Introduzione
Microsoft ha sviluppato uno script di PowerShell di esempio che consente di automatizzare l'aggiornamento di Ambiente ripristino Windows nei dispositivi distribuiti per risolvere le vulnerabilità di protezione in CVE-2024-20666.
Script di PowerShell di esempio
Lo script di PowerShell di esempio è stato sviluppato dal team di prodotto Microsoft per automatizzare l'aggiornamento delle immagini WinRE nei dispositivi Windows 10 e Windows 11 supportati. Eseguire lo script con credenziali di amministratore in PowerShell nei dispositivi interessati. Sono disponibili due script, quello da usare dipende dalla versione di Windows in esecuzione. Usare la versione appropriata per il proprio ambiente.
PatchWinREScript_2004plus.ps1 (scelta consigliata)
Questo script è destinato a Windows 10, versione 2004 e versioni successive, tra cui Windows 11. È consigliabile usare questa versione dello script, perché è più affidabile ma usa le funzionalità disponibili solo in Windows 10, versione 2004 e versioni successive.
################################################################################################
#
# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
#
# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
################################################################################################
Param (
[Parameter(HelpMessage="Work Directory for patch WinRE")][string]$workDir="",
[Parameter(Mandatory=$true,HelpMessage="Path of target package")][string]$packagePath
)
# ------------------------------------
# Help functions
# ------------------------------------
# Log message
function LogMessage([string]$message)
{
$message = "$([DateTime]::Now) - $message"
Write-Host $message
}
function IsTPMBasedProtector
{
$DriveLetter = $env:SystemDrive
LogMessage("Checking BitLocker status")
$BitLocker = Get-WmiObject -Namespace "Root\cimv2\Security\MicrosoftVolumeEncryption" -Class "Win32_EncryptableVolume" -Filter "DriveLetter = '$DriveLetter'"
if(-not $BitLocker)
{
LogMessage("No BitLocker object")
return $False
}
$protectionEnabled = $False
switch ($BitLocker.GetProtectionStatus().protectionStatus){
("0"){
LogMessage("Unprotected")
break
}
("1"){
LogMessage("Protected")
$protectionEnabled = $True
break
}
("2"){
LogMessage("Uknown")
break
}
default{
LogMessage("NoReturn")
break
}
}
if (!$protectionEnabled)
{
LogMessage("Bitlocker isn’t enabled on the OS")
return $False
}
$ProtectorIds = $BitLocker.GetKeyProtectors("0").volumekeyprotectorID
$return = $False
foreach ($ProtectorID in $ProtectorIds){
$KeyProtectorType = $BitLocker.GetKeyProtectorType($ProtectorID).KeyProtectorType
switch($KeyProtectorType){
"1"{
LogMessage("Trusted Platform Module (TPM)")
$return = $True
break
}
"4"{
LogMessage("TPM And PIN")
$return = $True
break
}
"5"{
LogMessage("TPM And Startup Key")
$return = $True
break
}
"6"{
LogMessage("TPM And PIN And Startup Key")
$return = $True
break
}
default {break}
}#endSwitch
}#EndForeach
if ($return)
{
LogMessage("Has TPM-based protector")
}
else
{
LogMessage("Doesn't have TPM-based protector")
}
return $return
}
function SetRegistrykeyForSuccess
{
