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The system does not generate an audit event when the audit log reaches a percent full threshold.


Overview

Finding ID Version Rule ID IA Controls Severity
V-4108 3.092 SV-25078r1_rule ECRR-1 Low
Description
When the audit log reaches a given percent full, an audit event is written to the security log. The event ID is 523 and 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 7 Security Technical Implementation Guide 2012-07-02

Details

Check Text ( C-32753r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in.
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies -> Security Options.

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, then 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

Documentable Explanation: If the system is configured to write to an audit server, or is configured to automatically archive full logs this should be documented with the IAO.
Fix Text (F-28831r1_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.