📄 Description (English)
SonicWall SSLVPN SMA100 SQL Injection Vulnerability — SonicWall SSLVPN SMA100 contains a SQL injection vulnerability that allows remote exploitation for credential access by an unauthenticated attacker.
🤖 AI Executive Summary
CVE-2021-20016 is a critical SQL injection vulnerability in SonicWall SSLVPN SMA100 that allows unauthenticated remote attackers to extract credentials and gain unauthorized access. With a CVSS score of 9.0 and publicly available exploits, this poses an immediate threat to organizations using this VPN appliance. Patching is urgent as the vulnerability requires no authentication and can lead to complete compromise of VPN infrastructure and lateral movement into corporate networks.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 22:56
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses critical risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), and large enterprises relying on SonicWall SSLVPN for remote access. Saudi Aramco, telecommunications providers (STC, Mobily), and healthcare organizations using this appliance are at severe risk. The vulnerability enables credential theft, unauthorized VPN access, and potential lateral movement into critical infrastructure networks. Given Saudi Arabia's digital transformation initiatives and increased remote work adoption, widespread SMA100 deployment makes this a high-impact threat across multiple critical sectors.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Energy and Utilities
Healthcare
Telecommunications
Large Enterprises with Remote Workforce
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all SonicWall SSLVPN SMA100 appliances in your environment and document their versions
2. Isolate or restrict network access to affected SMA100 devices if patching cannot be completed immediately
3. Review VPN access logs for suspicious authentication attempts or SQL injection patterns (look for SQL keywords in login parameters)
4. Force password reset for all VPN users to invalidate potentially compromised credentials
5. Enable enhanced logging and monitoring on VPN appliances
PATCHING GUIDANCE:
1. Apply SonicWall security patches immediately (check SonicWall advisory for specific version numbers)
2. Test patches in non-production environment first
3. Schedule maintenance window for production deployment
4. Verify patch application by checking firmware version post-update
COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement network segmentation to restrict SMA100 access to authorized networks only
2. Deploy WAF/IPS rules to block SQL injection patterns in VPN traffic
3. Implement IP whitelisting for VPN access
4. Enable multi-factor authentication (MFA) for all VPN users
5. Monitor for exploitation attempts using IDS/IPS signatures
DETECTION RULES:
1. Monitor for HTTP requests containing SQL keywords (UNION, SELECT, DROP, INSERT) in authentication parameters
2. Alert on failed login attempts followed by successful access from same source
3. Track unusual database query patterns in VPN logs
4. Monitor for credential extraction attempts in VPN session logs
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع أجهزة SonicWall SSLVPN SMA100 في بيئتك وتوثيق إصداراتها
2. عزل أو تقييد الوصول إلى الأجهزة المتأثرة إذا لم يكن التصحيح ممكناً فوراً
3. راجع سجلات وصول VPN للبحث عن محاولات مصادقة مريبة أو أنماط حقن SQL
4. فرض إعادة تعيين كلمة المرور لجميع مستخدمي VPN
5. تفعيل السجلات المحسنة والمراقبة على أجهزة VPN
إرشادات التصحيح:
1. تطبيق تصحيحات أمان SonicWall فوراً
2. اختبر التصحيحات في بيئة غير الإنتاج أولاً
3. جدول نافذة الصيانة لنشر الإنتاج
4. تحقق من تطبيق التصحيح بفحص إصدار البرنامج الثابت
الضوابط البديلة:
1. تطبيق تقسيم الشبكة لتقييد وصول SMA100
2. نشر قواعد WAF/IPS لحجب أنماط حقن SQL
3. تطبيق القائمة البيضاء للعناوين IP
4. تفعيل المصادقة متعددة العوامل لجميع مستخدمي VPN
5. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information Security Policies and Procedures
A.6.1.1 - Access Control Policy
A.6.2.1 - User Registration and De-registration
A.8.2.1 - Classification of Information
A.9.2.1 - User Access Management
A.12.2.1 - Restrictions on Access to Information
A.14.2.1 - Information Security Requirements Analysis and Specification
🔵 SAMA CSF
ID.AM-2 - Software Inventory
PR.AC-1 - Access Control Policy
PR.AC-4 - Access Rights Management
PR.DS-2 - Data Security
DE.CM-1 - Network Monitoring
DE.CM-3 - Personnel Activity Monitoring
RS.MI-2 - Incident Response Procedures
🟡 ISO 27001:2022
A.5.1 - Management Direction
A.6.1 - Internal Organization
A.8.1 - Asset Management
A.9.1 - Access Control
A.9.2 - User Access Management
A.9.4 - Access Control to Information Systems and Applications
A.12.2 - Restrictions on Access to Information
A.14.2 - Information Security Requirements Analysis
🟣 PCI DSS v4.0
Requirement 1.1 - Firewall Configuration Standards
Requirement 2.1 - Default Passwords
Requirement 6.2 - Security Patches
Requirement 8.1 - User Access Control
Requirement 10.2 - Automated Audit Trails
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
SonicWall:SSLVPN SMA100