Check: AIOS-02-080013
Apple iOS 10 STIG:
AIOS-02-080013
(in versions v1 r3 through v1 r1)
Title
Apple iOS must be configured to disable Touch ID. (Cat II impact)
Discussion
Many mobile devices now permit a user to unlock the user's device by presenting a fingerprint to an embedded fingerprint reader. Other biometrics and token-based systems are feasible as well. None of these alternatives are currently evaluated in a Common Criteria evaluation of a mobile device against the Security Target based on the Mobile Device Fundamentals Protection Profile. Many have known vulnerabilities. Until there are DoD-approved assurance activities to evaluate the efficacy of these alternatives, they are significant potential vulnerabilities to DoD information and information systems. Disabling them mitigates the risk of their use. Touch ID is a fingerprint reader that has been installed on some models of Apple iOS devices. SFR ID: FMT_SMF_EXT.1.1 #45b
Check Content
If the Authorizing Official (AO) has approved the use of Touch ID, this requirement is not applicable. Review configuration settings to confirm "Allow Touch ID to unlock device" 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 iOS management tool, verify "Allow Touch ID to unlock device" is unchecked. Alternatively, verify the text "<key>allowFingerprintForUnlock</key><false/>" appears in the configuration profile (.mobileconfig file). 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 "Touch ID unlock not allowed" is listed. If "Allow Touch ID to unlock device" is checked in the iOS management tool, "<key>allowFingerprintForUnlock</key><true/>" appears in the configuration profile, or the restrictions policy on the Apple iOS device from the Apple iOS management tool does not list "Touch ID unlock not allowed", this is a finding.
Fix Text
Install a configuration profile to disable Touch ID for device unlock.
Additional Identifiers
Rule ID: SV-86429r1_rule
Vulnerability ID: V-71805
Group Title:
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000366 |
The organization implements the security configuration settings. |
| CCI-002008 |
The organization, for PKI-based authentication, employs a deliberate organization-wide methodology for managing the content of PKI trust stores installed across all platforms including networks, operating systems, browsers, and applications. |