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Check: WN10-AU-000505

Microsoft Windows 10 STIG: WN10-AU-000505 (in versions v2 r9 through v1 r13)

Title

The Security event log size must be configured to 1024000 KB or greater. (Cat II impact)

Discussion

Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.

Check Content

If the system is configured to send audit records directly to an audit server, this is NA. This must be documented with the ISSO. 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: \SOFTWARE\Policies\Microsoft\Windows\EventLog\Security\ Value Name: MaxSize Value Type: REG_DWORD Value: 0x000fa000 (1024000) (or greater)

Fix Text

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> Security >> "Specify the maximum log file size (KB)" to "Enabled" with a "Maximum Log Size (KB)" of "1024000" or greater. If the system is configured to send audit records directly to an audit server, documented with the ISSO.

Additional Identifiers

Rule ID: SV-220780r877391_rule

Vulnerability ID: V-220780

Group Title: SRG-OS-000341-GPOS-00132

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001849	The organization allocates audit record storage capacity in accordance with organization-defined audit record storage requirements.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AU-4	Audit Storage Capacity