The AAA Service must be configured to queue audit records locally until communication is restored when any audit processing failure occurs.

From Authentication Authorization and Accounting Service Security Requirements Guide

Part of SRG-APP-000109-AAA-000031

Associated with: CCI-000140

SRG-APP-000109-AAA-000031_rule The AAA Service must be configured to queue audit records locally until communication is restored when any audit processing failure occurs.

Vulnerability discussion

It is critical that when the AAA Service is at risk of failing to process audit logs as required, it take action to mitigate the failure. Audit processing failures include: software/hardware errors; failures in the audit capturing mechanisms; and audit storage capacity being reached or exceeded. Responses to audit failure depend upon the nature of the failure mode. For AAA Service, availability is an overriding concern, and so both of the following approved actions in response to an audit failure must be met:(i) If the failure was caused by the lack of audit record storage capacity, the AAA Service must continue generating audit records if possible (automatically restarting the audit service if necessary), overwriting the oldest audit records in a first-in-first-out manner.(ii) If audit records are sent to a centralized collection server and communication with this server is lost or the server fails, the AAA Service must queue audit records locally until communication is restored or until the audit records are retrieved manually. Upon restoration of the connection to the centralized collection server, action should be taken to synchronize the local audit data with the collection server.

Check content

Verify the AAA Service is configured to queue audit records locally when any audit processing failure occurs. The queuing must continue until communication is restored or until the audit records are retrieved manually. Some specific implementations may further require automatically restarting the audit service to synchronize the local audit data with the collection server. If the AAA Service is not configured to queue audit records locally until communication is restored when any audit processing failure occurs, this is a finding.

Fix text

Configure the AAA Service to queue audit records locally until communication is restored when any audit processing failure occurs. Some specific implementations may further require automatically restarting the audit service to synchronize the local audit data with the collection server. In some cases the AAA Service may require the audit records to be retrieved manually in the event of audit failure.

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