STIGQter: STIG Summary: Microsoft Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide Version: 3 Release: 2 Benchmark Date: 04 May 2021:

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

DISA Rule

SV-225490r569185_rule

Vulnerability Number

V-225490

Group Title

SRG-OS-000046-GPOS-00022

Rule Version

WN12-SO-000049

Severity

CAT III

CCI(s)

• CCI-000139 - The information system alerts designated organization-defined personnel or roles in the event of an audit processing failure.
• CCI-001855 - The information system provides a warning to organization-defined personnel, roles, and/or locations within an organization-defined time period when allocated audit record storage volume reaches an organization-defined percentage of repository maximum audit record storage capacity.
• CCI-001858 - The information system provides a real-time alert in an organization-defined real-time period to organization-defined personnel, roles, and/or locations when organization-defined audit failure events requiring real-time alerts occur.

Weight

10

Fix Recommendation

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.)

Check Contents

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)

Vulnerability Number

V-225490

Documentable

False

Rule Version

WN12-SO-000049

Severity Override Guidance

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)

Check Content Reference

M

Target Key

4214

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