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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 WN08-SO-000049 SV-48121r1_rule ECRR-1 Low
Description
When the audit log reaches a given percent full, an audit event is written to the security log. An event is recorded as a success audit under the category of System. This option may be especially useful if the audit logs are set to be cleared manually. A recommended setting would be 90 percent.
STIG Date
Windows 8 Security Technical Implementation Guide 2014-01-07

Details

Check Text ( C-44847r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.)
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies -> Security Options.

(See "Updating the Windows Security Options File" in the STIG Overview document if MSS settings are not visible in the system's policy tools.)

If the value for "MSS: (WarningLevel) Percentage threshold for the security event log at which the system will generate a warning" is not set to "90" or less, this is a finding.

The policy referenced configures the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \System\CurrentControlSet\Services\Eventlog\Security\

Value Name: WarningLevel

Value Type: REG_DWORD
Value: 90

If the system is configured to write to an audit server, or is configured to automatically archive full logs, this must be documented with the IAO.
Fix Text (F-41258r1_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.