reg add HKLM\SOFTWARE\Microsoft\PushButtonReset /v WinREPathScriptSucceed_CVE_2024_20666 /d 1 /f
}
function TargetfileVersionExam([string]$mountDir)
{
# Exam target binary
$targetBinary=$mountDir + "\Windows\System32\winload.efi"
LogMessage("TargetFile: " + $targetBinary)
$realNTVersion = [Diagnostics.FileVersionInfo]::GetVersionInfo($targetBinary).ProductVersion
$versionString = "$($realNTVersion.Split('.')[0]).$($realNTVersion.Split('.')[1])"
$fileVersion = $($realNTVersion.Split('.')[2])
$fileRevision = $($realNTVersion.Split('.')[3])
LogMessage("Target file version: " + $realNTVersion)
if (!($versionString -eq "10.0"))
{
LogMessage("Not Windows 10 or later")
return $False
}
$hasUpdated = $False
#Windows 10, version 1507 10240.20400
#Windows 10, version 1607 14393.6610
#Windows 10, version 1809 17763.5322
#Windows 10, version 2004 1904X.3920
#Windows 11, version 21H2 22000.2710
#Windows 11, version 22H2 22621.3000
switch ($fileVersion) {
"10240" {
LogMessage("Windows 10, version 1507")
if ($fileRevision -ge 20400)
{
LogMessage("Windows 10, version 1507 with revision " + $fileRevision + " >= 20400, updates have been applied")
$hasUpdated = $True
}
break
}
"14393" {
LogMessage("Windows 10, version 1607")
if ($fileRevision -ge 6610)
{
LogMessage("Windows 10, version 1607 with revision " + $fileRevision + " >= 6610, updates have been applied")
$hasUpdated = $True
}
break
}
"17763" {
LogMessage("Windows 10, version 1809")
if ($fileRevision -ge 5322)
{
LogMessage("Windows 10, version 1809 with revision " + $fileRevision + " >= 5322, updates have been applied")
$hasUpdated = $True
}
break
}
"19041" {
LogMessage("Windows 10, version 2004")
if ($fileRevision -ge 3920)
{
LogMessage("Windows 10, version 2004 with revision " + $fileRevision + " >= 3920, updates have been applied")
$hasUpdated = $True
}
break
}
"22000" {
LogMessage("Windows 11, version 21H2")
if ($fileRevision -ge 2710)
{
LogMessage("Windows 11, version 21H2 with revision " + $fileRevision + " >= 2710, updates have been applied")
$hasUpdated = $True
}
break
}
"22621" {
LogMessage("Windows 11, version 22H2")
if ($fileRevision -ge 3000)
{
LogMessage("Windows 11, version 22H2 with revision " + $fileRevision + " >= 3000, updates have been applied")
$hasUpdated = $True
}
break
}
default {
LogMessage("Warning: unsupported OS version")
}
}
return $hasUpdated
}
function PatchPackage([string]$mountDir, [string]$packagePath)
{
# Exam target binary
$hasUpdated =TargetfileVersionExam($mountDir)
if ($hasUpdated)
{
LogMessage("The update has already been added to WinRE")
SetRegistrykeyForSuccess
return $False
}
# Add package
LogMessage("Apply package:" + $packagePath)
Dism /Add-Package /Image:$mountDir /PackagePath:$packagePath
if ($LASTEXITCODE -eq 0)
{
LogMessage("Successfully applied the package")
}
else
{
LogMessage("Applying the package failed with exit code: " + $LASTEXITCODE)
return $False
}
# Cleanup recovery image
LogMessage("Cleanup image")
Dism /image:$mountDir /cleanup-image /StartComponentCleanup /ResetBase
if ($LASTEXITCODE -eq 0)
{
LogMessage("Cleanup image succeed")
}
else
{
LogMessage("Cleanup image failed: " + $LASTEXITCODE)
return $False
}
