Google Android Pie must be configured to enforce that Wi-Fi Sharing is disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-97347	GOOG-09-008800	SV-106451r1_rule		Medium

Description
Wi-Fi Sharing is an optional configuration of Wi-Fi Tethering/Mobile Hotspot, which allows the device to share its Wi-Fi connection with other wirelessly connected devices instead of its mobile (cellular) connection. Wi-Fi Sharing grants the "other" device access to a corporate Wi-Fi network and may possibly bypass the network access control mechanisms. This risk can be partially mitigated by requiring the use of a preshared key for personal hotspots. SFR ID: FMT_SMF_EXT.1.1 #47

Description

Wi-Fi Sharing is an optional configuration of Wi-Fi Tethering/Mobile Hotspot, which allows the device to share its Wi-Fi connection with other wirelessly connected devices instead of its mobile (cellular) connection. Wi-Fi Sharing grants the "other" device access to a corporate Wi-Fi network and may possibly bypass the network access control mechanisms. This risk can be partially mitigated by requiring the use of a preshared key for personal hotspots. SFR ID: FMT_SMF_EXT.1.1 #47

STIG	Date
Google Android 9.x Security Technical Implementation Guide	2019-08-28

Details

Check Text ( C-96183r1_chk )
Review device configuration settings to confirm Wi-Fi Sharing is disabled. Mobile Hotspot must be enabled in order to enable Wi-Fi Sharing. If the Authorizing Official (AO) has not approved Mobile Hotspot, and it has been verified as disabled on the MDM console, no further action is needed. If Mobile Hotspot is being used, use the following procedure to verify Wi-Fi Sharing is disabled: On the MDM console: 1. Open the User restrictions setting. 2. Verify "Disallow config tethering" to on. On the Google Android Pie device, do the following: 1. Open Settings. 2. Tap "Networks & internet". 3. Verify that "Hotspots & tethering" is disabled. If on the Google Android Pie device "Wi-Fi sharing" is enabled, this is a finding.

Check Text ( C-96183r1_chk )

Review device configuration settings to confirm Wi-Fi Sharing is disabled.

Mobile Hotspot must be enabled in order to enable Wi-Fi Sharing. If the Authorizing Official (AO) has not approved Mobile Hotspot, and it has been verified as disabled on the MDM console, no further action is needed. If Mobile Hotspot is being used, use the following procedure to verify Wi-Fi Sharing is disabled:

On the MDM console:
1. Open the User restrictions setting.
2. Verify "Disallow config tethering" to on.

On the Google Android Pie device, do the following:
1. Open Settings.
2. Tap "Networks & internet".
3. Verify that "Hotspots & tethering" is disabled.

If on the Google Android Pie device "Wi-Fi sharing" is enabled, this is a finding.

Fix Text (F-103027r1_fix)
Configure Google Android Pie to disable Wi-Fi Sharing. Mobile Hotspot must be enabled in order to enable Wi-Fi Sharing. If the AO has not approved Mobile Hotspot, and it has been disabled on the MDM console, no further action is needed. If Mobile Hotspot is being used, use the following procedure to disable Wi-Fi Sharing: On the MDM console: 1. Open the User restrictions setting. 2. Set "Disallow config tethering" to on.

Fix Text (F-103027r1_fix)

Configure Google Android Pie to disable Wi-Fi Sharing.

Mobile Hotspot must be enabled in order to enable Wi-Fi Sharing. If the AO has not approved Mobile Hotspot, and it has been disabled on the MDM console, no further action is needed. If Mobile Hotspot is being used, use the following procedure to disable Wi-Fi Sharing:

On the MDM console:
1. Open the User restrictions setting.
2. Set "Disallow config tethering" to on.