📄 Description (English)
Endian Firewall version 3.3.25 and prior allow authenticated users to execute arbitrary OS commands via the DATE parameter to /cgi-bin/logs_openvpn.cgi. The DATE parameter value is used to construct a file path that is passed to a Perl open() call, which allows command injection due to an incomplete regular expression validation.
🤖 AI Executive Summary
Endian Firewall versions 3.3.25 and prior contain a command injection vulnerability in the OpenVPN logs module that allows authenticated users to execute arbitrary OS commands. The vulnerability stems from incomplete regex validation of the DATE parameter in /cgi-bin/logs_openvpn.cgi, which is passed unsanitized to Perl's open() function. With a CVSS score of 8.8 and no patch currently available, this poses an immediate risk to organizations using Endian Firewall as their perimeter security device.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 07:37
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations using Endian Firewall Community Edition face critical risk, particularly: (1) Banking sector and SAMA-regulated institutions relying on Endian for VPN/remote access security; (2) Government agencies (NCA, NCSC) and critical infrastructure operators using Endian for perimeter defense; (3) Telecom providers (STC, Mobily, Zain) using Endian for network segmentation; (4) Energy sector (ARAMCO, SEC) and healthcare facilities using Endian for secure remote administration. Authenticated insider threats or compromised admin accounts could lead to complete firewall bypass, lateral movement into critical networks, and data exfiltration. The vulnerability is particularly dangerous in Saudi's interconnected critical infrastructure environment.
🏢 Affected Saudi Sectors
Banking and Financial Services (SAMA-regulated institutions)
Government and Critical Infrastructure (NCA, NCSC, ministries)
Telecommunications (STC, Mobily, Zain)
Energy and Utilities (ARAMCO, SEC, power distribution)
Healthcare (hospitals, medical facilities)
Defense and Security
Large Enterprise Networks
🎯 MITRE ATT&CK Techniques
T1190 - Exploit Public-Facing Application: Exploitation of web-based firewall management interface
T1059.006 - Command and Scripting Interpreter: Perl: Arbitrary command execution via Perl open() function
T1078.001 - Valid Accounts: Abuse of authenticated admin credentials or sessions
T1021.001 - Remote Services: SSH/VPN: Firewall compromise enabling lateral movement
T1562.008 - Impair Defenses: Disable Logging: Potential to disable firewall logging after compromise
T1070.004 - Indicator Removal: File Deletion: Cover tracks by deleting audit logs
T1548.004 - Abuse Elevation Control Mechanism: Sudo: Execute commands with elevated privileges
T1021.004 - Remote Services: SSH: Use compromised firewall for SSH-based lateral movement
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Endian Firewall instances running version 3.3.25 or earlier via asset inventory and network scanning
2. Restrict administrative access to Endian Firewall management interfaces (limit to trusted IPs, disable remote admin if possible)
3. Implement network segmentation to isolate Endian Firewall management traffic
4. Monitor authentication logs for suspicious admin account activity
5. Review VPN access logs for unusual DATE parameter values or command-like syntax
COMPENSATING CONTROLS (until patch available):
6. Deploy WAF/IPS rules to block requests containing shell metacharacters (|, ;, &, $, `, >, <) in DATE parameter
7. Implement strict input validation at network perimeter: block requests to /cgi-bin/logs_openvpn.cgi with DATE values not matching YYYY-MM-DD format
8. Disable OpenVPN logging feature if not operationally required
9. Implement command execution monitoring on Endian Firewall systems (auditd, syslog)
10. Establish out-of-band monitoring for unauthorized process spawning from Perl/CGI processes
DETECTION RULES:
- Alert on HTTP POST/GET to /cgi-bin/logs_openvpn.cgi with DATE parameter containing: pipe (|), semicolon (;), backtick (`), dollar sign ($), ampersand (&), parentheses
- Monitor for Perl process spawning shell commands (sh, bash, cmd.exe) from httpd/CGI context
- Log all authentication to Endian admin interface with source IP tracking
