关联漏洞
标题：
Microsoft Windows Update 后置链接漏洞
(CVE-2025-48799)
描述：Microsoft Windows Update是美国微软（Microsoft）公司的一个程序更新服务。 Microsoft Windows Update存在后置链接漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 21H2 for 32-bit Systems,Windows 10
介绍
# Description
This is PoC for CVE-2025-48799, an elevation of privilege vulnerability in Windows Update service.
This vulnability affects windows clients (win11/win10) with at least 2 hard drives. When machine have multiple hard drives it is possible to change location where new content is saved using the Storage Sense. If location for new applications is changed to secondary drive, during the installation of new application the wuauserv service will perform arbitrary folder deletion without checking for symbolic links (if file is encountered the service will check final path using GetFinalPathByHandle) which leads to LPE.
This PoC utilise method (and some code) descibed in ZDI blog post: https://www.zerodayinitiative.com/blog/2022/3/16/abusing-arbitrary-file-deletes-to-escalate-privilege-and-other-great-tricks
## PoC
https://github.com/user-attachments/assets/5e8b2a59-b787-4ba7-a6dc-1c71a9b3ba12
文件快照
[4.0K] /data/pocs/4e0d47ece33258cc51528a7848b6199d8323bede
├── [ 916] README.md
└── [4.0K] WinUpdateEoP
├── [558K] 5eeabb3.rbs
├── [4.2K] def.h
├── [4.4K] FileOplock.cpp
├── [1.0K] FileOplock.h
├── [ 16K] FileOrFolderDelete.cpp
├── [ 10K] main.cpp
├── [184K] Msi_EoP.msi
├── [ 440] resource.aps
├── [ 300] resource.h
├── [2.1K] resource.rc
├── [1.4K] WinUpdateEoP.sln
├── [6.8K] WinUpdateEoP.vcxproj
├── [1.6K] WinUpdateEoP.vcxproj.filters
└── [ 168] WinUpdateEoP.vcxproj.user
1 directory, 15 files
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