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

Apple iOS must not allow backup to remote systems (iCloud Keychain).

DISA Rule

SV-96497r1_rule

Vulnerability Number

V-81783

Group Title

PP-MDF-302220

Rule Version

AIOS-12-004300

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-001772 - The organization defines the software programs authorized to execute on the information system.

Weight

10

Fix Recommendation

Install a configuration profile to disable iCloud keychain.

Check Contents

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 iCloud keychain 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 iCloud keychain" is unchecked.

Alternatively, verify the text "<key>allowCloudKeychainSync</key><false/>" 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 iOS management tool containing the management policy.
5. Verify "iCloud Keychain not allowed" is listed.

If "Allow iCloud keychain" is checked in the Apple iOS management tool, "<key>allowCloudKeychainSync</key><true/>" appears in the configuration profile, or "iCloud Keychain not allowed" is not listed on the Apple iOS device, this is a finding.

Vulnerability Number

V-81783

Documentable

False

Rule Version

AIOS-12-004300

Severity Override Guidance

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 iCloud keychain 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 iCloud keychain" is unchecked.

Alternatively, verify the text "<key>allowCloudKeychainSync</key><false/>" 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 iOS management tool containing the management policy.
5. Verify "iCloud Keychain not allowed" is listed.

If "Allow iCloud keychain" is checked in the Apple iOS management tool, "<key>allowCloudKeychainSync</key><true/>" appears in the configuration profile, or "iCloud Keychain not allowed" is not listed on the Apple iOS device, this is a finding.

Check Content Reference

M

Target Key

3401

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