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IAC-15.1: Automated System Account Management (Directory Services)

IAC 5 — Medium Protect

Automated mechanisms exist to support the management of system accounts (e.g., directory services).

Control Question: Does the organization use automated mechanisms to support the management of system accounts?

General (20)
Framework Mapping Values
CIS CSC 8.1 5 5.6 6
GovRAMP Core AC-02(01)
GovRAMP Low+ AC-02(01)
GovRAMP Moderate AC-02(01)
GovRAMP High AC-02(01)
ISO 27002 2022 5.18
NIST 800-53 R4 AC-2(1)
NIST 800-53 R4 (moderate) AC-2(1)
NIST 800-53 R4 (high) AC-2(1)
NIST 800-53 R5 (source) AC-2(1)
NIST 800-53B R5 (moderate) (source) AC-2(1)
NIST 800-53B R5 (high) (source) AC-2(1)
NIST 800-82 R3 MODERATE OT Overlay AC-2(1)
NIST 800-82 R3 HIGH OT Overlay AC-2(1)
NIST 800-171 R2 (source) 3.1.1 3.5.1 3.5.2
NIST 800-171 R3 (source) 03.05.05.b 03.05.05.c 03.05.05.d 03.05.07.c 03.05.07.d 03.05.07.e 03.05.07.f 03.05.12.d 03.05.12.e 03.05.12.f
NIST 800-207 NIST Tenet 3 NIST Tenet 4
SCF CORE Mergers, Acquisitions & Divestitures (MA&D) IAC-15.1
SCF CORE ESP Level 2 Critical Infrastructure IAC-15.1
SCF CORE ESP Level 3 Advanced Threats IAC-15.1
US (16)
Framework Mapping Values
US CJIS Security Policy 5.9.3 (source) AC-2(1)
US CMMC 2.0 Level 1 (source) AC.L1-B.1.I AC.L1-B.1.V AC.L1-B.1.VI
US CMMC 2.0 Level 2 (source) AC.L2-3.1.1 IA.L2-3.5.1 IA.L2-3.5.2
US CMMC 2.0 Level 3 (source) AC.L2-3.1.1
US CMS MARS-E 2.0 AC-2(1)
US DHS CISA TIC 3.0 3.PEP.ID.EINVE
US DHS ZTCF ACC-01 USR-01 USR-03
US FAR 52.204-21 52.204-21(b)(1)(i) 52.204-21(b)(1)(v) 52.204-21(b)(1)(vi)
US FedRAMP R4 AC-2(1)
US FedRAMP R4 (moderate) AC-2(1)
US FedRAMP R4 (high) AC-2(1)
US FedRAMP R5 (source) AC-2(1)
US FedRAMP R5 (moderate) (source) AC-2(1)
US FedRAMP R5 (high) (source) AC-2(1)
US IRS 1075 AC-2(1)
US - TX TX-RAMP Level 2 AC-2(1)
EMEA (1)
Framework Mapping Values
EMEA UK DEFSTAN 05-138 2209 2218
APAC (1)
Framework Mapping Values
APAC Australia ISM June 2024 ISM-1649
Americas (1)
Framework Mapping Values
Americas Canada ITSP-10-171 03.05.05.B 03.05.05.C 03.05.05.D 03.05.07.C 03.05.07.D 03.05.07.E 03.05.07.F 03.05.12.D 03.05.12.E 03.05.12.F

Capability Maturity Model

Level 0 — Not Performed

There is no evidence of a capability to support the management of system accounts.

Level 1 — Performed Informally

C|P-CMM1 is N/A, since a structured process is required to support the management of system accounts.

Level 2 — Planned & Tracked

Identification & Authentication (IAC) efforts are requirements-driven and governed at a local/regional level, but are not consistent across the organization. CMM Level 2 control maturity would reasonably expect all, or at least most, the following criteria to exist: o Implement and maintain an Identity & Access Management (IAM) capability for all users to implement “least privileges” Role Based Access Control (RBAC) practices for the management of user, group and system accounts, including privileged accounts. o Govern IAM technologies via RBAC to prohibit privileged access by non-organizational users, unless there is an explicit support contract for privileged IT support services.

  • Logical Access Control (LAC) is decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices.
  • IT/cybersecurity personnel identify cybersecurity and data protection controls that are appropriate to address applicable statutory, regulatory and contractual requirements for logical access control.
  • IT personnel:
  • Active Directory (AD), or a similar technology, is primarily used to centrally manage identities and permissions with RBAC. Due to technical or business limitations, asset/process owners are empowered to operate a decentralized access control program for their specific systems, applications and services that cannot be integrated into AD.
  • IAM controls are primarily administrative in nature (e.g., policies & standards) to manage accounts and permissions.
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 systems, applications and services.
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 support the management of system accounts.

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 support the management of system accounts.

Assessment Objectives

  1. IAC-15.1_A01 automated mechanisms used to support the management of system accounts are defined.
  2. IAC-15.1_A02 the management of system accounts is supported using organization-defined automated mechanisms.

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)

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