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V-282569

CAT II (Medium)

TOSS 5 must act when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity.

Rule ID

SV-282569r1200687_rule

STIG

Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-001855

Discussion

If security personnel are not notified immediately when storage volume reaches 75 percent utilization, they are unable to plan for audit record storage capacity expansion.

Check Content

Verify TOSS 5 takes action when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity using the following command:

$ sudo grep -w space_left /etc/audit/auditd.conf

space_left = 25%

If the value of the "space_left" keyword is not set to 25 percent of the storage volume allocated to audit logs, or if the line is commented out, ask the system administrator (SA) to indicate how the system is providing real-time alerts to the SA and information system security officer (ISSO). If the "space_left" value is not configured to the correct value, this is a finding.

Fix Text

Configure TOSS 5 to initiate an action to notify the SA and ISSO (at a minimum) when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity by adding/modifying the following line in the /etc/audit/auditd.conf file.

space_left  = 25%