TMA-FIREFOX-1.1.7.1

Ensure 'TLS_RSA_WITH_3DES_EDE_CBC_SHA ' is set to 'Enabled'

AltaNivel 1Automatizadafirefox

Descripción

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.

Cómo se verifica

Método de auditoría: Registro de Windows

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" }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Comando de shell

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

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: firefoxbrowsercis-l1
Referencia: 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'

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target firefox