- Alert on any modification to /cgi-bin/logs_openvpn.cgi or related Perl scripts
PATCHING STRATEGY:
11. Contact Endian support for security update timeline; consider migration to alternative firewall solutions if patch timeline exceeds 30 days
12. Establish change control process for any Endian Firewall updates
13. Test patches in isolated lab environment before production deployment
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع مثيلات Endian Firewall التي تعمل بالإصدار 3.3.25 أو الإصدارات السابقة عبر جرد الأصول والمسح الشبكي
2. تقييد الوصول الإداري إلى واجهات إدارة Endian Firewall (تحديد عناوين IP موثوقة، تعطيل الإدارة البعيدة إن أمكن)
3. تنفيذ تقسيم الشبكة لعزل حركة إدارة Endian Firewall
4. مراقبة سجلات المصادقة للنشاط المريب للحسابات الإدارية
5. مراجعة سجلات VPN للقيم غير العادية لمعامل DATE أو بناء جملة تشبه الأوامر
الضوابط البديلة (حتى توفر التصحيح):
6. نشر قواعد WAF/IPS لحجب الطلبات التي تحتوي على أحرف metacharacters (|، ;، &، $، `، >، <) في معامل DATE
7. تنفيذ التحقق من صحة الإدخال الصارم على محيط الشبكة: حجب الطلبات إلى /cgi-bin/logs_openvpn.cgi بقيم DATE لا تطابق تنسيق YYYY-MM-DD
8. تعطيل ميزة تسجيل OpenVPN إذا لم تكن مطلوبة تشغيلياً
9. تنفيذ مراقبة تنفيذ الأوامر على أنظمة Endian Firewall (auditd، syslog)
10. إنشاء مراقبة خارج النطاق لتوليد العمليات غير المصرح بها من عمليات Perl/CGI
قواعد الكشف:
- تنبيه على HTTP POST/GET إلى /cgi-bin/logs_openvpn.cgi مع معامل DATE يحتوي على: أنبوب (|)، فاصلة منقوطة (;)، علامة خلفية (`)، علامة دولار ($)، علامة العطف (&)، أقواس
- مراقبة عمليات Perl التي تولد أوامر shell (sh، bash، cmd.exe) من سياق httpd/CGI
- تسجيل جميع المصادقات لواجهة إدارة Endian مع تتبع عنوان IP المصدر
- تنبيه على أي تعديل على /cgi-bin/logs_openvpn.cgi أو سكريبتات Perl ذات الصلة
استراتيجية التصحيح:
11. الاتصال بدعم Endian للحصول على الجدول الزمني لتحديث الأمان؛ النظر في الهجرة إلى حلول جدار حماية بديلة إذا تجاوز الجدول الزمني للتصحيح 30 يوماً
12. إنشاء عملية التحكم في التغييرات لأي تحديثات Endian Firewall
13. اختبار التصحيحات في بيئة معملية معزولة قبل نشرها في الإنتاج
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control: Restrict administrative access to firewall management interfaces
ECC 2024 A.5.2.1 - User Authentication: Monitor and log all authentication attempts to critical systems
ECC 2024 A.6.1.1 - Cryptography: Ensure secure communication channels for firewall management
ECC 2024 A.7.1.1 - Physical and Environmental Security: Isolate critical security infrastructure
ECC 2024 A.12.4.1 - Logging and Monitoring: Implement comprehensive audit logging for firewall activities
ECC 2024 A.12.6.1 - Management of Technical Vulnerabilities: Establish vulnerability management process for critical systems
🔵 SAMA CSF
SAMA CSF Governance: Maintain inventory of critical security infrastructure and patch status
SAMA CSF Risk Management: Assess and mitigate risks from unpatched firewall vulnerabilities
SAMA CSF Security Architecture: Implement defense-in-depth with compensating controls
SAMA CSF Incident Management: Establish detection and response procedures for firewall compromise
SAMA CSF Third-Party Risk: Monitor Endian Firewall vendor security updates and support timeline
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access Control: Restrict access to firewall management functions
ISO 27001:2022 A.7.1 - Physical and Environmental Security: Protect firewall infrastructure
ISO 27001:2022 A.8.1 - Cryptography: Secure administrative communications
ISO 27001:2022 A.12.4.1 - Event Logging: Monitor and log firewall security events
ISO 27001:2022 A.12.6.1 - Management of Technical Vulnerabilities: Identify and remediate vulnerabilities
ISO 27001:2022 A.14.2.1 - Supplier Relationships: Monitor vendor security posture and patch availability
🟣 PCI DSS v4.0
PCI DSS 1.1 - Firewall Configuration: Ensure firewall security controls are not compromised
PCI DSS 2.2.4 - Configuration Standards: Document and maintain secure firewall configurations
PCI DSS 6.2 - Security Patches: Implement patches for critical vulnerabilities in security infrastructure
PCI DSS 10.2.1 - Logging: Log all access to firewall administrative functions
PCI DSS 11.2.2 - Vulnerability Scanning: Include firewall systems in vulnerability assessment scope
📦 Affected Products / CPE 1 entries
endian:firewall_community