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AC-12Session Termination

IL4 Mod
IL4 High
IL5
IL6

>Control Description

Automatically terminate a user session after organization-defined conditions or trigger events requiring session disconnect.

>DoD Impact Level Requirements

No specific parameter values or requirements for this impact level.

>Discussion

Session termination addresses the termination of user-initiated logical sessions (in contrast to SC-10, which addresses the termination of network connections associated with communications sessions (i.e., network disconnect)). A logical session (for local, network, and remote access) is initiated whenever a user (or process acting on behalf of a user) accesses an organizational system. Such user sessions can be terminated without terminating network sessions.

Session termination ends all processes associated with a user's logical session except for those processes that are specifically created by the user (i.e., session owner) to continue after the session is terminated. Conditions or trigger events that require automatic termination of the session include organization-defined periods of user inactivity, targeted responses to certain types of incidents, or time-of-day restrictions on system use.

>Programmatic Queries

Beta

Related Services

IAM
SSM Session Manager
Cognito
API Gateway

CLI Commands

Check IAM role session duration
aws iam list-roles --query 'Roles[*].{Name:RoleName,MaxSession:MaxSessionDuration}'
Get SSM session timeout
aws ssm describe-document --name SSM-SessionManagerRunShell --query 'Document.Content' | jq '.schemaVersion'
Check Cognito token validity
aws cognito-idp describe-user-pool --user-pool-id POOL_ID --query 'UserPool.{TokenValidityUnits:TokenValidityUnits,AccessToken:AccessTokenValidity,IdToken:IdTokenValidity}'
List API Gateway authorizer cache TTL
aws apigateway get-authorizers --rest-api-id API_ID --query 'items[*].{Name:name,CacheTTL:authorizerResultTtlInSeconds}'

>Related Controls

>Assessment Interview Topics

Questions assessors commonly ask

Process & Governance:

  • What formal policies and procedures govern the implementation of AC-12 (Session Termination)?
  • Who are the designated roles responsible for implementing, maintaining, and monitoring AC-12?
  • How frequently is the AC-12 policy reviewed and updated, and what triggers policy changes?
  • What training or awareness programs ensure personnel understand their responsibilities related to AC-12?

Technical Implementation:

  • Describe the specific technical mechanisms or controls used to enforce AC-12 requirements.
  • What automated tools, systems, or technologies are deployed to implement AC-12?
  • How is AC-12 integrated into your system architecture and overall security posture?
  • What configuration settings, parameters, or technical specifications enforce AC-12 requirements?

Evidence & Documentation:

  • What documentation demonstrates the complete implementation of AC-12?
  • What audit logs, records, reports, or monitoring data validate AC-12 compliance?
  • Can you provide evidence of periodic reviews, assessments, or testing of AC-12 effectiveness?
  • What artifacts would you present during a FedRAMP assessment to demonstrate AC-12 compliance?

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