Apple iOS/iPadOS must not allow backup to remote systems (iCloud Photo Sharing, also known as Shared Photo Streams).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-97451	AIOS-13-004500	SV-106555r1_rule		Medium

Description
When "Allow iCloud Photos" is enabled, sensitive photos will be uploaded automatically to Apple-specified servers and available on the iPhone and iPads of other users who have accepted invitations to participate in iCloud Photo Sharing. This potentially places sensitive photos on a server outside of DoD's control, potentially granting availability to non-DoD users and devices. Disabling iCloud Photo Sharing mitigates this risk. Note: If the AO has approved the use/storage of DoD data in one or more personal (unmanaged) apps, allowing unrestricted activity by the user in downloading and installing personal (unmanaged) apps on the iOS 11 device may not be warranted due to the risk of possible loss of or unauthorized access to DoD data. SFR ID: FMT_MOF_EXT.1.2 #40

Description

When "Allow iCloud Photos" is enabled, sensitive photos will be uploaded automatically to Apple-specified servers and available on the iPhone and iPads of other users who have accepted invitations to participate in iCloud Photo Sharing. This potentially places sensitive photos on a server outside of DoD's control, potentially granting availability to non-DoD users and devices. Disabling iCloud Photo Sharing mitigates this risk. Note: If the AO has approved the use/storage of DoD data in one or more personal (unmanaged) apps, allowing unrestricted activity by the user in downloading and installing personal (unmanaged) apps on the iOS 11 device may not be warranted due to the risk of possible loss of or unauthorized access to DoD data. SFR ID: FMT_MOF_EXT.1.2 #40

STIG	Date
Apple iOS/iPadOS 13 Security Technical Implementation Guide	2019-09-23

Details

Check Text ( C-96287r1_chk )
Note: This requirement is Not Applicable if the AO has approved users' full access to the Apple App Store for downloading unmanaged (personal) apps and syncing personal data on the device with personal cloud data storage accounts (see Section 2.9 of the STIG Supplemental document for more details). The site must have an AO-signed document showing the AO has assumed the risk for users' full access to the Apple App Store. Review configuration settings to confirm "Allow iCloud Photos" is disabled. This check procedure is performed on both the Apple iOS/iPadOS management tool and the iPhone and iPad. Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review. In the Apple iOS/iPadOS management tool, verify "Allow iCloud Photos" is unchecked. Alternatively, verify the text "allowSharedStream" appears in the configuration profile (.mobileconfig file). On the iPhone and iPad: 1. Open the Settings app. 2. Tap "General". 3. Tap "Profiles" or "Profiles & Device Management" or "Device Management". 4. Tap the Configuration Profile from the Apple iOS/iPadOS management tool containing the restrictions policy. 5. Tap "Restrictions". 6. Verify "Shared streams not allowed" is listed. If "Allow iCloud Photos" is checked in the Apple iOS/iPadOS management tool, "allowSharedStream" appears in the configuration profile, or the restrictions policy on the iPhone and iPad does not list "Shared streams not allowed", this is a finding.

Check Text ( C-96287r1_chk )

Note: This requirement is Not Applicable if the AO has approved users' full access to the Apple App Store for downloading unmanaged (personal) apps and syncing personal data on the device with personal cloud data storage accounts (see Section 2.9 of the STIG Supplemental document for more details). The site must have an AO-signed document showing the AO has assumed the risk for users' full access to the Apple App Store.

Review configuration settings to confirm "Allow iCloud Photos" is disabled.

This check procedure is performed on both the Apple iOS/iPadOS management tool and the iPhone and iPad.

Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review.

In the Apple iOS/iPadOS management tool, verify "Allow iCloud Photos" is unchecked.

Alternatively, verify the text "allowSharedStream" appears in the configuration profile (.mobileconfig file).

On the iPhone and iPad:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles" or "Profiles & Device Management" or "Device Management".
4. Tap the Configuration Profile from the Apple iOS/iPadOS management tool containing the restrictions policy.
5. Tap "Restrictions".
6. Verify "Shared streams not allowed" is listed.

If "Allow iCloud Photos" is checked in the Apple iOS/iPadOS management tool, "allowSharedStream" appears in the configuration profile, or the restrictions policy on the iPhone and iPad does not list "Shared streams not allowed", this is a finding.

Fix Text (F-103131r1_fix)
Install a configuration profile to disable "Allow iCloud Photos".