Apple iOS/iPadOS must implement the management setting: Disable Allow MailDrop.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-97475	AIOS-13-011200	SV-106579r1_rule		Medium

Description
MailDrop allows users to send large attachments up to 5 GB in size via iCloud. Storing data with a non-DoD cloud provider may leave the data vulnerable to breach. Disabling non-DoD cloud services mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #47

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

Details

Check Text ( C-96311r1_chk )
Review configuration settings to confirm "Allow MailDrop" is disabled. This validation 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 MailDrop" is not checked. On the iPhone and iPad: 1. Open the Settings app. 2. Tap "General". 3. Tap "Profiles & Device Management". 4. Tap the Configuration Profile from the Apple iOS/iPadOS management tool containing the restrictions policy. 5. Tap "Accounts". 6. Tap the "mail account". 7. Verify "Mail Drop Enabled" is set to "No". If "Allow MailDrop" is not disabled in the Apple iOS/iPadOS management tool or the restrictions policy on the iPhone and iPad lists "Mail Drop Enabled" as "Yes", this is a finding.

Check Text ( C-96311r1_chk )

Review configuration settings to confirm "Allow MailDrop" is disabled.

This validation 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 MailDrop" is not checked.

On the iPhone and iPad:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles & Device Management".
4. Tap the Configuration Profile from the Apple iOS/iPadOS management tool containing the restrictions policy.
5. Tap "Accounts".
6. Tap the "mail account".
7. Verify "Mail Drop Enabled" is set to "No".

If "Allow MailDrop" is not disabled in the Apple iOS/iPadOS management tool or the restrictions policy on the iPhone and iPad lists "Mail Drop Enabled" as "Yes", this is a finding.

Fix Text (F-103155r1_fix)
Configure the Apple iOS/iPadOS configuration profile to disable "Allow MailDrop".