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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-4108	WN12-SO-000049	SV-52923r2_rule		Low

Description
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.

STIG	Date
Windows Server 2012 / 2012 R2 Domain Controller Security Technical Implementation Guide	2016-12-19

Details

Check Text ( C-47228r2_chk )
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 (F-45849r2_fix)
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.)

Fix Text (F-45849r2_fix)

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.)