SV-36021r2: The Application event log must be configured to a minimum size requirement. | Windows 7 Security Technical Implementation Guide

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Assessment Title

Rule Text

The Application event log must be configured to a minimum size requirement.

Description

Discussion Text

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.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-001849CCE-9603-2

Additional Details

Responsibility

System Administrator

References

DPMS Target Windows 7 DISA DPMS Target Windows 7 1712

Checks

OVAL

oval:mil.disa.fso.windows:var:383400 ← xccdf_mil.disa.stig_value_maximum_application_log_size_var

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

# Windows PowerShell
# Reconstructed from oval:mil.disa.fso.windows:def:3834
# The Application event log must be configured to a minimum size requirement.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'Specify the maximum log size (KB)' is set at a minimum to 'Enabled:32768'
# registry_object (registry_test)
function test_1 {
  return (((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\EventLog\Application').GetValueKind('MaxSize').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\EventLog\Application' -Name 'MaxSize' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'MaxSize') -ge 32768))
}

if (test_1) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual windows_7 target this check assesses.

# OVAL Definition: oval:mil.disa.fso.windows:def:3834
$compliant = (Test-Path -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\EventLog\Application" -ErrorAction SilentlyContinue) -and ((Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\EventLog\Application" -Name MaxSize -ErrorAction SilentlyContinue).MaxSize -ge 32768)
if ($compliant) { Write-Output "PASS"; Exit 0 } else { Write-Output "FAIL"; Exit 1 }

Remediation

If the system is configured to send audit records directly to an audit server, this is NA.  This must be documented with the ISSO.
				Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Event Log Service -> Application -> "Maximum Log Size (KB)" to "Enabled" with a "Maximum Log Size (KB)" of "32768" or greater.