📄 Description (English)
WinAVR version 20100110 contains an insecure permissions vulnerability that allows authenticated users to modify system files and executables. Attackers can leverage the overly permissive access controls to potentially modify critical DLLs and executable files in the WinAVR installation directory.
🤖 AI Executive Summary
CVE-2020-36938 is a privilege escalation vulnerability in WinAVR 20100110 that allows authenticated users to modify system files and executables due to insecure file permissions. With a CVSS score of 8.8, this vulnerability poses a significant risk to organizations using WinAVR for embedded systems development. The lack of proper access controls enables attackers to compromise critical DLLs and executables, potentially leading to code execution and system compromise.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 23:53
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily affects Saudi organizations in the energy sector (ARAMCO and related contractors), telecommunications (STC), and government research institutions that utilize WinAVR for embedded systems and microcontroller development. Defense and aerospace contractors working on critical infrastructure projects are also at risk. The vulnerability enables privilege escalation and code execution, potentially compromising embedded systems used in SCADA, industrial control systems, and critical infrastructure. Government entities under NCA oversight and financial institutions with embedded systems development teams face elevated risk.
🏢 Affected Saudi Sectors
Energy (ARAMCO, contractors)
Telecommunications (STC)
Government Research Institutions
Defense and Aerospace
Critical Infrastructure
Industrial Control Systems
🎯 MITRE ATT&CK Techniques
T1548 - Abuse Elevation Control Mechanism
T1548.002 - Bypass User Account Control
T1547 - Boot or Logon Autostart Execution
T1547.001 - Registry Run Keys / Startup Folder
T1574 - Hijack Execution Flow
T1574.001 - DLL Search Order Hijacking
T1574.002 - DLL Side-Loading
T1036 - Masquerading
T1027 - Obfuscated Files or Information
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all systems running WinAVR version 20100110 across your organization
2. Restrict file system permissions on WinAVR installation directories to administrative users only
3. Implement principle of least privilege for user accounts accessing WinAVR
4. Disable WinAVR on non-essential systems until patching is complete
Patching Guidance:
1. Upgrade WinAVR to the latest available version (patch is available)
2. Verify installation directory permissions post-upgrade
3. Test patched systems in non-production environments before deployment
4. Document all systems patched and maintain version inventory
Compensating Controls:
1. Implement file integrity monitoring (FIM) on WinAVR installation directories
2. Deploy application whitelisting to prevent unauthorized executable modifications
3. Use Windows AppLocker or equivalent to restrict execution of modified binaries
4. Enable audit logging for file access and modifications in WinAVR directories
5. Implement network segmentation to isolate development systems
Detection Rules:
1. Monitor for unauthorized modifications to .dll and .exe files in WinAVR directories
2. Alert on privilege escalation attempts by non-administrative users
3. Track file permission changes on WinAVR installation paths
4. Monitor process execution from WinAVR directories for anomalous behavior
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تعمل بإصدار WinAVR 20100110 في جميع أنحاء المنظمة
2. تقييد أذونات نظام الملفات في أدلة تثبيت WinAVR للمستخدمين الإداريين فقط
3. تطبيق مبدأ أقل امتياز للحسابات التي تصل إلى WinAVR
4. تعطيل WinAVR على الأنظمة غير الأساسية حتى اكتمال التصحيح
إرشادات التصحيح:
1. ترقية WinAVR إلى أحدث إصدار متاح (التصحيح متاح)
2. التحقق من أذونات دليل التثبيت بعد الترقية
3. اختبار الأنظمة المصححة في بيئات غير الإنتاج قبل النشر
4. توثيق جميع الأنظمة المصححة والحفاظ على جرد الإصدارات
الضوابط البديلة:
1. تطبيق مراقبة سلامة الملفات (FIM) على أدلة تثبيت WinAVR
2. نشر القائمة البيضاء للتطبيقات لمنع التعديلات غير المصرح بها على الملفات القابلة للتنفيذ
3. استخدام Windows AppLocker أو ما يعادله لتقييد تنفيذ الملفات الثنائية المعدلة
4. تفعيل تسجيل التدقيق للوصول إلى الملفات والتعديلات في أدلة WinAVR
5. تطبيق تقسيم الشبكة لعزل أنظمة التطوير
قواعد الكشف:
1. مراقبة التعديلات غير المصرح بها على ملفات .dll و .exe في أدلة WinAVR
2. التنبيه على محاولات تصعيد الامتيازات من قبل المستخدمين غير الإداريين
3. تتبع تغييرات أذونات الملفات على مسارات تثبيت WinAVR
4. مراقبة تنفيذ العمليات من أدلة WinAVR للسلوك الشاذ
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Policies and procedures for access control
A.6.1.1 - Information security roles and responsibilities
A.9.1.1 - Access control policy
A.9.2.1 - User registration and de-registration
A.9.4.1 - Password management
A.12.4.1 - Event logging
🔵 SAMA CSF
ID.AM-2 - Software inventory and versioning
PR.AC-1 - Access control policy and procedures
PR.AC-3 - Access enforcement
PR.AC-4 - Access rights management
DE.CM-3 - Personnel activity monitoring
🟡 ISO 27001:2022
A.5.1 - Management direction for information security
A.6.1 - Organization of information security
A.9.1 - Access control policy
A.9.2 - User access management
A.9.4 - Access control for special user groups
A.12.4 - Logging