+CM-07 [L] Least Functionality

CM-07 [L] Least Functionality

Control

  1. Configure the system to provide only [Assignement: mission-essential capabilities] ; and
  2. Prohibit or restrict the use of the following functions, ports, protocols, software, and/or services: [Assignement: organization-defined prohibited or restricted functions, system ports, protocols, software, and/or services].

Discussion

Systems provide a wide variety of functions and services. Some of the functions and services routinely provided by default may not be necessary to support essential organizational missions, functions, or operations. Additionally, it is sometimes convenient to provide multiple services from a single system component, but doing so increases risk over limiting the services provided by that single component. Where feasible, organizations limit component functionality to a single function per component. Organizations consider removing unused or unnecessary software and disabling unused or unnecessary physical and logical ports and protocols to prevent unauthorized connection of components, transfer of information, and tunneling. Organizations employ network scanning tools, intrusion detection and prevention systems, and end-point protection technologies, such as firewalls and host-based intrusion detection systems, to identify and prevent the use of prohibited functions, protocols, ports, and services. Least functionality can also be achieved as part of the fundamental design and development of the system (see [SA-8](#sa-8), [SC-2](#sc-2) , and [SC-3](#sc-3)).

Assessment Objective

  1. the system is configured to provide only [Assignement: mission-essential capabilities];
    1. the use of [Assignement: functions] is prohibited or restricted;
    2. the use of [Assignement: ports] is prohibited or restricted;
    3. the use of [Assignement: protocols] is prohibited or restricted;
    4. the use of [Assignement: software] is prohibited or restricted;
    5. the use of [Assignement: services] is prohibited or restricted.

Assessment Method

Examine

Configuration management policy procedures addressing least functionality in the system configuration management plan system design documentation system configuration settings and associated documentation system component inventory common secure configuration checklists system security plan other relevant documents or records

Interview

Organizational personnel with security configuration management responsibilities organizational personnel with information security responsibilities system/network administrators system developers

1. Oversigt

1.1 Referencer

1.2 Identificerede krav

1.3 Relaterede reguleringer

2. Identificerede krav

Krav

3. Relaterede reguleringer

Reguleringer

Linkede sager

Sagslinks
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  • NIST -

    EN: Publications of the National Institute of Standards and Technology (NIST), U.S. Department of Commerce, https://www.nist.gov/, from their electronic versions (OSCAL; SP 800-63-4 from its HTML version, https://pages.nist.gov/800-63-4/). Works of NIST employees are not subject to copyright protection in the United States (17 U.S.C. § 105); the OSCAL content is dedicated to the public domain worldwide (CC0 1.0); outside the United States NIST grants the right to reprint its technical series publications in all formats (NIST copyright statement). Republished courtesy of the National Institute of Standards and Technology; each document names its citation. Divided into sections and converted into the GRCA format, the wording unchanged. Only the versions published by NIST are authoritative.

    DE: Veröffentlichungen des National Institute of Standards and Technology (NIST), U.S. Department of Commerce, https://www.nist.gov/, aus ihren elektronischen Fassungen (OSCAL; SP 800-63-4 aus ihrer HTML-Fassung, https://pages.nist.gov/800-63-4/). Werke von NIST-Beschäftigten sind in den USA urheberrechtlich nicht geschützt (17 U.S.C. § 105); die OSCAL-Inhalte sind weltweit gemeinfrei gestellt (CC0 1.0); außerhalb der USA räumt das NIST das Recht ein, seine Technical-Series-Publikationen in allen Formaten neu zu veröffentlichen (Copyright-Hinweis des NIST). „Republished courtesy of the National Institute of Standards and Technology“; jedes Dokument nennt seine Zitierangabe. In Abschnitte aufgeteilt und in das GRCA-Format umgewandelt, der Wortlaut unverändert. Maßgeblich sind allein die vom NIST veröffentlichten Fassungen.