Apple iOS must implement the management setting: not share location data through iCloud.

From Apple iOS 11 Security Technical Implementation Guide

Associated with: CCI-000366

SV-93137r1_rule Apple iOS must implement the management setting: not share location data through iCloud.

Vulnerability discussion

Sharing of location data is an operations security (OPSEC) risk because it potentially allows an adversary to determine a DoD user's location and movements and patterns in those movements over time. An adversary could use this information to target the user or to gather intelligence on the user's likely activities. Using commercial cloud services to store and handle location data could leave the data vulnerable to breach, particularly by sophisticated adversaries. Disabling the use of such services mitigates this risk.SFR ID: FMT_SMF_EXT.1.1 #47

Check content

Review configuration settings to confirm "Share My Location" is disabled. Note that this is a User based Enforcement (UBE) control, which cannot be managed by an MDM server. This check procedure is performed on the Apple iOS device only. On the Apple iOS device: 1. Open the Settings app. 2. Tap "Privacy". 3. Tap "Location Services". 4. Tap "Share My Location". 5. Verify "Share My Location" is off. If "Share My Location" is toggled to the right and appears green on the Apple iOS device, this is a finding.

Fix text

The user must configure Apple iOS to disable location sharing through iCloud.

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