CVE-2025-29824 PoC — Windows Common Log File System Driver Elevation of Privilege Vulnerability

Source

Associated Vulnerability

Description

Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

Readme

🚨 CVE-2025-29824 Exploit: PipeMagic Ransomware Chain

📌 Critical Vulnerability Overview

<span style="color: #ff5555; font-weight: bold">Privilege Escalation Flaw in Windows CLFS</span> → SYSTEM Privilege Hijack  
Exploited in Active Ransomware Attacks by <span style="background-color: #222222; color: #ff9966; padding: 2px 6px">Storm-2460 Threat Group</span>

🖥️ Affected Systems

<strong>Expand System List</strong>

🧩 Exploit Chain Workflow

graph LR
    A[Initial Access] -->|certutil| B[Malicious MSBuild Payload]
    B --> C[PipeMagic Trojan]
    C -->|CVE-2025-29824| D[CLFS Kernel Exploit]
    D -->|RtlSetAllBits| E[Token Overwrite 0xFFFFFFFF]
    E --> F[SYSTEM Privileges]
    F --> G[LSASS Dumping]
    G --> H[Ransomware Deployment]


1. Initial Access  
   <small style="color: #aaaaaa">Unknown vector → Compromised sites via <code>certutil</code></small>
2. PipeMagic Loader  
   <small style="color: #aaaaaa">Modular trojan (active since 2022)</small>
3. Kernel Exploit  
   // Core vulnerability logic
   CLFS_Trigger_Corruption();
   RtlSetAllBits(exploit_process_token, 0xFFFFFFFF);
   
4. Post-Exploitation  
   • <span style="color: #ff5555">LSASS memory dump</span> → Credential theft

   • File encryption with <span style="background-color: #333333; color: #55ffff; padding: 2px 4px">.random_extension</span>

   • <span style="color: #ff55ff">RansomEXX</span> TOR note deployment

🌩️ Attack Attribution & History

CVE Year Ransomware Vector

CVE-2023-28252 2023 Nokoyawa PipeMagic → CLFS

CVE-2025-24983 2025 Unknown PipeMagic → Win32K

<span style="color: #ffff55">CVE-2025-29824</span> 2025 <span style="color: #ff55ff">RansomEXX</span> PipeMagic → CLFS

Targeted Industries:  
🏢 US IT/Real Estate • 🇻🇪 Venezuela Finance • 🇪🇸 Spanish Software • 🇸🇦 Saudi Retail

🛡️ Mitigation Requirements

+ Patch Applied: MS April 2025 Patch Tuesday
! Detection Priority: certutil -> MSBuild activity
- Block Pattern: RtlSetAllBits token manipulation


Win11 24H2 Immunity:  
NtQuerySystemInformation restricted to SeDebugPrivilege accounts

⚠️ Legal & Ethical Warning  

This exploit is published FOR RESEARCH PURPOSES ONLY.  

Active ransomware deployment confirmed in:

<div style="border-left: 3px solid #ff5555; padding-left: 10px">

"Attacks on IT/real estate (US), finance (Venezuela),<br> 

software (Spain), retail (Saudi Arabia)"

</div>

https://thehackernews.com/2025/04/pipemagic-trojan-exploits-windows-zero.html

!https://img.shields.io/badge/RISK-CRITICAL-red 
!https://img.shields.io/badge/PATCHED-April_2025-green 
!https://img.shields.io/badge/SCOPE-Win7→Server_2025-orange

File Snapshot

 [4.0K]  /data/pocs/8910ce4749e94598d02a9110573b865157d960fc
├── [1.0K]  cve-2025-29824.sln
├── [4.9K]  cve-2025-29824.vcxproj
├── [ 168]  cve-2025-29824.vcxproj.user
├── [4.5K]  exploit.cpp
├── [2.6K]  README.md
└── [ 526]  shellcode.asm

0 directories, 6 files

Remarks