The operating system must allocate audit record storage capacity.

An XCCDF Rule

Description

<VulnDiscussion>Proper audit storage capacity is crucial to ensuring the ongoing logging of critical events.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-219995r854555_rule
Severity: Medium
References: CCI-001849
Updated: 9 months ago

The Audit Configuration, Audit Control and ZFS File System Management profiles are required.

This action applies to the global zone only. Determine the zone that you are currently securing.

# zonename
If the command output is "global", this action applies.

Determine the audit system directory name:

# pfexec auditconfig -getplugin audit_binfile
Plugin: audit_binfile (active)

The output of the command will appear in this form:

Attributes: p_dir=/var/audit;p_fsize=4M;p_minfree=1;

p_dir defines the current audit file system.

Note: By default in Solaris 11.1, /var/audit is a link to /var/share/audit which is mounted on rpool/VARSHARE.

Set a minimum percentage of free space on the audit_binfile plugin to 2%.

# pfexec auditconfig -setplugin audit_binfile p_minfree=2

Restart the audit system.

# pfexec audit -s

Enable compression for the audit filesystem.

# pfexec zfs set compression=on [poolname/filesystemname]

Set a ZFS quota on the default /var/share filesystem for audit records to ensure that the root pool is not filled up with audit logs.

# pfexec zfs set quota=XXG [poolname/filesystemname]

This commands sets the quota to XX Gigabytes. This value should be based upon organizational requirements.

Set a ZFS reservation on the default /var/share filesystem for audit records to ensure that the audit file system is guaranteed a fixed amount of storage.

# pfexec zfs set reservation=XXG [poolname/filesystemname]

This commands sets the quota to XX Gigabytes. This value should be based upon organizational requirements.

The operating system must allocate audit record storage capacity.

Description

Remediation - Manual Procedure