return $True
}
# ------------------------------------
# Execution starts
# ------------------------------------
# Check breadcrumb
if (Test-Path HKLM:\Software\Microsoft\PushButtonReset)
{
$values = Get-ItemProperty -Path HKLM:\Software\Microsoft\PushButtonReset
if (!(-not $values))
{
if (Get-Member -InputObject $values -Name WinREPathScriptSucceed_CVE_2024_20666)
{
$value = Get-ItemProperty -Path HKLM:\Software\Microsoft\PushButtonReset -Name WinREPathScriptSucceed_CVE_2024_20666
if ($value.WinREPathScriptSucceed_CVE_2024_20666 -eq 1)
{
LogMessage("This script was previously run successfully")
exit 1
}
}
}
}
if ([string]::IsNullorEmpty($workDir))
{
LogMessage("No input for mount directory")
LogMessage("Use default path from temporary directory")
$workDir = [System.IO.Path]::GetTempPath()
}
LogMessage("Working Dir: " + $workDir)
$name = "9f8131ee-878f-4525-bf31-e446aac3016a_Mount"
$mountDir = Join-Path $workDir $name
LogMessage("MountDir: " + $mountdir)
# Delete existing mount directory
if (Test-Path $mountDir)
{
LogMessage("Mount directory: " + $mountDir + " already exists")
LogMessage("Try to unmount it")
Dism /unmount-image /mountDir:$mountDir /discard
if (!($LASTEXITCODE -eq 0))
{
LogMessage("Warning: unmount failed: " + $LASTEXITCODE)
}
LogMessage("Delete existing mount direcotry " + $mountDir)
Remove-Item $mountDir -Recurse
}
# Create mount directory
LogMessage("Create mount directory " + $mountDir)
New-Item -Path $mountDir -ItemType Directory
# Set ACL for mount directory
LogMessage("Set ACL for mount directory")
icacls $mountDir /inheritance:r
icacls $mountDir /grant:r SYSTEM:"(OI)(CI)(F)"
icacls $mountDir /grant:r *S-1-5-32-544:"(OI)(CI)(F)"
# Mount WinRE
LogMessage("Mount WinRE:")
reagentc /mountre /path $mountdir
if ($LASTEXITCODE -eq 0)
{
# Patch WinRE
if (PatchPackage -mountDir $mountDir -packagePath $packagePath)
{
$hasUpdated = TargetfileVersionExam($mountDir)
if ($hasUpdated)
{
LogMessage("After patch, find expected version for target file")
}
else
{
LogMessage("Warning: After applying the patch, unexpected version found for the target file")
}
LogMessage("Patch succeed, unmount to commit change")
Dism /unmount-image /mountDir:$mountDir /commit
if (!($LASTEXITCODE -eq 0))
{
LogMessage("Unmount failed: " + $LASTEXITCODE)
exit 1
}
else
{
if ($hasUpdated)
{
if (IsTPMBasedProtector)
{
# Disable WinRE and re-enable it to let new WinRE be trusted by BitLocker
LogMessage("Disable WinRE")
reagentc /disable
LogMessage("Re-enable WinRE")
reagentc /enable
reagentc /info
}
# Leave a breadcrumb indicates the script has succeed
SetRegistrykeyForSuccess
}
}
}
else
{
LogMessage("Patch failed or is not applicable, discard unmount")
Dism /unmount-image /mountDir:$mountDir /discard
if (!($LASTEXITCODE -eq 0))
{
LogMessage("Unmount failed: " + $LASTEXITCODE)
exit 1
}
}
}
else
{
LogMessage("Mount failed: " + $LASTEXITCODE)
}
# Cleanup Mount directory in the end
LogMessage("Delete mount direcotry")
Remove-Item $mountDir -Recurse
PatchWinREScript_General.ps1
Questo script è per Windows 10, versione 1909 e versioni precedenti, ma viene eseguito in tutte le versioni di Windows 10 e Windows 11.
