Title

Apple iOS must not allow backup to remote systems (iCloud). (Cat II impact)

Discussion

Backups to remote systems (including cloud backup) can leave data vulnerable to breach on the external systems, which often offer less protection than the MOS. Where the remote backup involves a cloud-based solution, the backup capability is often used to synchronize data across multiple devices. In this case, DoD devices may synchronize DoD-sensitive information to a user's personal device or other unauthorized computers that are vulnerable to breach. Disallowing remote backup mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #40

Check Content

Review configuration settings to confirm iCloud Backup 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 Apple iOS management tool, verify "Allow iCloud backup" is unchecked. Alternatively, verify the text "<key>allowCloudBackup</key> <false/>" appears in the configuration profile (.mobileconfig file). On the Apple iOS device: 1. Open the Settings app. 2. Tap "iCloud". 3. Tap "Backup". 4. Verify "iCloud Backup" is off. If "Allow iCloud backup" is checked in the Apple iOS management tool, "<key>allowCloudBackup</key><true/>" appears in the configuration profile, or iCloud Backup is toggled to the right and appears green on the Apple iOS device, this is a finding.

Fix Text

Install a Configuration Profile to disable iCloud Backup.

Additional Identifiers

Rule ID:

Vulnerability ID: V-61897

Group Title:

Expert Comments

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