STIGQter: STIG Summary: Nutanix Acropolis GPOS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Jan 2026:

Nutanix OS must immediately notify the system administrator (SA) and information system security officer (ISSO) (at a minimum) when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity.

DISA Rule

SV-279568r1192085_rule

Vulnerability Number

V-279568

Group Title

SRG-OS-000343-GPOS-00134

Rule Version

NXAC-OS-000091

Severity

CAT III

CCI(s)

• CCI-001855 - Provide a warning to organization-defined personnel, roles, and/or locations within an organization-defined time period when allocated audit log storage volume reaches an organization-defined percentage of repository maximum audit log storage capacity.

Weight

10

Fix Recommendation

1. For AOS, configure the audit rules.

$ sudo salt-call state.sls security/CVM/auditCVM

2. For Prism Central, configure the audit rules.

$ sudo salt-call state.sls security/PCVM/auditPCVM

3. For Files, configure the audit rules.

$ sudo salt-call state.sls security/AFS/auditAFS

4. For AHV, configure the audit rules.

$ sudo salt-call state.sls security/KVM/auditKVM

Check Contents

1. Verify Nutanix OS is configured to act when allocated audit record storage volume reaches 75 percent utilization 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%", or is commented out, this is a finding.

2. Run the following command.

$ sudo grep -w space_left_action /etc/audit/auditd.conf
space_left_action = SYSLOG

If the value of the "space_left_action" is not set to "SYSLOG" or is commented out, this is a finding.

Vulnerability Number

V-279568

Documentable

False

Rule Version

NXAC-OS-000091

Severity Override Guidance

1. Verify Nutanix OS is configured to act when allocated audit record storage volume reaches 75 percent utilization 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%", or is commented out, this is a finding.

2. Run the following command.

$ sudo grep -w space_left_action /etc/audit/auditd.conf
space_left_action = SYSLOG

If the value of the "space_left_action" is not set to "SYSLOG" or is commented out, this is a finding.

Check Content Reference

M

Target Key

5730