TMA-FIREFOX-1.1.7.1

Ensure 'TLS_RSA_WITH_3DES_EDE_CBC_SHA ' is set to 'Enabled'

高レベル 1自動firefox

説明

This policy settings controls the use of the TLS_RSA_WITH_3DES_EDE_CBC_SHA cipher suite. Cipher suites are a group of algorithms that help secure network connections. The recommended state for this setting is: Enabled. Rationale: The Triple Data Encryption Algorithm (TDEA) also known as Triple DES (3DES) was deprecated in 2019 by NIST. 3DES is now considered an insecure cipher suite and should not be used. 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\Mozilla\Firefox\DisabledCiphers:TLS_RSA_WITH_3DES_EDE_CBC_SHA (REG_DWORD); compliant when it is 1. Remediation writes 1 locally; in a domain set it through the ADMX so Group Policy does not revert it.

チェック方法

監査方法: Windows レジストリ

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\DisabledCiphers' -Name 'TLS_RSA_WITH_3DES_EDE_CBC_SHA' -ErrorAction SilentlyContinue).'TLS_RSA_WITH_3DES_EDE_CBC_SHA'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @(1) -contains [int64]$v)) { 'compliant' } else { "non-compliant: $v" }

期待される出力: compliant

修正方法

修正方法: シェルコマンド

shell

$p = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\DisabledCiphers'; if (-not (Test-Path -Path $p)) { New-Item -Path $p -Force | Out-Null }; New-ItemProperty -Path $p -Name 'TLS_RSA_WITH_3DES_EDE_CBC_SHA' -Value 1 -PropertyType DWord -Force | Out-Null

プロパティ

オペレーティングシステム: すべて
タグ: firefoxbrowsercis-l1
参照: CIS Mozilla Firefox ESR GPO Benchmark v1.0.0 - 1.1.7.1 Ensure 'TLS_RSA_WITH_3DES_EDE_CBC_SHA ' is set to 'Enabled'

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target firefox