近日，奇安信CERT监测到GITHUB上有安全研究人员公布了Windows Print Spooler远程代码执行漏洞（CVE-2021-1675）POC，Windows Print Spooler是打印后台处理服务，即管理所有本地和网络打印队列及控制所有打印工作，Windows Print Spooler 存在权限提升漏洞，经过身份认证的攻击者可利用此漏洞使 Spooler 服务加载恶意 DLL，从而获取权限提升。

POC已扩散，EXP已公开，官方已有可更新版本，鉴于漏洞危害较大，建议用户及时安装更新补丁。

当前漏洞状态

漏洞描述

Windows Print Spooler是打印后台处理服务，即管理所有本地和网络打印队列及控制所有打印工作。Windows Print Spooler 存在权限提升漏洞，经过身份认证的攻击者可利用此漏洞使 Spooler 服务加载恶意 DLL，从而获取权限提升。利用此漏洞需身份认证，攻击者可通过多种方式获得身份认证信息。在域环境中合适的条件下，未经身份验证的远程攻击者可利用该漏洞以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。

POC已扩散，EXP已公开，官方已有可更新版本，鉴于漏洞危害较大，建议用户及时安装更新补丁。

风险等级

奇安信 CERT风险评级为：高危

风险等级：蓝色（一般事件）

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

处置建议

1、安装补丁

链接地址：

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1675#securityUpdates

参考资料

[1]https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1675

时间线

2021年6月29日，奇安信 CERT发布安全风险通告

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