CMMC Navigatorby Foxx Cyber Bedrock CMMC

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3.3.4Get told when logging breaks

An alert fires when log collection fails, rather than silence you mistake for calm.

The requirement, verbatim

NIST SP 800-171 Rev. 2 · 3.3.4

Alert in the event of an audit logging process failure.

Requirement 3.3.4, practice name in the CMMC assessment guide: Audit Failure Alerting.

NIST's discussion

Audit logging process failures include software and hardware errors, failures in the audit record capturing mechanisms, and audit record storage capacity being reached or exceeded. This requirement applies to each audit record data storage repository (i.e., distinct system component where audit records are stored), the total audit record storage capacity of organizations (i.e., all audit record data storage repositories combined), or both.

NIST SP 800-171 Rev. 2, discussion under 3.3.4. Whitespace normalised; wording unchanged.

Assessment objectives

An assessor decides each of these separately. The requirement is met only when every objective is.

  1. [a] personnel or roles to be alerted in the event of an audit logging process failure are identified
  2. [b] types of audit logging process failures for which alert will be generated are defined
  3. [c] identified personnel or roles are alerted in the event of an audit logging process failure

NIST SP 800-171A, determination statements for 3.3.4.

For assessors: examine, interview, test

NIST SP 800-171A names what an assessor may examine, whom they may interview, and what they may test for this requirement. Assessors select from these lists; they are not a checklist of everything you must produce.

Examine
  • Audit and accountability policy
  • procedures addressing response to audit processing failures
  • system design documentation
  • system security plan
  • system configuration settings and associated documentation
  • list of personnel to be notified in case of an audit logging process failure
  • system audit logs and records
  • other relevant documents or records
Interview
  • Personnel with audit and accountability responsibilities
  • personnel with information security responsibilities
  • system or network administrators
  • system developers
Test
  • Mechanisms implementing system response to audit logging process failure
  • mechanisms for notifying defined personnel in case of audit logging process failure

NIST SP 800-171A, potential assessment methods and objects for 3.3.4.

Evidence

No evidence examples are published for this requirement yet. The objectives above are what an assessor checks; evidence is whatever shows each one is true in your environment, dated and kept with your system security plan.

Scoring weight

Worth 1 point. Not meeting this requirement subtracts 1 from your 110-point SPRS score.

DoD NIST SP 800-171 Assessment Methodology v1.2.1 weighting, as carried in the Bedrock scoring table. The score starts at 110 and subtracts the weight of every requirement not met.

In Rev. 3

Rev. 2 is what your contract requires today. A standing DoD class deviation keeps Rev. 2 in force; NIST has published Rev. 3, but it is not adopted for contracts. In Rev. 3 this requirement is reworded: 03.03.04 Response to Audit Logging Process Failures. It gains organization-defined parameters.

See the Rev. 2 and Rev. 3 wording word by word, or start with the status page.

Where this page's facts come from
Requirement text
bedrock-cmmc-api@89b8e8e:migrations/004_reference_requirements.sql#Requirement.basicRequirement@rev2
Discussion
bedrock-cmmc-api@89b8e8e:migrations/004_reference_requirements.sql#Requirement.discussion@rev2
Practice name
bedrock-cmmc-api@89b8e8e:migrations/004_reference_requirements.sql#Requirement.title@rev2 (CMMC Assessment Guide practice name)
Objectives
bedrock-cmmc-api@89b8e8e:migrations/005_reference_objectives.sql#AssessmentObjective.description@rev2
Examine, interview, test
bedrock-cmmc-api@89b8e8e:migrations/005_reference_objectives.sql#AssessmentObjective.description@rev2 ({examineGuidance, interviewGuidance, testGuidance})
Level
bedrock-cmmc-api@89b8e8e:migrations/021_fix_level1_requirements.sql#Requirement.cmmcLevel@rev2
Weight
bedrock-cmmc-api@89b8e8e:internal/cmmc/requirement_values.go#requirementValues (DoD AM v1.2.1 / eMASS L2 template v3.8)
Rev. 3 mapping
bedrock-cmmc-api@89b8e8e:docs/reference/nist-800-171-rev3/normalized/r2_r3_transition_map.json#r2_to_r3
Plain-language title and summary
editorial/CMMC Navigator.dc.html#RAW (Foxx Cyber editorial)