CCI-000044 in U Apple iOS-iPadOS 16 BYOAD V1R1

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UNCLASSIFIED

Group Title

PP-MDF-333040

Group ID

V-257111

Rule Version

AIOS-16-706900

Rule Title

Apple iOS/iPadOS 16 must be configured to not allow more than 10 consecutive failed authentication attempts.

Rule ID

SV-257111r904233_rule

Rule Severity

● Medium

Rule Weight

10.0

Vuln Discussion

The more attempts an adversary has to guess a password, the more likely the adversary will enter the correct password and gain access to resources on the device. Setting a limit on the number of attempts mitigates this risk. Setting the limit at 10 or less gives authorized users the ability to make a few mistakes when entering the password but still provides adequate protection against dictionary or brute force attacks on the password.

SFR ID: FMT_SMF_EXT.1.1 #2c, FIA_AFL_EXT.1.5

Documentable

False

Check Content

Review configuration settings to confirm consecutive failed authentication attempts is set to 10 or fewer.

This procedure is performed in the Apple iOS/iPadOS management tool and on 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.

For User Enrollment, check a sample of user phones to verify compliance:

1. Open the Settings app.

2. Tap "Face ID & Passcode".

3. When prompted, enter Passcode.

4. Scroll down and verify "Erase Data" is turned on.

Note: The number of failed attempts is automatically set to "10".

For Device Enrollment:

In the Management tool, verify the "Maximum number of failed attempts" value is set to "10" or fewer.

On the iPhone and iPad:

1. Open the Settings app.

2. Tap "General".

3. Tap "VPN & Device Management".

4. Tap the Configuration Profile from the iOS management tool containing the password policy.

5. Tap "Restrictions".

6. Tap "Passcode".

7. Verify "Max failed attempts" is listed as "10" or fewer.

For User Enrollment, if "Erase Data" is not turned on for sample devices, this is a finding.

For Device Enrollment, if the "Maximum number of failed attempts" is more than "10" in the iOS management tool or the password policy on the iPhone and iPad does not list "Max failed attempts" of "10" or fewer, this is a finding.

Check System

C-60796r904231_chk

Fix Reference

F-60737r904232_fix

Fix Text

For User Enrollment, this is a User-Based Enforcement (UBE) control. The device user must configure setting on their personal phone.

1. Open the Settings app.

2. Tap "Face ID & Passcode".

3. When prompted, enter Passcode.

4. Scroll down and turn on "Erase Data".

Note: The number of failed attempts is automatically set to "10".

For Device Enrollment, install a configuration profile to allow only "10" or fewer consecutive failed authentication attempts.

Identities

CCI-000044

Enforce the organization-defined limit of consecutive invalid logon attempts by a user during the organization-defined time period.

800-53 :: AC-7 a
800-53 Rev. 4 :: AC-7 a
800-53 Rev. 5 :: AC-7 a
800-53A :: AC-7.1 (ii)

UNCLASSIFIED