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AC.1.002
Content
Control Acronym
AC
Family
Access Control
CMMC Level
1
800-171 Control #
3.1.2
CMMC Description
Limit information system access to the types of transactions and functions that authorized users are permitted to execute.
CMMC Clarification
Make sure to limit users/employees to only the information systems, roles, or applications they are permitted to use and that are needed for their jobs. Example System use notificatons can be implemented using messages or warning banners displayed before individual login to systems. You are in charge of payroll for the company and need access to certain company financial information and systems. You work with IT to set up the system so that when users log onto the company’s network, only those employees you allow can use the payroll applications and access payroll data. Because of this good access control, your coworkers in the Shipping Department cannot access information about payroll or paychecks.
800-171 Description
Limit system access to the types of transactions and functions that authorized users are permitted to execute.
800-171 Discussion
Organizations may choose to define access privileges or other attributes by account, by type of account, or a combination of both. System account types include individual, shared, group, system, anonymous, guest, emergency, developer, manufacturer, vendor, and temporary. Other attributes required for authorizing access include restrictions on time-of-day, day-of-week, and point-of- origin. In defining other account attributes, organizations consider system-related requirements (e.g., system upgrades scheduled maintenance,) and mission or business requirements, (e.g., time zone differences, customer requirements, remote access to support travel requirements).
Other Source Discussion
N/A
CIS Control References
CIS Controls v7.1 1.4, 1.6, 5.1, 8.5, 14.6, 15.10, 16.8, 16.9, 16.11
NIST 800-53 Control Ref.
NIST SP 800-53 Rev 4 AC-2, AC-3, AC-17
CMMC Derived
NIST CSF Control References
NIST CSF v1.1 PR.AC-1, PR.AC-3, PR.AC-4, PR.AC-6, PR.PT-3, PR.PT-4
NIST 800-171 References
NIST SP 800-171 Rev 1 3.1.2
Applicable FAR Clause
FAR Clause 52.204-21 b.1.ii
NIST CSF Control Reference
CERT RMM Reference
CERT RMM v1.2 TM:SG4.SP1
Modification of NIST 800-171B Reference
NIST 800-171B Reference
UK NCSCCyber Reference
AS ACSC Reference
Sub-Criterias
Assessment Sub-Criteria 1
AC.1.002.[a] the types of transactions and functions that authorized users are permitted to execute are defined; and
Assessment Sub-Criteria 2
AC.1.002.[b] system access is limited to the defined types of transactions and functions for authorized users.