📄 Description (English)
A flaw has been found in D-Link DIR-605L 2.13B01. Affected by this issue is the function formSetMACFilter of the file /goform/formSetMACFilter of the component POST Request Handler. This manipulation of the argument curTime causes buffer overflow. The attack may be initiated remotely. The exploit has been published and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
🤖 AI Executive Summary
A critical buffer overflow vulnerability exists in D-Link DIR-605L 2.13B01 routers affecting the MAC filter configuration function. The flaw allows remote attackers to execute arbitrary code by manipulating the curTime parameter in POST requests. With no patch available and the product reaching end-of-life, organizations using this legacy hardware face significant risk of compromise.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 18:16
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations in telecommunications (STC, Mobily, Zain) and small-to-medium enterprises using legacy D-Link routers for network perimeter defense. Government agencies and banking institutions that may have deployed these devices in secondary networks or branch offices face potential lateral movement risks. The lack of patch availability creates persistent exposure for critical network infrastructure, particularly affecting organizations unable to immediately replace legacy equipment due to operational constraints.
🏢 Affected Saudi Sectors
Telecommunications
Government
Banking and Financial Services
Healthcare
Small and Medium Enterprises
Education
Retail
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify and inventory all D-Link DIR-605L 2.13B01 devices in your network using network scanning tools
2. Isolate affected devices from critical network segments if replacement is not immediately possible
3. Implement network segmentation to restrict access to the device's web interface (port 80/443)
4. Disable remote management features and restrict administrative access to trusted IP ranges only
5. Monitor for suspicious POST requests to /goform/formSetMACFilter endpoint
Long-term Remediation:
1. Replace DIR-605L 2.13B01 devices with supported, current-generation routers from D-Link or alternative vendors
2. If immediate replacement is impossible, deploy a Web Application Firewall (WAF) to filter malicious POST requests
3. Implement intrusion detection signatures for buffer overflow attempts targeting this endpoint
4. Enable comprehensive logging and alerting for all administrative access attempts
Detection Rules:
- Monitor for POST requests to /goform/formSetMACFilter with unusually long curTime parameter values
- Alert on any successful administrative access to legacy D-Link devices
- Track firmware version of all D-Link devices to ensure no 2.13B01 instances remain
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد وحصر جميع أجهزة D-Link DIR-605L 2.13B01 في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة إذا لم يكن الاستبدال ممكناً فوراً
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى واجهة الويب للجهاز (المنفذ 80/443)
4. تعطيل ميزات الإدارة البعيدة وتقييد الوصول الإداري على نطاقات IP موثوقة فقط
5. مراقبة طلبات POST المريبة إلى نقطة النهاية /goform/formSetMACFilter
العلاج طويل الأجل:
1. استبدال أجهزة DIR-605L 2.13B01 بأجهزة توجيه مدعومة وحالية من D-Link أو بائعين بدائل
2. إذا كان الاستبدال الفوري مستحيلاً، قم بنشر جدار حماية تطبيقات الويب (WAF) لتصفية طلبات POST الضارة
3. تطبيق توقيعات كشف الاختراق لمحاولات تجاوز المخزن المؤقت التي تستهدف هذه النقطة
4. تفعيل السجلات الشاملة والتنبيهات لجميع محاولات الوصول الإداري
قواعد الكشف:
- مراقبة طلبات POST إلى /goform/formSetMACFilter بقيم معاملات curTime طويلة بشكل غير عادي
- التنبيه على أي وصول إداري ناجح إلى أجهزة D-Link القديمة
- تتبع إصدار البرنامج الثابت لجميع أجهزة D-Link للتأكد من عدم بقاء أي نسخ 2.13B01
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control
ECC 2024 A.8.2 - Secure Configuration Management
ECC 2024 A.13.1 - Network Security and Segmentation
ECC 2024 A.14.2 - Vulnerability Management and Patching
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Physical and Cyber Assets Inventory
SAMA CSF PR.AC-1 - Access Control and Authentication
SAMA CSF PR.DS-6 - Secure Disposal of Assets
SAMA CSF DE.CM-1 - Detection and Analysis
🟡 ISO 27001:2022
ISO 27001:2022 A.5.9 - Access Control
ISO 27001:2022 A.8.1 - Asset Management
ISO 27001:2022 A.8.2 - Configuration Management
ISO 27001:2022 A.8.6 - Management of Technical Vulnerabilities
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall Configuration Standards
PCI DSS 2.1 - Default Passwords and Security Parameters
PCI DSS 6.2 - Security Patches and Updates
🔗 References & Sources 5