关于Microsoft Remote Registry Service特权提升漏洞（CVE-2024-43532）的安全预警

一、 基本情况

Microsoft Remote Registry Service（远程注册表服务）是Windows 操作系统中的一个服务，允许远程用户通过网络访问和修改计算机上的注册表。

二、 漏洞描述

Microsoft Remote Registry Service特权提升漏洞（CVE-2024-43532）的技术细节及PoC在互联网上公开，该漏洞的CVSS评分为8.8。

该漏洞源于Microsoft Remote Registry客户端在SMB传输不可用的情况下回退到 RPC（远程过程调用）认证时，切换到较旧的协议（如TCP/IP）并采用弱认证级别（RPC_C_AUTHN_LEVEL_CONNECT），该级别无法验证通信的完整性或来源，攻击者可利用该缺陷，通过拦截NTLM 身份验证握手并将其中继到其他服务（如ADCS），实现 NTLM 中继攻击，进而可能创建域管理员账户或接管整个域。

三、 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 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 11 Version 24H2 for x64-based Systems

Windows 11 Version 24H2 for ARM64-based Systems

Windows Server 2022, 23H2 Edition (Server Core installation)

Windows 11 Version 23H2 for x64-based Systems

Windows 11 Version 23H2 for ARM64-based Systems

Windows 10 Version 22H2 for 32-bit Systems

Windows 10 Version 22H2 for ARM64-based Systems

Windows 10 Version 22H2 for x64-based Systems

Windows 11 Version 22H2 for x64-based Systems

Windows 11 Version 22H2 for ARM64-based Systems

Windows 10 Version 21H2 for x64-based Systems

Windows 10 Version 21H2 for ARM64-based Systems

Windows 10 Version 21H2 for 32-bit Systems

Windows 11 version 21H2 for ARM64-based Systems

Windows 11 version 21H2 for x64-based Systems

Windows Server 2022 (Server Core installation)

Windows Server 2022

Windows Server 2019 (Server Core installation)

Windows Server 2019

Windows 10 Version 1809 for x64-based Systems

Windows 10 Version 1809 for 32-bit Systems

四、 修复建议

目前该漏洞已在微软10月发布的安全更新中修复，受影响用户可及时修复。

下载链接：

https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2024-43532

Windows中可通过控制面板-程序和功能-查看已安装的更新查询当前系统已安装的更新，如果系统尚未安装相应补丁，可手动下载安装。

五、 参考链接

https://www.akamai.com/blog/security-research/winreg-relay-vulnerability

https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2024-43532