################################################################################################
#
# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
#
# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
################################################################################################
Param (
[Parameter(HelpMessage="Work Directory for patch WinRE")][string]$workDir="",
[Parameter(Mandatory=$true,HelpMessage="Path of target package")][string]$packagePath
)
# ------------------------------------
# Help functions
# ------------------------------------
# Log message
function LogMessage([string]$message)
{
$message = "$([DateTime]::Now) - $message"
Write-Host $message
}
function IsTPMBasedProtector
{
$DriveLetter = $env:SystemDrive
LogMessage("Checking BitLocker status")
$BitLocker = Get-WmiObject -Namespace "Root\cimv2\Security\MicrosoftVolumeEncryption" -Class "Win32_EncryptableVolume" -Filter "DriveLetter = '$DriveLetter'"
if(-not $BitLocker)
{
LogMessage("No BitLocker object")
return $False
}
$protectionEnabled = $False
switch ($BitLocker.GetProtectionStatus().protectionStatus){
("0"){
LogMessage("Unprotected")
break
}
("1"){
LogMessage("Protected")
$protectionEnabled = $True
break
}
("2"){
LogMessage("Uknown")
break
}
default{
LogMessage("NoReturn")
break
}
}
if (!$protectionEnabled)
{
LogMessage("Bitlocker isn’t enabled on the OS")
return $False
}
$ProtectorIds = $BitLocker.GetKeyProtectors("0").volumekeyprotectorID
$return = $False
foreach ($ProtectorID in $ProtectorIds){
$KeyProtectorType = $BitLocker.GetKeyProtectorType($ProtectorID).KeyProtectorType
switch($KeyProtectorType){
"1"{
LogMessage("Trusted Platform Module (TPM)")
$return = $True
break
}
"4"{
LogMessage("TPM And PIN")
$return = $True
break
}
"5"{
LogMessage("TPM And Startup Key")
$return = $True
break
}
"6"{
LogMessage("TPM And PIN And Startup Key")
$return = $True
break
}
default {break}
}#endSwitch
}#EndForeach
if ($return)
{
LogMessage("Has TPM-based protector")
}
else
{
LogMessage("Doesn't have TPM-based protector")
}
return $return
}
function SetRegistrykeyForSuccess
{
reg add HKLM\SOFTWARE\Microsoft\PushButtonReset /v WinREPathScriptSucceed_CVE_2024_20666 /d 1 /f
}
function TargetfileVersionExam([string]$mountDir)
{
# Exam target binary
$targetBinary=$mountDir + "\Windows\System32\winload.efi"
LogMessage("TargetFile: " + $targetBinary)
$realNTVersion = [Diagnostics.FileVersionInfo]::GetVersionInfo($targetBinary).ProductVersion
$versionString = "$($realNTVersion.Split('.')[0]).$($realNTVersion.Split('.')[1])"
$fileVersion = $($realNTVersion.Split('.')[2])
$fileRevision = $($realNTVersion.Split('.')[3])
LogMessage("Target file version: " + $realNTVersion)
if (!($versionString -eq "10.0"))
{
LogMessage("Not Windows 10 or later")
return $False
}
$hasUpdated = $False
#Windows 10, version 1507 10240.20400
#Windows 10, version 1607 14393.6610
#Windows 10, version 1809 17763.5322
#Windows 10, version 2004 1904X.3920
#Windows 11, version 21H2 22000.2710
#Windows 11, version 22H2 22621.3000
switch ($fileVersion) {
"10240" {
LogMessage("Windows 10, version 1507")
if ($fileRevision -ge 20400)
{
LogMessage("Windows 10, version 1507 with revision " + $fileRevision + " >= 20400, updates have been applied")
$hasUpdated = $True
}
break
}
"14393" {
LogMessage("Windows 10, version 1607")
if ($fileRevision -ge 6610)
{
LogMessage("Windows 10, version 1607 with revision " + $fileRevision + " >= 6610, updates have been applied")
$hasUpdated = $True
