STIGQter: STIG Summary: Apple iOS 12 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 25 Jan 2019:

Apple iOS must implement the management setting: not allow messages in an ActiveSync Exchange account to be forwarded or moved to other accounts in the Apple iOS Mail app.

DISA Rule

SV-96541r1_rule

Vulnerability Number

V-81827

Group Title

PP-MDF-991000

Rule Version

AIOS-12-011600

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.
• CCI-000370 - The organization employs automated mechanisms to centrally manage configuration settings for organization-defined information system components.
• CCI-000764 - The information system uniquely identifies and authenticates organizational users (or processes acting on behalf of organizational users).

Weight

10

Fix Recommendation

Install a configuration profile to prevent Exchange messages from being moved or forwarded between email accounts.

Check Contents

Review configuration settings to confirm "Allow messages to be moved" 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, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review.

In the Apple iOS management tool, verify "Allow messages to be moved" is unchecked under the Exchange payload.

Alternatively, verify the text "<key>PreventMove</key><true/>" appears in the configuration profile (.mobileconfig file).

On the Apple iOS device:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles & Device Management".
4. Tap the Configuration Profile from the Apple iOS management tool containing the Exchange policy.
5. Tap "Accounts".
6. Tap the name of the Exchange account.
7. Verify "Prevent Move" is set to "Yes".

If "Allow messages to be moved" is checked in the Apple iOS management tool, "<key>PreventMove</key><false/>" appears in the configuration profile, or the Exchange policy on the Apple iOS device from the Apple iOS management tool has "Prevent Move" set to "No", this is a finding.

Vulnerability Number

V-81827

Documentable

False

Rule Version

AIOS-12-011600

Severity Override Guidance

Review configuration settings to confirm "Allow messages to be moved" 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, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review.

In the Apple iOS management tool, verify "Allow messages to be moved" is unchecked under the Exchange payload.

Alternatively, verify the text "<key>PreventMove</key><true/>" appears in the configuration profile (.mobileconfig file).

On the Apple iOS device:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles & Device Management".
4. Tap the Configuration Profile from the Apple iOS management tool containing the Exchange policy.
5. Tap "Accounts".
6. Tap the name of the Exchange account.
7. Verify "Prevent Move" is set to "Yes".

If "Allow messages to be moved" is checked in the Apple iOS management tool, "<key>PreventMove</key><false/>" appears in the configuration profile, or the Exchange policy on the Apple iOS device from the Apple iOS management tool has "Prevent Move" set to "No", this is a finding.

Check Content Reference

M

Target Key

3401

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