📄 Description (English)
A vulnerability was detected in D-Link DIR-513 1.10. This vulnerability affects the function formSetRoute of the file /goform/formSetRoute of the component POST Request Handler. The manipulation of the argument curTime results in buffer overflow. The attack may be performed from remote. The exploit is now public 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-513 router firmware version 1.10 affecting the POST request handler for route configuration. The vulnerability allows remote attackers to execute arbitrary code by manipulating the curTime parameter, with public exploit details now available. This poses significant risk to Saudi organizations using legacy D-Link networking equipment, particularly in government and critical infrastructure sectors.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 06:00
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi government agencies, military networks, and critical infrastructure operators still using legacy D-Link DIR-513 equipment. Telecommunications sector (STC, Mobily) may have legacy deployments in remote locations. Banking sector (SAMA-regulated institutions) at risk if using these routers in branch networks or legacy infrastructure. Healthcare facilities and energy sector (ARAMCO) potentially affected if DIR-513 devices remain in operational networks. The lack of vendor support and patch availability makes remediation challenging for affected organizations.
🏢 Affected Saudi Sectors
Government and Public Administration
Critical Infrastructure (Energy/ARAMCO)
Telecommunications (STC, Mobily)
Banking and Financial Services (SAMA-regulated)
Healthcare
Defense and Military
Education
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Conduct urgent inventory of all D-Link DIR-513 devices across network infrastructure
2. Isolate affected routers from internet-facing positions immediately
3. Implement network segmentation to restrict access to DIR-513 management interfaces
4. Monitor for exploitation attempts using IDS/IPS signatures
PATCHING GUIDANCE:
1. Since no patch is available from D-Link, prioritize replacement with supported router models
2. If replacement is not immediately possible, disable remote management access (disable WAN-side access to admin interface)
3. Restrict POST requests to /goform/formSetRoute endpoint using WAF or firewall rules
4. Implement strict input validation on all route configuration parameters
COMPENSATING CONTROLS:
1. Deploy network-based IPS rules to detect buffer overflow attempts in POST requests to /goform/formSetRoute
2. Implement rate limiting on POST requests to the vulnerable endpoint
3. Use VPN or jump hosts for all administrative access to affected devices
4. Enable detailed logging of all HTTP POST requests to /goform/formSetRoute
5. Implement network access controls (ACLs) to restrict which systems can communicate with DIR-513 devices
DETECTION RULES:
1. Alert on POST requests to /goform/formSetRoute with curTime parameter exceeding normal length (>256 bytes)
2. Monitor for HTTP 500 errors or device crashes following POST requests to vulnerable endpoint
3. Track failed authentication attempts to DIR-513 admin interface
4. Log all configuration changes to routing tables
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. إجراء جرد عاجل لجميع أجهزة D-Link DIR-513 عبر البنية التحتية للشبكة
2. عزل الأجهزة المتأثرة فوراً عن المواضع المواجهة للإنترنت
3. تنفيذ تقسيم الشبكة لتقييد الوصول إلى واجهات إدارة DIR-513
4. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS
إرشادات التصحيح:
1. نظراً لعدم توفر تصحيح من D-Link، أولويات الاستبدال بنماذج موجهات مدعومة
2. إذا لم يكن الاستبدال ممكناً فوراً، قم بتعطيل الوصول الإداري البعيد
3. تقييد طلبات POST إلى نقطة نهاية /goform/formSetRoute باستخدام جدار الحماية
4. تنفيذ التحقق الصارم من المدخلات على جميع معاملات تكوين المسارات
الضوابط التعويضية:
1. نشر قواعد IPS المستندة إلى الشبكة للكشف عن محاولات تجاوز المخزن المؤقت
2. تنفيذ تحديد معدل الطلبات على نقطة النهاية الضعيفة
3. استخدام VPN أو أجهزة الوصول للوصول الإداري
4. تفعيل تسجيل مفصل لجميع طلبات HTTP POST
5. تنفيذ ضوابط الوصول إلى الشبكة لتقييد الأنظمة التي يمكنها التواصل مع DIR-513
قواعد الكشف:
1. تنبيهات على طلبات POST إلى /goform/formSetRoute بمعامل curTime يتجاوز الطول الطبيعي
2. مراقبة أخطاء HTTP 500 أو توقف الجهاز بعد طلبات POST
3. تتبع محاولات المصادقة الفاشلة
4. تسجيل جميع التغييرات في جداول التوجيه
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.8.1.1 - User access management
A.8.2.1 - User registration and de-registration
A.12.2.1 - Change management procedures
A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.RA-1 - Asset management and criticality assessment
PR.IP-1 - Security policy and strategy
PR.IP-12 - Physical and logical access controls
DE.CM-1 - Detection and monitoring of network traffic
RS.RP-1 - Response and recovery planning
🟡 ISO 27001:2022
A.5.1 - Management direction for information security
A.8.1 - User endpoint devices
A.8.2 - Privileged access rights
A.12.2 - Change management
A.12.6 - Management of technical vulnerabilities
🟣 PCI DSS v4.0.1
Requirement 1.1 - Firewall configuration standards
Requirement 6.2 - Security patches and updates
Requirement 11.2 - Vulnerability scanning
🔗 References & Sources 5