The system must generate an audit event when the audit log reaches a percentage of full threshold.

From Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide

Associated with: CCI-000139 CCI-001855 CCI-001858

SV-52923r2_rule The system must generate an audit event when the audit log reaches a percentage of full threshold.

Vulnerability discussion

When the audit log reaches a given percent full, an audit event is written to the security log. It is recorded as a successful audit event under the category of System. This option may be especially useful if the audit logs are set to be cleared manually.

Check content

If the system is configured to write to an audit server, or is configured to automatically archive full logs, this is NA. If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\Eventlog\Security\ Value Name: WarningLevel Value Type: REG_DWORD Value: 90 (or less)

Fix text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (WarningLevel) Percentage threshold for the security event log at which the system will generate a warning" to "90" or less. (See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

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