AIX7-00-002008 - AIX must be configured to generate an audit record when 75% of the audit file system is full.

Information

It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system operation may be adversely affected.

Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded.

This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Ensure the '/etc/security/audit/config' file contains the following line:
freepsace = <value>
where <value> is greater than 25%* filesystem capacity

Reset the audit system with the following command:
# /usr/sbin/audit shutdown

Start the audit system with the following command:
# /usr/sbin/audit start

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_IBM_AIX_7-x_V2R9_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-5a., CAT|II, CCI|CCI-000139, Rule-ID|SV-215241r508663_rule, STIG-ID|AIX7-00-002008, STIG-Legacy|SV-101357, STIG-Legacy|V-91257, Vuln-ID|V-215241

Plugin: Unix

Control ID: bd4a8392a22c8072c9c6f4f531c8a19c881fd3b64a8ca3f1c2e6eb522cb9f6e6