TMA-EDGE-1.4.4

Ensure 'Control use of JavaScript JIT' is set to 'Enabled: Do not allow any site to run JavaScript JIT'

보통레벨 2자동edge

설명

This policy setting specifies whether Microsoft Edge will run the v8 JavaScript engine with JIT (Just In Time) compiler. JIT is a complex pipeline of processes used to optimize JavaScript code for performance. Rationale: Microsoft's research has revealed that attackers usually target the JavaScript engine called “Just-In-Time (JIT) compilation” to hack web browsers. Disabling the JavaScript just-in-time (JIT) compiler prevents attackers from hacking into systems that Microsoft Edge uses. Audit reads the Group Policy registry value and prints 'compliant', 'unset' (policy not configured, reported as FAIL) or the non-compliant value. Registry value: HKLM\SOFTWARE\Policies\Microsoft\Edge:DefaultJavaScriptJitSetting (REG_DWORD); compliant when it is 2. Remediation writes 2 locally; in a domain set it through the ADMX so Group Policy does not revert it.

점검 방법

감사 방식: Windows 레지스트리

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge' -Name 'DefaultJavaScriptJitSetting' -ErrorAction SilentlyContinue).'DefaultJavaScriptJitSetting'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @(2) -contains [int64]$v)) { 'compliant' } else { "non-compliant: $v" }

예상 출력: compliant

조치 방법

조치 방식: 셸 명령

shell

$p = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge'; if (-not (Test-Path -Path $p)) { New-Item -Path $p -Force | Out-Null }; New-ItemProperty -Path $p -Name 'DefaultJavaScriptJitSetting' -Value 2 -PropertyType DWord -Force | Out-Null

속성

운영 체제: 모두
태그: edgebrowsercis-l2
참고 자료: CIS Microsoft Edge Benchmark v5.0.0 - 1.4.4 Ensure 'Control use of JavaScript JIT' is set to 'Enabled: Do not allow any site to run JavaScript JIT'

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target edge --level 2