Windows Common Log File System Driver 权限提升漏洞

漏洞信息

漏洞名称： Windows Common Log File System Driver 权限提升漏洞

漏洞编号：

• CVE： CVE-2025-29824

漏洞类型： 权限提升

漏洞等级： 严重

漏洞描述： Windows Common Log File System Driver（CLFS）是微软Windows操作系统中的一个核心组件，负责处理日志文件的创建、读取和写入操作。由于其深入系统内核的特性，CLFS驱动程序的漏洞可能对系统安全构成严重威胁。此次发现的CVE-2025-29824漏洞是一个权限提升漏洞，允许已经获得系统访问权限的攻击者通过利用CLFS驱动程序中的释放后使用（Use After Free）漏洞，进一步提升至SYSTEM权限。这种漏洞的利用通常不需要用户交互，且可以被自动化工具利用，因此在攻击链中具有极高的价值。攻击者利用此漏洞可以在受害系统上执行任意代码，包括但不限于安装恶意软件、窃取敏感信息、破坏系统完整性等。此外，该漏洞已被活跃的勒索软件组织Storm-2460利用，用于部署RansomEXX勒索软件，对多个行业的目标进行攻击，包括美国的IT/房地产、委内瑞拉的金融、西班牙的软件和沙特阿拉伯的零售业。微软已在2025年4月的补丁星期二发布了修复此漏洞的安全更新。

产品厂商： Microsoft

产品名称： Windows Common Log File System Driver

来源： https://github.com/AfanPan/CVE-2025-29824-Exploit

类型： CVE-2025:github search

仓库文件

• README.md
• cve-2025-29824.sln
• cve-2025-29824.vcxproj
• cve-2025-29824.vcxproj.user
• exploit.cpp
• shellcode.asm

来源概述

🚨 CVE-2025-29824 Exploit: PipeMagic Ransomware Chain

📌 Critical Vulnerability Overview

Privilege Escalation Flaw in Windows CLFS → SYSTEM Privilege Hijack
Exploited in Active Ransomware Attacks by Storm-2460 Threat Group

🖥️ Affected Systems

Expand System List

🧩 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
   Unknown vector → Compromised sites via certutil

2. PipeMagic Loader
   Modular trojan (active since 2022)

3. Kernel Exploit
   // Core vulnerability logic
   CLFS_Trigger_Corruption();
   RtlSetAllBits(exploit_process_token, 0xFFFFFFFF);

4. Post-Exploitation
   • LSASS memory dump → Credential theft

   • File encryption with .random_extension

   • RansomEXX TOR note deployment

🌩️ Attack Attribution & History

CVE Year Ransomware Vector

CVE-2023-28252 2023 Nokoyawa PipeMagic → CLFS

CVE-2025-24983 2025 Unknown PipeMagic → Win32K

CVE-2025-29824 2025 RansomEXX 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:

“Attacks on IT/real estate (US), finance (Venezuela),

software (Spain), retail (Saudi Arabia)”

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