}
break
}
"17763" {
LogMessage("Windows 10, version 1809")
if ($fileRevision -ge 5322)
{
LogMessage("Windows 10, version 1809 with revision " + $fileRevision + " >= 5322, updates have been applied")
$hasUpdated = $True
}
break
}
"19041" {
LogMessage("Windows 10, version 2004")
if ($fileRevision -ge 3920)
{
LogMessage("Windows 10, version 2004 with revision " + $fileRevision + " >= 3920, updates have been applied")
$hasUpdated = $True
}
break
}
"22000" {
LogMessage("Windows 11, version 21H2")
if ($fileRevision -ge 2710)
{
LogMessage("Windows 11, version 21H2 with revision " + $fileRevision + " >= 2710, updates have been applied")
$hasUpdated = $True
}
break
}
"22621" {
LogMessage("Windows 11, version 22H2")
if ($fileRevision -ge 3000)
{
LogMessage("Windows 11, version 22H2 with revision " + $fileRevision + " >= 3000, updates have been applied")
$hasUpdated = $True
}
break
}
default {
LogMessage("Warning: unsupported OS version")
}
}
return $hasUpdated
}
function PatchPackage([string]$mountDir, [string]$packagePath)
{
# Exam target binary
$hasUpdated = TargetfileVersionExam($mountDir)
if ($hasUpdated)
{
LogMessage("The update has already been added to WinRE")
SetRegistrykeyForSuccess
return $False
}
# Add package
LogMessage("Apply package:" + $packagePath)
Dism /Add-Package /Image:$mountDir /PackagePath:$packagePath
if ($LASTEXITCODE -eq 0)
{
LogMessage("Successfully applied the package")
}
else
{
LogMessage("Applying the package failed with exit code: " + $LASTEXITCODE)
return $False
}
# Cleanup recovery image
LogMessage("Cleanup image")
Dism /image:$mountDir /cleanup-image /StartComponentCleanup /ResetBase
if ($LASTEXITCODE -eq 0)
{
LogMessage("Cleanup image succeed")
}
else
{
LogMessage("Cleanup image failed: " + $LASTEXITCODE)
return $False
}
return $True
}
# ------------------------------------
# Execution starts
# ------------------------------------
# Check breadcrumb
if (Test-Path HKLM:\Software\Microsoft\PushButtonReset)
{
$values = Get-ItemProperty -Path HKLM:\Software\Microsoft\PushButtonReset
if (!(-not $values))
{
if (Get-Member -InputObject $values -Name WinREPathScriptSucceed_CVE_2024_20666)
{
$value = Get-ItemProperty -Path HKLM:\Software\Microsoft\PushButtonReset -Name WinREPathScriptSucceed_CVE_2024_20666
if ($value.WinREPathScriptSucceed_CVE_2024_20666 -eq 1)
{
LogMessage("This script was previously run successfully")
exit 1
}
}
}
}
# Get WinRE info
$WinREInfo = Reagentc /info
$findLocation = $False
foreach ($line in $WinREInfo)
{
$params = $line.Split(':')
if ($params.count -le 1)
{
continue
}
if ($params[1].Lenght -eq 0)
{
continue
}
$content = $params[1].Trim()
if ($content.Lenght -eq 0)
{
continue
}
$index = $content.IndexOf("\\?\")
if ($index -ge 0)
{
LogMessage("Find \\?\ at " + $index + " for [" + $content + "]")
$WinRELocation = $content
$findLocation = $True
}
}
if (!$findLocation)
{
LogMessage("WinRE Disabled")
exit 1
}
LogMessage("WinRE Enabled. WinRE location:" + $WinRELocation)
$WinREFile = $WinRELocation + "\winre.wim"
if ([string]::IsNullorEmpty($workDir))
{
LogMessage("No input for mount directory")
LogMessage("Use default path from temporary directory")
$workDir = [System.IO.Path]::GetTempPath()
}
LogMessage("Working Dir: " + $workDir)
$name = "9f8131ee-878f-4525-bf31-e446aac3016a_Mount"
$mountDir = Join-Path $workDir $name
LogMessage("MountDir: " + $mountdir)
# Delete existing mount directory
if (Test-Path $mountDir)
{
LogMessage("Mount directory: " + $mountDir + " already exists")
