NIST Special Publication 800-171 Revision 2
Date Published: January 28th, 2021
Withdrawn on May 14, 2024. Superseded by SP 800-171 Rev. 3
Author(s): Ron Ross (NIST), Victoria Pillitteri (NIST), Kelley Dempsey (NIST), Mark Riddle (NARA), Gary Guissanie (IDA)
Note: A Class Deviation is in effect as of May 2, 2024 (DEVIATION 2024O0013). The deviation clause requires contractors, who are subject to 252.204-7012, to comply with National Institute of Standards and Technology (NIST) Special Publication (SP) 800-171 Revision 2, instead of the version of NIST SP 800-171 in effect at the time the solicitation is issued or as authorized by the contracting officer. Click Here
AC-3.1.15 Authorize remote execution of privileged commands and remote access to security-relevant information.
Control Family: Access Control
Control Type: Derived
SPRS Value: 1
SPRS Supplemental Guidance:
N/A
CMMC Level(s):
AC.L2-3.1.14
Top Ten Failed Requirement:
No
Referenced in:
DFARS 252.204-7012
Derived From: NIST SP 800-53r4
AC-17(4)
NIST Supplemental Guidance:
N/A
Discussion:
A privileged command is a human-initiated (interactively or via a process operating on behalf of the human) command executed on a system involving the control, monitoring, or administration of the system including security functions and associated security-relevant information. Securityrelevant information is any information within the system that can potentially impact the operation of security functions or the provision of security services in a manner that could result in failure to enforce the system security policy or maintain isolation of code and data. Privileged commands give individuals the ability to execute sensitive, security-critical, or security-relevant system functions. Controlling such access from remote locations helps to ensure that unauthorized individuals are not able to execute such commands freely with the potential to do serious or catastrophic damage to organizational systems. Note that the ability to affect the integrity of the system is considered security-relevant as that could enable the means to by-pass security functions although not directly impacting the function itself.
Determining Statements (NIST SP 800-171Ar2)
Upon assessment, assessors must determine if-
3.1.15[a] privileged commands authorized for remote execution are identified.
3.1.15[b] security-relevant information authorized to be accessed remotely is identified.
3.1.15[c] the execution of the identified privileged commands via remote access is
authorized.
3.1.15[d] access to the identified security-relevant information via remote access is
authorized.
Assessors are instructed to-
Examine: [SELECT FROM: Access control policy; procedures addressing remote access to the system; system configuration settings and associated documentation; system security plan; system audit logs and records; other relevant documents or records].
Interview: [SELECT FROM: System or network administrators; personnel with information security responsibilities].
Test: [SELECT FROM: Mechanisms implementing remote access management].
Potential Solutions Based on Staffing
1-10 FTE |
10-49 FTE |
50-249 FTE |
250-999 FTE |
1000+ FTE |
|---|---|---|---|---|
| WatchGuard Firebox UTM | WatchGuard Firebox UTM | WatchGuard Firebox UTM | Multiple Options | Multiple Options |
| Netwrix Auditor | Netwrix Auditor | Netwrix Auditor | Netwrix Auditor | Netwrix Auditor |
| Microsoft Intune | Microsoft Intune | Microsoft Intune | Microsoft Intune | Microsoft Intune |
| DISA STIGs | DISA STIGs | Tripwire Enterprise | Tripwire Enterprise | Tripwire Enterprise |
| CIS Benchmarks | CIS Benchmarks | DISA STIGs | DISA STIGs | DISA STIGs |
| CIS SecureSuite | CIS SecureSuite | CIS Benchmarks | CIS Benchmarks | CIS Benchmarks |
| CIS SecureSuite | CIS SecureSuite | CIS SecureSuite |