📄 Description (English)
Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability — Microsoft Windows Common Log File System (CLFS) driver contains an unspecified vulnerability that allows for privilege escalation.
🤖 AI Executive Summary
CVE-2023-28252 is a critical privilege escalation vulnerability in the Windows Common Log File System (CLFS) driver with a CVSS score of 9.0. An attacker with local access can exploit this vulnerability to escalate privileges to SYSTEM level, potentially compromising entire systems. Active exploits are available in the wild, making immediate patching essential for all Saudi organizations running Windows infrastructure.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 14:16
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses severe risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare providers, energy sector (ARAMCO and subsidiaries), and telecommunications companies (STC, Mobily). Any Windows-based system in these sectors can be compromised locally, leading to unauthorized access to critical systems, data theft, and operational disruption. The CLFS driver is fundamental to Windows logging and system operations, making this vulnerability particularly dangerous for critical infrastructure.
🏢 Affected Saudi Sectors
Banking and Financial Services (SAMA-regulated)
Government and Public Administration (NCA oversight)
Healthcare and Medical Services
Energy and Oil & Gas (ARAMCO, subsidiaries)
Telecommunications (STC, Mobily, Zain)
Critical Infrastructure
Education and Research Institutions
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all Windows systems across your organization (servers, workstations, IoT devices)
2. Prioritize patching critical systems: domain controllers, file servers, payment processing systems, and healthcare/energy infrastructure
3. Apply Microsoft security updates immediately (KB5025885 or later for affected Windows versions)
4. Restart systems after patching to ensure full remediation
COMPENSATING CONTROLS (if patching delayed):
1. Restrict local access through physical security and access controls
2. Disable unnecessary services and disable CLFS if not required
3. Monitor for suspicious privilege escalation attempts
4. Implement application whitelisting to prevent unauthorized code execution
5. Use Windows Defender for Real-Time Protection
DETECTION RULES:
1. Monitor Event ID 4688 (Process Creation) for unusual clfs.sys interactions
2. Alert on processes attempting to load or interact with clfs.sys driver
3. Monitor for unexpected SYSTEM-level process spawning from user-level processes
4. Track failed and successful privilege escalation attempts in Security Event Log
5. Monitor for suspicious activity in %SystemRoot%\System32\drivers\clfs.sys
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع أنظمة Windows في مؤسستك (الخوادم، محطات العمل، أجهزة IoT)
2. حدد أولويات تصحيح الأنظمة الحرجة: متحكمات المجال، خوادم الملفات، أنظمة معالجة الدفع، والبنية التحتية للرعاية الصحية والطاقة
3. طبق تحديثات أمان Microsoft فورًا (KB5025885 أو أحدث للإصدارات المتأثرة من Windows)
4. أعد تشغيل الأنظمة بعد التصحيح لضمان الحل الكامل
الضوابط البديلة (إذا تأخر التصحيح):
1. قيد الوصول المحلي من خلال الأمان المادي وضوابط الوصول
2. عطل الخدمات غير الضرورية وعطل CLFS إذا لم تكن مطلوبة
3. راقب محاولات تصعيد الامتيازات المريبة
4. طبق قائمة بيضاء للتطبيقات لمنع تنفيذ الكود غير المصرح به
5. استخدم Windows Defender للحماية في الوقت الفعلي
قواعد الكشف:
1. راقب معرف الحدث 4688 (إنشاء العملية) للتفاعلات المريبة مع clfs.sys
2. تنبيه العمليات التي تحاول تحميل أو التفاعل مع برنامج تشغيل clfs.sys
3. راقب عمليات SYSTEM غير المتوقعة التي تنبثق من عمليات على مستوى المستخدم
4. تتبع محاولات تصعيد الامتيازات الفاشلة والناجحة في سجل أحداث الأمان
5. راقب النشاط المريب في %SystemRoot%\System32\drivers\clfs.sys
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
ECC 2024 A.12.2.1 - Secure development policy
ECC 2024 A.12.6.2 - Restrictions on software installation
🔵 SAMA CSF
ID.RA-1 - Asset Management and Vulnerability Management
PR.IP-12 - System and Communications Protection
DE.CM-8 - Vulnerability Scans
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development policy and procedures
A.12.2.1 - Restrictions on software installation
🟣 PCI DSS v4.0
Requirement 6.2 - Security patches and updates
Requirement 11.2 - Vulnerability scanning
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Windows