LogMessage("Try to unmount it")
Dism /unmount-image /mountDir:$mountDir /discard
if (!($LASTEXITCODE -eq 0))
{
LogMessage("Warning: unmount failed: " + $LASTEXITCODE)
}
LogMessage("Delete existing mount direcotry " + $mountDir)
Remove-Item $mountDir -Recurse
}
# Create mount directory
LogMessage("Create mount directory " + $mountDir)
New-Item -Path $mountDir -ItemType Directory
# Set ACL for mount directory
LogMessage("Set ACL for mount directory")
icacls $mountDir /inheritance:r
icacls $mountDir /grant:r SYSTEM:"(OI)(CI)(F)"
icacls $mountDir /grant:r *S-1-5-32-544:"(OI)(CI)(F)"
# Mount WinRE
LogMessage("Mount WinRE:")
Dism /mount-image /imagefile:$WinREFile /index:1 /mountdir:$mountDir
if ($LASTEXITCODE -eq 0)
{
# Patch WinRE
if (PatchPackage -mountDir $mountDir -packagePath $packagePath)
{
$hasUpdated = TargetfileVersionExam($mountDir)
if ($hasUpdated)
{
LogMessage("After patch, find expected version for target file")
}
else
{
LogMessage("Warning: After applying the patch, unexpected version found for the target file")
}
LogMessage("Patch succeed, unmount to commit change")
Dism /unmount-image /mountDir:$mountDir /commit
if (!($LASTEXITCODE -eq 0))
{
LogMessage("Unmount failed: " + $LASTEXITCODE)
exit 1
}
else
{
if ($hasUpdated)
{
if (IsTPMBasedProtector)
{
# Disable WinRE and re-enable it to let new WinRE be trusted by BitLocker
LogMessage("Disable WinRE")
reagentc /disable
LogMessage("Re-enable WinRE")
reagentc /enable
reagentc /info
}
# Leave a breadcrumb indicates the script has succeed
SetRegistrykeyForSuccess
}
}
}
else
{
LogMessage("Patch failed or is not applicable, discard unmount")
Dism /unmount-image /mountDir:$mountDir /discard
if (!($LASTEXITCODE -eq 0))
{
LogMessage("Unmount failed: " + $LASTEXITCODE)
exit 1
}
}
}
else
{
LogMessage("Mount failed: " + $LASTEXITCODE)
}
# Cleanup Mount directory in the end
LogMessage("Delete mount direcotry")
Remove-Item $mountDir -Recurse
Altre informazioni
Dopo l'avvio del dispositivo nella versione in esecuzione di Windows installata nel dispositivo, lo script eseguirà i passaggi seguenti:
-
Montare l'immagine WinRE esistente (WINRE. WIM).
-
Aggiornare l'immagine WinRE con il pacchetto di aggiornamento dinamico del sistema operativo sicuro specificato (Aggiornamento compatibilità) disponibile nel catalogo di Windows Update. È consigliabile usare l'aggiornamento dinamico del sistema operativo sicuro più recente disponibile per la versione di Windows installata nel dispositivo.
-
Smontare l'immagine WinRE.
-
Se la protezione BitLocker TPM è presente, riconfigura WinRE per il servizio BitLocker.
Importante Questo passaggio non è presente nella maggior parte degli script di terze parti per l'applicazione degli aggiornamenti all'immagine WinRE.
uso
Allo script possono essere passati i seguenti parametri:
|
Parametro |
Descrizione |
|---|---|
|
Workdir |
>facoltativo< Specifica lo spazio di lavoro utilizzato per patch winRE. Se non è specificato, lo script userà la cartella temp predefinita per il dispositivo. |
|
packagePath |
<obbligatorio> Specifica il percorso e il nome del pacchetto di aggiornamento dinamico del sistema operativo specifico dell'architettura del sistema operativo e specifico dell'architettura del processore da utilizzare per aggiornare l'immagine WinRE.Nota Può trattarsi di un percorso locale o un percorso UNC remoto, ma l'aggiornamento dinamico del sistema operativo sicuro deve essere scaricato e disponibile per l'uso dello script. Esempio: |
