
3. Verify the policy has been assigned to all groups.

On the LG Android device:

1. Unlock the device.
2. Navigate to the VPN Split Tunneling setting:
Settings >> Network >> VPN >> LG VPN >> Add LG VPN network >> Show advanced options popup.
3. Verify "Disable Split Tunneling" option is checked and cannot be changed (grayed out).

If on the MDM console the "Allow VPN split tunneling" setting is enabled or the LG Android device the "Disable Split Tunneling" setting is not checked and can be changed, this is a finding.

Fix Text (F-72945r2_fix)
Configure the mobile operating system to disable VPN split-tunneling (if the MD provides a configurable control). On the MDM Administration Console, disable the "Allow VPN split tunneling" setting.