Apple iOS/iPadOS 17 must not allow unmanaged apps to read contacts from managed contacts accounts.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258358	AIOS-17-012400	SV-258358r927757_rule		Low

Description
Managed apps have been approved for the handling of DOD sensitive information. Unmanaged apps are provided for productivity and morale purposes but are not approved to handle DOD sensitive information. Examples of unmanaged apps include those for news services, travel guides, maps, and social networking. If a document were to be viewed in a managed app and the user had the ability to open this same document in an unmanaged app, this could lead to the compromise of sensitive DOD data. In some cases, the unmanaged apps are connected to cloud backup or social networks that would permit dissemination of DOD sensitive information to unauthorized individuals. Not allowing data to be opened within unmanaged apps mitigates the risk of compromising sensitive data. SFR ID: FMT_SMF_EXT.1.1 #42, FDP_ACF_EXT.1.2

Description

Managed apps have been approved for the handling of DOD sensitive information. Unmanaged apps are provided for productivity and morale purposes but are not approved to handle DOD sensitive information. Examples of unmanaged apps include those for news services, travel guides, maps, and social networking. If a document were to be viewed in a managed app and the user had the ability to open this same document in an unmanaged app, this could lead to the compromise of sensitive DOD data. In some cases, the unmanaged apps are connected to cloud backup or social networks that would permit dissemination of DOD sensitive information to unauthorized individuals. Not allowing data to be opened within unmanaged apps mitigates the risk of compromising sensitive data. SFR ID: FMT_SMF_EXT.1.1 #42, FDP_ACF_EXT.1.2

STIG	Date
Apple iOS/iPadOS 17 Security Technical Implementation Guide	2023-10-10

Details

Check Text ( C-62099r927755_chk )
Review configuration settings to confirm "Allow unmanaged apps to read contacts from managed contacts accounts" 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 iOS management tool, verify "Allow unmanaged apps to read contacts from managed contacts accounts" is unchecked. On the iPhone and iPad: 1. Open the Settings app. 2. Tap "General". 3. Tap "VPN & Device Management". 4. Tap the Configuration Profile from the iOS/iPadOS management tool containing the restrictions policy. 5. Tap "Restrictions". 6. Verify "Allow unmanaged apps to read contacts from managed contacts accounts" is not listed. If "Allow unmanaged apps to read contacts from managed contacts accounts" is checked in the iOS/iPadOS management tool or the restrictions policy on the iPhone and iPad lists "Allow unmanaged apps to read contacts from managed contacts accounts", this is a finding.

Check Text ( C-62099r927755_chk )

Review configuration settings to confirm "Allow unmanaged apps to read contacts from managed contacts accounts" 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 iOS management tool, verify "Allow unmanaged apps to read contacts from managed contacts accounts" is unchecked.

On the iPhone and iPad:
1. Open the Settings app.
2. Tap "General".
3. Tap "VPN & Device Management".
4. Tap the Configuration Profile from the iOS/iPadOS management tool containing the restrictions policy.
5. Tap "Restrictions".
6. Verify "Allow unmanaged apps to read contacts from managed contacts accounts" is not listed.

If "Allow unmanaged apps to read contacts from managed contacts accounts" is checked in the iOS/iPadOS management tool or the restrictions policy on the iPhone and iPad lists "Allow unmanaged apps to read contacts from managed contacts accounts", this is a finding.

Fix Text (F-62023r927756_fix)
Install a configuration profile to prevent unmanaged apps from reading contacts from managed contacts accounts.