The LG Android 5.0 platform must disable split-tunneling on the VPN client.

From LG Android 5.x Interim Security Configuration Guide

SV-73251r1_rule The LG Android 5.0 platform must disable split-tunneling on the VPN client.

Vulnerability discussion

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: FPT_BBD_EXT.1.1

Check content

This validation procedure is performed on both the MDM Administration Console and the LG Android device. Check whether the appropriate setting is configured on the MDM Administration Console: 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. On the LG Android device: 1. Unlock the device. 2. Open the device settings. 3. Navigate to the VPN Split Tunneling setting: Settings >> Tethering & Networks (or Wireless & Networks) >> VPN >> LG VPN >> add LG VPN network >> select "Show advanced options" popup >> "Disable Split Tunneling". Verify it is checked. If the "Allow VPN split tunneling" setting is enabled, or if the user is able to change the "Disable Split Tunneling" setting on the device, this is a finding.

Fix text

Configure the mobile device to disable VPN split tunneling. On the MDM Administration Console, disable the "Allow VPN split tunneling" setting.

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