Title

Apple iOS must not allow managed apps to write contacts to unmanaged contacts accounts. (Cat III impact)

Discussion

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 apps 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

Check Content

Review configuration settings to confirm "Allow managed apps to write contacts to unmanaged contacts accounts" is disabled. This check procedure is performed on both the Apple iOS management tool and the Apple iOS device. Note: If an organization has multiple configuration profiles, then 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 managed apps to write contacts to unmanaged contacts accounts" is unchecked. On the iOS device: 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 iOS management tool containing the restrictions policy. 5. Tap "Restrictions". 6. Verify "Allow managed apps to write contacts to unmanaged contacts accounts" is not listed. If "Allow managed apps to write contacts to unmanaged contacts accounts" is checked in the iOS management tool or the restrictions policy on the iOS device from the iOS management tool lists "Allow managed apps to write contacts to unmanaged contacts accounts", this is a finding.

Fix Text

Install a configuration profile to prevent managed apps writing contacts to unmanaged contacts.

Additional Identifiers

Rule ID: SV-96645r1_rule

Vulnerability ID: V-81931

Group Title: PP-MDF-991000

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.