Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations

Ross, Ron; Pillitteri, Victoria; Dempsey, Kelley; Riddle, Mark; Guissanie, Gary

doi:https://doi.org/10.6028/NIST.SP.800-171r2

SP 800-171 Rev. 2

Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations

Documentation Topics

Date Published: February 2020 (includes updates as of January 28, 2021)

Supersedes: SP 800-171 Rev. 2 (02/21/2020)

Planning Note (4/13/2022):

The security requirements in SP 800-171 Revision 2 are available in multiple data formats. The PDF of SP 800-171 Revision 2 is the authoritative source of the CUI security requirements. If there are any discrepancies noted in the content between the CSV, XLSX, and the SP 800-171 PDF, please contact sec-cert@nist.gov and refer to the PDF as the normative source.

CUI SSP template

** There is no prescribed format or specified level of detail for system security plans. However, organizations ensure that the required information in [SP 800-171 Requirement] 3.12.4 is conveyed in those plans.

Author(s)

Ron Ross (NIST), Victoria Pillitteri (NIST), Kelley Dempsey (NIST), Mark Riddle (NARA), Gary Guissanie (IDA)

Abstract

The protection of Controlled Unclassified Information (CUI) resident in nonfederal systems and organizations is of paramount importance to federal agencies and can directly impact the ability of the federal government to successfully conduct its essential missions and functions. This publication provides agencies with recommended security requirements for protecting the confidentiality of CUI when the information is resident in nonfederal systems and organizations; when the nonfederal organization is not collecting or maintaining information on behalf of a federal agency or using or operating a system on behalf of an agency; and where there are no specific safeguarding requirements for protecting the confidentiality of CUI prescribed by the authorizing law, regulation, or governmentwide policy for the CUI category listed in the CUI Registry. The requirements apply to all components of nonfederal systems and organizations that process, store, and/or transmit CUI, or that provide protection for such components. The security requirements are intended for use by federal agencies in contractual vehicles or other agreements established between those agencies and nonfederal organizations.

Keywords

basic security requirement; contractor systems; Controlled Unclassified Information; CUI Registry; derived security requirement; Executive Order 13556; FIPS Publication 199; FIPS Publication 200; FISMA; NIST Special Publication 800-53; nonfederal systems; security assessment; security control; security requirement; nonfederal organizations

Control Families

Access Control; Audit and Accountability; Awareness and Training; Configuration Management; Identification and Authentication; Maintenance; Media Protection; Personnel Security; Physical and Environmental Protection; System and Communications Protection; System and Information Integrity

Documentation

Publication:
SP 800-171 Rev. 2 (DOI)
Local Download

Supplemental Material:
Security Requirements Spreadsheet (xls)
Security Requirements CSV (other)
README for CSV (txt)
CUI Plan of Action template (word)
CUI SSP template **[see Planning Note] (word)
Mapping: Cybersecurity Framework v.1.0 to SP 800-171 Rev. 2 (xls)

Other Parts of this Publication:
SP 800-171A

Related NIST Publications:
SP 800-172

Document History:
01/28/21: SP 800-171 Rev. 2 (Final)

Topics

Security and Privacy
audit & accountability; awareness training & education; maintenance; security controls; threats

Laws and Regulations
Federal Acquisition Regulation; Federal Information Security Modernization Act