📄 Description (English)
TRN 3.6-23 contains a stack buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the application. Attackers can craft a malicious command-line argument with 156 bytes of padding followed by a return address to overwrite the instruction pointer and execute shellcode with user privileges.
🤖 AI Executive Summary
CVE-2016-20042 is a stack buffer overflow vulnerability in TRN 3.6-23 that allows local attackers to execute arbitrary code through oversized command-line arguments. With a CVSS score of 8.4, this vulnerability poses a significant risk to systems running the affected software, particularly in environments where local access controls are insufficient. The lack of available patches makes immediate mitigation through alternative controls critical for Saudi organizations.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 24, 2026 04:53
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations with legacy systems running TRN 3.6-23, particularly in government agencies, research institutions, and academic centers that may utilize this software. The risk is elevated in environments with inadequate local access controls and privilege separation. Banking and financial institutions using TRN for transaction processing face moderate risk if the software is deployed in critical infrastructure. Telecommunications and energy sectors with legacy system dependencies require immediate assessment. The vulnerability's local-only nature reduces exposure in properly segmented networks but remains critical in shared computing environments.
🏢 Affected Saudi Sectors
Government and Public Administration
Academic and Research Institutions
Telecommunications
Energy and Utilities
Healthcare (if TRN used in legacy systems)
Financial Services (legacy systems)
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all systems running TRN 3.6-23 through asset inventory and vulnerability scanning
2. Restrict local access to systems running TRN through strong authentication and access controls
3. Implement principle of least privilege - ensure users run TRN with minimal necessary permissions
4. Disable or isolate TRN services if not actively required
Compensating Controls (no patch available):
5. Deploy application whitelisting to prevent unauthorized code execution
6. Implement strict input validation and command-line argument filtering at the OS level
7. Use security modules (SELinux/AppArmor) to restrict TRN process capabilities
8. Monitor and log all TRN process executions and command-line arguments
9. Implement file integrity monitoring on TRN binaries and libraries
10. Segment networks to limit lateral movement from compromised TRN processes
11. Consider upgrading to alternative software with active security support
Detection Rules:
- Monitor for TRN process execution with unusually long command-line arguments (>156 bytes)
- Alert on TRN process crashes followed by unexpected child process spawning
- Track unauthorized privilege escalation attempts from TRN processes
- Log all local authentication attempts to systems running TRN
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تقوم بتشغيل TRN 3.6-23 من خلال جرد الأصول والمسح الضعيف
2. تقييد الوصول المحلي للأنظمة التي تقوم بتشغيل TRN من خلال المصادقة القوية وضوابط الوصول
3. تطبيق مبدأ أقل امتياز - تأكد من أن المستخدمين يقومون بتشغيل TRN بأقل صلاحيات ضرورية
4. تعطيل أو عزل خدمات TRN إذا لم تكن مطلوبة بنشاط
الضوابط البديلة (لا يوجد تصحيح متاح):
5. نشر قائمة بيضاء للتطبيقات لمنع تنفيذ الكود غير المصرح به
6. تطبيق التحقق الصارم من المدخلات وتصفية وسائط سطر الأوامر على مستوى نظام التشغيل
7. استخدام وحدات الأمان (SELinux/AppArmor) لتقييد قدرات عملية TRN
8. مراقبة وتسجيل جميع عمليات تنفيذ TRN ووسائط سطر الأوامر
9. تطبيق مراقبة سلامة الملفات على ملفات TRN الثنائية والمكتبات
10. تقسيم الشبكات لتحديد الحركة الجانبية من عمليات TRN المخترقة
11. النظر في الترقية إلى برنامج بديل مع دعم أمان نشط
قواعد الكشف:
- مراقبة تنفيذ عملية TRN بوسائط سطر أوامر طويلة بشكل غير عادي (>156 بايت)
- تنبيه على أعطال عملية TRN متبوعة بتوليد عملية فرعية غير متوقعة
- تتبع محاولات تصعيد الامتيازات غير المصرح بها من عمليات TRN
- تسجيل جميع محاولات المصادقة المحلية للأنظمة التي تقوم بتشغيل TRN
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.5.2.1 - User access management and privilege control
A.5.2.3 - Management of privileged access rights
A.5.3.1 - Password management systems
A.5.4.1 - Event logging and monitoring
A.5.4.2 - Protection of log information
A.5.5.1 - Installation and maintenance of security patches
🔵 SAMA CSF
Identify - Asset Management (ID.AM-1, ID.AM-2)
Protect - Access Control (PR.AC-1, PR.AC-2, PR.AC-3)
Protect - Data Security (PR.DS-1, PR.DS-2)
Detect - Anomalies and Events (DE.AE-1, DE.AE-2)
Respond - Response Planning (RS.RP-1)
🟡 ISO 27001:2022
A.5.1.1 - Policies for information security
A.5.2.1 - User registration and de-registration
A.5.2.3 - Management of privileged access rights
A.5.3.1 - Password management
A.5.4.1 - Event logging
A.5.4.2 - Protection of log information
A.5.5.1 - Installation of software on operational systems
A.8.1.1 - Screening of personnel