myctrl.tools
Compare

CM-7(1)—Periodic Review

MODERATE
HIGH

>Control Description

a

Review the system ⚙organization-defined frequency to identify unnecessary and/or nonsecure functions, ports, protocols, software, and services; and

b

Disable or remove ⚙organization-defined functions, ports, protocols, software, and services within the system deemed to be unnecessary and/or nonsecure.

>Cross-Framework Mappings

SCF

CFG-03.1
Compare

>Programmatic Queries

Beta

Related Services

AWS Security Hub
Amazon Inspector

CLI Commands

List unused security groups for review
aws ec2 describe-security-groups --region us-east-1 --query 'SecurityGroups[?IpPermissions==`[]` && IpPermissionsEgress==`[]`]'
Get Inspector findings for unnecessary functionality
aws inspector2 list-findings --filter-criteria '{"resourceType": [{"comparison": "EQUALS", "value": "EC2"}]}' --region us-east-1
Describe unused IAM roles and policies
aws iam get-credential-report --download-path /tmp/credential-report.csv
Review unused VPC endpoints
aws ec2 describe-vpc-endpoints --region us-east-1 --query 'VpcEndpoints[?State==`available`]'
Open AWS ConsoleDocumentation

>Supplemental Guidance

Organizations review functions, ports, protocols, and services provided by systems or system components to determine the functions and services that are candidates for elimination. Such reviews are especially important during transition periods from older technologies to newer technologies (e.g., transition from IPv4 to IPv6). These technology transitions may require implementing the older and newer technologies simultaneously during the transition period and returning to minimum essential functions, ports, protocols, and services at the earliest opportunity.

Organizations can either decide the relative security of the function, port, protocol, and/or service or base the security decision on the assessment of other entities. Unsecure protocols include Bluetooth, FTP, and peer-to-peer networking.

>Related Controls

AC-18

>Assessment Interview Topics

Questions assessors commonly ask

Process & Governance:

  • •What formal policies and procedures govern the implementation of CM-7(1) (Periodic Review)?
  • •Who are the designated roles responsible for implementing, maintaining, and monitoring CM-7(1)?
  • •How frequently is the CM-7(1) policy reviewed and updated, and what triggers policy changes?
  • •What training or awareness programs ensure personnel understand their responsibilities related to CM-7(1)?

Technical Implementation:

  • •Describe the specific technical mechanisms or controls used to enforce CM-7(1) requirements.
  • •What automated tools, systems, or technologies are deployed to implement CM-7(1)?
  • •How is CM-7(1) integrated into your system architecture and overall security posture?
  • •What configuration settings, parameters, or technical specifications enforce CM-7(1) requirements?

Evidence & Documentation:

  • •What documentation demonstrates the complete implementation of CM-7(1)?
  • •What audit logs, records, reports, or monitoring data validate CM-7(1) compliance?
  • •Can you provide evidence of periodic reviews, assessments, or testing of CM-7(1) effectiveness?
  • •What artifacts would you present during a FedRAMP assessment to demonstrate CM-7(1) compliance?

Ask AI

Configure your API key to use AI features.