一、漏洞詳情

Print Spooler是Windows系統中用于管理打印相關事務的服務。

該漏洞在域環境中合適的條件下，無需任何用戶交互，未經身份驗證的遠程攻擊者就可以利用該漏洞以SYSTEM權限在域控制器上執行任意代碼，從而獲得整個域的控制權。

建議受影響用戶及時更新漏洞補丁進行防護，做好資產自查以及預防工作，以免遭受黑客攻擊。

二、影響范圍

Windows Server 2012 R2 (Server Core installation)

Windows Server 2012 R2

Windows Server 2012 (Server Core installation)

Windows Server 2012

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

Windows Server 2008 R2 for x64-based Systems Service Pack 1

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)

Windows Server 2008 for x64-based Systems Service Pack 2

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)

Windows Server 2008 for 32-bit Systems Service Pack 2

Windows RT 8.1

Windows 8.1 for x64-based systems

Windows 8.1 for 32-bit systems

Windows 7 for x64-based Systems Service Pack 1

Windows 7 for 32-bit Systems Service Pack 1

Windows Server 2016  (Server Core installation)

Windows Server 2016

Windows 10 Version 1607 for x64-based Systems

Windows 10 Version 1607 for 32-bit Systems

Windows 10 for x64-based Systems

Windows 10 for 32-bit Systems

Windows Server, version 20H2 (Server Core Installation)

Windows 10 Version 20H2 for ARM64-based Systems

Windows 10 Version 20H2 for 32-bit Systems

Windows 10 Version 20H2 for x64-based Systems

Windows Server, version 2004 (Server Core installation)

Windows 10 Version 2004 for x64-based Systems

Windows 10 Version 2004 for ARM64-based Systems

Windows 10 Version 2004 for 32-bit Systems

Windows 10 Version 21H1 for 32-bit Systems

Windows 10 Version 21H1 for ARM64-based Systems

Windows 10 Version 21H1 for x64-based Systems

Windows 10 Version 1909 for ARM64-based Systems

Windows 10 Version 1909 for x64-based Systems

Windows 10 Version 1909 for 32-bit Systems

Windows Server 2019  (Server Core installation)

Windows Server 2019

Windows 10 Version 1809 for ARM64-based Systems

Windows 10 Version 1809 for x64-based Systems

Windows 10 Version 1809 for 32-bit Systems

三、修復建議

1.官方建議：

目前官方已發布漏洞修復補丁，建議受影響用戶盡快更新漏洞補丁。

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-1675

2. 臨時防護措施：

若相關用戶暫時無法進行補丁更新，可通過禁用Print Spooler服務來進行緩解：

1）在服務應用（services.msc）中找到Print Spooler服務。

2）停止運行服務，同時將“啟動類型”修改為“禁用”。