Ensure 'Enable TLS Encrypted ClientHello' Is Enabled

高级别 1自动化chrome

说明

This setting controls the defaults for using Encrypted ClientHello (ECH). ECH is an extension to TLS and encrypts the initial handshake with a website that can only be decrypted by that website. Google Chrome may, or may not, use ECH based on 3 factors: sever support, HTTPS DNS record availability, or rollout status. Rationale: Previously all handshakes were in the open and could expose sensitive information like the name of the website that you are connecting to. 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\Google\Chrome:EncryptedClientHelloEnabled (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.

检查方式

审计方法: Windows 注册表

registry

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

预期输出: compliant

修复方式

修复方法: Shell 命令

shell

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

属性

操作系统: 任意
标签: chromebrowsercis-l1
参考: CIS Google Chrome Benchmark v3.0.0 - 2.22 Ensure 'Enable TLS Encrypted ClientHello' Is Enabled

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target chrome