IAC-20.7: Authorized System Accounts
Mechanisms exist to define and document the types of accounts allowed and prohibited on Technology Assets, Applications and/or Services (TAAS).
Control Question: Does the organization define and document the types of accounts allowed and prohibited on Technology Assets, Applications and/or Services (TAAS)?
Capability Maturity Model
Level 0 — Not Performed
There is no evidence of a capability to define and document the types of accounts allowed and prohibited on Technology Assets, Applications and/or Services (TAAS).
Level 1 — Performed Informally
C|P-CMM1 is N/A, since a structured process is required to define and document the types of accounts allowed and prohibited on Technology Assets, Applications and/or Services (TAAS).
Level 2 — Planned & Tracked
C|P-CMM2 is N/A, since a well-defined process is required to define and document the types of accounts allowed and prohibited on Technology Assets, Applications and/or Services (TAAS).
Level 3 — Well Defined
Identification & Authentication (IAC) efforts are standardized across the organization and centrally managed, where technically feasible, to ensure consistency. CMM Level 3 control maturity would reasonably expect all, or at least most, the following criteria to exist:
- An Identity & Access Management (IAM) function, or similar function, centrally manages permissions and implements “least privileges” Role Based Access Control (RBAC) practices for the management of user, group and system accounts, including privileged accounts.
- The Human Resources (HR) department governs personnel management operations and notifies IAM personnel of personnel role changes for RBAC-based provisioning and deprovisioning actions.
- An IT Asset Management (ITAM) function, or similar function, categorizes endpoint devices according to the data the asset stores, transmits and/ or processes and applies the appropriate technology controls to protect the asset and data that conform to industry-recognized standards for hardening (e.g., DISA STIGs, CIS Benchmarks or OEM security guides).
- An IT infrastructure team, or similar function, ensures that statutory, regulatory and contractual cybersecurity and data privacy obligations are addressed to ensure secure configurations are designed, built and maintained.
- Active Directory (AD), or a similar technology, is used to centrally manage identities and permissions. Only by exception due to a technical or business limitation are solutions authorized to operate a decentralized access control program for Technology Assets, Applications and/or Services (TAAS).
- Administrative processes and technologies revoke user access rights following changes in personnel roles and duties, if no longer necessary or permitted.
- Administrative processes and technologies revoke user access rights in a timely manner, up on termination of employment or contract.
Level 4 — Quantitatively Controlled
See C|P-CMM3. There are no defined C|P-CMM4 criteria, since it is reasonable to assume a quantitatively-controlled process is not necessary to define and document the types of accounts allowed and prohibited on Technology Assets, Applications and/or Services (TAAS).
Level 5 — Continuously Improving
See C|P-CMM4. There are no defined C|P-CMM5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to define and document the types of accounts allowed and prohibited on Technology Assets, Applications and/or Services (TAAS).
Assessment Objectives
- IAC-20.7_A01 the types of accounts allowed on systems, applications and services is/are defined and documented.
- IAC-20.7_A02 the types of accounts prohibited on systems, applications and services is/are defined and documented.
Technology Recommendations
Micro/Small
- Microsoft Active Directory (https://microsoft.com)
- Microsoft Entra (https://microsoft.com)
- AWS IAM (https://aws.amazon.com)
Small
- Microsoft Active Directory (https://microsoft.com)
- Microsoft Entra (https://microsoft.com)
- AWS IAM (https://aws.amazon.com)
Medium
- Microsoft Active Directory (https://microsoft.com)
- Microsoft Entra (https://microsoft.com)
- AWS IAM (https://aws.amazon.com)
Large
- Microsoft Active Directory (https://microsoft.com)
- Microsoft Entra (https://microsoft.com)
- AWS IAM (https://aws.amazon.com)
Enterprise
- Microsoft Active Directory (https://microsoft.com)
- Microsoft Entra (https://microsoft.com)
- AWS IAM (https://aws.amazon.com)