一、漏洞详情

Print Spooler是Windows系统中用于管理打印相关事务的服务。

该漏洞在域环境中合适的条件下，无需任何用户交互，未经身份验证的远程攻击者就可以利用该漏洞以SYSTEM权限在域控制器上执行任意代码，从而获得整个域的控制权。

建议受影响用户及时更新漏洞补丁进行防护，做好资产自查以及预防工作，以免遭受黑客攻击。

二、影响范围

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、修复建议

1.官方建议：

目前官方已发布漏洞修复补丁，建议受影响用户尽快更新漏洞补丁。

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

2. 临时防护措施：

若相关用户暂时无法进行补丁更新，可通过禁用Print Spooler服务来进行缓解：

1）在服务应用（services.msc）中找到Print Spooler服务。

2）停止运行服务，同时将“启动类型”修改为“禁用”。