📄 Description (English)
A flaw has been found in Totolink A7100RU 7.4cu.2313_b20191024. The impacted element is the function setRemoteCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument enable can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used.
🤖 AI Executive Summary
A critical OS command injection vulnerability exists in Totolik A7100RU router firmware (version 7.4cu.2313_b20191024) affecting the setRemoteCfg function. An unauthenticated remote attacker can manipulate the 'enable' parameter to execute arbitrary OS commands with root privileges. With no patch available and exploit code published, this poses immediate risk to organizations using this router model for network infrastructure.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 7, 2026 17:55
🇸🇦 Saudi Arabia Impact Assessment
High impact for Saudi telecommunications sector (STC, Mobily, Zain) and government agencies using Totolik routers for network infrastructure. Banking sector (SAMA-regulated institutions) at risk if routers used in branch networks or data centers. Energy sector (ARAMCO, utilities) vulnerable if deployed in operational technology networks. Healthcare organizations using these routers for network segmentation face potential patient data exposure. Small to medium enterprises across all sectors represent significant attack surface.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services
Government and Public Administration
Energy and Utilities
Healthcare
Small and Medium Enterprises
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.7
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Totolik A7100RU devices in your network using network scanning tools (nmap, Shodan queries)
2. Isolate affected devices from critical networks immediately
3. Implement network segmentation to restrict access to router management interfaces
4. Change all default credentials and disable remote management features
5. Monitor for suspicious access patterns to /cgi-bin/cstecgi.cgi endpoint
COMPENSATING CONTROLS (no patch available):
1. Implement WAF rules to block requests containing command injection payloads (;, |, &, $(), backticks)
2. Restrict access to router management interfaces via firewall rules (port 80/443/8080)
3. Deploy IDS/IPS signatures detecting setRemoteCfg parameter manipulation
4. Implement network access control (NAC) to prevent unauthorized device connections
5. Consider replacing affected devices with patched alternatives from other vendors
DETECTION RULES:
1. Monitor HTTP POST requests to /cgi-bin/cstecgi.cgi with 'enable' parameter containing special characters
2. Alert on successful command execution patterns in router logs (system calls, process spawning)
3. Track unusual outbound connections from router IP addresses
4. Monitor for configuration changes in router settings
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Totolik A7100RU في شبكتك باستخدام أدوات المسح (nmap، استعلامات Shodan)
2. عزل الأجهزة المتأثرة عن الشبكات الحرجة فوراً
3. تنفيذ تقسيم الشبكة لتقييد الوصول إلى واجهات إدارة جهاز التوجيه
4. تغيير جميع بيانات الاعتماد الافتراضية وتعطيل ميزات الإدارة البعيدة
5. مراقبة أنماط الوصول المريبة إلى نقطة نهاية /cgi-bin/cstecgi.cgi
الضوابط التعويضية (لا يوجد تصحيح متاح):
1. تنفيذ قواعد WAF لحجب الطلبات التي تحتوي على حمولات حقن الأوامر (;، |، &، $()، علامات الاقتباس العكسية)
2. تقييد الوصول إلى واجهات إدارة جهاز التوجيه عبر قواعد جدار الحماية (المنافذ 80/443/8080)
3. نشر توقيعات IDS/IPS للكشف عن التلاعب بمعامل setRemoteCfg
4. تنفيذ التحكم في الوصول إلى الشبكة (NAC) لمنع اتصالات الأجهزة غير المصرح بها
5. النظر في استبدال الأجهزة المتأثرة بدائل معدلة من بائعين آخرين
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.8.1.1 - User access management
A.12.2.1 - Change management procedures
A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.AM-2 - Software platforms and applications are catalogued
PR.AC-1 - Identities and credentials are issued and managed
PR.PT-2 - Removable media is protected and its use restricted
DE.CM-1 - The network is monitored to detect potential cybersecurity events
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development policy
A.12.2.1 - Change management
A.13.1.1 - Network security perimeter
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches must be installed
Requirement 11.2 - Vulnerability scanning
Requirement 1.1 - Firewall configuration standards
🔗 References & Sources 5