SV-25114r2: The system must be configured to require case insensitivity for non-Windows subsystems. | Windows 7 Security Technical Implementation Guide

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Assessment Title

Rule Text

The system must be configured to require case insensitivity for non-Windows subsystems.

Description

Discussion Text

This setting controls the behavior of non-Windows subsystems when dealing with the case of arguments or commands. Case sensitivity could lead to the access of files or commands that must be restricted. To prevent this from happening, case insensitivity restrictions must be required.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366CCE-9319-5

Additional Details

Third-Party Tools

Responsibility

System Administrator

References

DPMS Target Windows 7 DISA DPMS Target Windows 7 1712

Checks

OVAL

oval:mil.disa.fso.windows:var:372400 ← xccdf_mil.disa.stig_value_system_objects_require_case_insensitivity_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:3724
# The system must be configured to require case insensitivity for non-Windows subsystems.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'System objects: Require case insensitivity for non-Windows subsystems' is set to 'Enabled'
# 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\SYSTEM\CurrentControlSet\Control\Session Manager\Kernel').GetValueKind('ObCaseInsensitive').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Kernel' -Name 'ObCaseInsensitive' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'ObCaseInsensitive') -eq 1))
}

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:3724
$registryPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Kernel"
$registryKey = "ObCaseInsensitive"
if (Test-Path $registryPath) {
    $regValue = Get-ItemProperty -Path $registryPath -Name $registryKey -ErrorAction SilentlyContinue
    if ($regValue -and $regValue.$registryKey -eq 1) {
        Write-Output "PASS"; exit 0
    }
}
Write-Output "FAIL"; exit 1

Remediation

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "System Objects: Require case insensitivity for non-Windows subsystems" to "Enabled".