📄 Description (English)
Crestron Multiple Products Command Injection Vulnerability — Multiple Crestron products are vulnerable to command injection via the file_transfer.cgi HTTP endpoint. A remote, unauthenticated attacker can use this vulnerability to execute operating system commands as root.
🤖 AI Executive Summary
CVE-2019-3929 is a critical command injection vulnerability affecting multiple Crestron AV control system products, exploitable via the file_transfer.cgi HTTP endpoint without any authentication. A remote attacker can execute arbitrary operating system commands with root privileges, resulting in complete system compromise. This vulnerability has a public exploit available, significantly elevating the risk of active exploitation. Organizations using Crestron systems in conference rooms, control centers, and smart building environments are at immediate risk.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 15, 2026 18:17
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations heavily reliant on Crestron AV and building automation systems face critical exposure. Key at-risk sectors include: Government/NCA — smart government buildings, ministerial conference rooms, and command centers using Crestron control systems; Energy/ARAMCO — operational technology (OT) environments and control rooms in oil and gas facilities; Banking/SAMA — executive boardrooms and trading floors with integrated AV systems; Hospitality and Smart Cities — NEOM and Vision 2030 smart infrastructure projects deploying Crestron automation; Telecom/STC — network operations centers with Crestron-managed display systems. Root-level access could enable lateral movement into corporate networks, data exfiltration, or sabotage of critical infrastructure control systems. The unauthenticated nature of the exploit makes internet-exposed Crestron devices particularly dangerous in Saudi enterprise environments.
🏢 Affected Saudi Sectors
Government
Energy
Banking
Telecom
Healthcare
Smart Cities
Hospitality
Education
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Crestron devices on the network using asset inventory tools or network scanning (search for file_transfer.cgi endpoints).
2. Immediately isolate internet-facing Crestron devices from public access using firewall rules or ACLs.
3. Block external access to port 80/443 on all Crestron devices at the perimeter firewall.
PATCHING GUIDANCE:
4. Apply the latest firmware patches provided by Crestron for all affected products — refer to Crestron Security Advisory 2019 for specific firmware versions.
5. Prioritize patching for devices in sensitive environments (control rooms, boardrooms, OT networks).
COMPENSATING CONTROLS (if patching is delayed):
6. Place all Crestron devices on isolated VLANs with strict ACLs preventing unauthorized access.
7. Implement network-level authentication (e.g., 802.1X) before allowing access to Crestron management interfaces.
8. Disable the file_transfer.cgi endpoint via web server configuration if not required.
9. Deploy IDS/IPS rules to detect exploitation attempts targeting file_transfer.cgi.
DETECTION RULES:
10. Monitor HTTP logs for POST requests to /file_transfer.cgi with unusual parameters.
11. Alert on outbound connections from Crestron device IPs to unknown external hosts.
12. Use SIEM to correlate Crestron device anomalies with lateral movement indicators.
13. Deploy Snort/Suricata rule: alert tcp any any -> $HOME_NET 80 (msg:"Crestron file_transfer.cgi exploit attempt"; content:"file_transfer.cgi"; content:"POST"; sid:9003929;)
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Crestron على الشبكة باستخدام أدوات جرد الأصول أو فحص الشبكة (البحث عن نقاط النهاية file_transfer.cgi).
2. عزل أجهزة Crestron المكشوفة على الإنترنت فوراً من الوصول العام باستخدام قواعد جدار الحماية أو قوائم التحكم في الوصول.
3. حظر الوصول الخارجي إلى المنفذين 80/443 على جميع أجهزة Crestron على مستوى جدار الحماية الخارجي.
إرشادات التصحيح:
4. تطبيق أحدث تحديثات البرامج الثابتة المقدمة من Crestron لجميع المنتجات المتأثرة — الرجوع إلى النشرة الأمنية لـ Crestron لعام 2019 للإصدارات المحددة.
5. إعطاء الأولوية للتصحيح للأجهزة في البيئات الحساسة (غرف التحكم، قاعات الاجتماعات، شبكات التقنيات التشغيلية).
ضوابط التعويض (في حالة تأخر التصحيح):
6. وضع جميع أجهزة Crestron على شبكات VLAN معزولة مع قوائم تحكم صارمة تمنع الوصول غير المصرح به.
7. تطبيق مصادقة على مستوى الشبكة (مثل 802.1X) قبل السماح بالوصول إلى واجهات إدارة Crestron.
8. تعطيل نقطة النهاية file_transfer.cgi عبر تكوين خادم الويب إذا لم تكن مطلوبة.
9. نشر قواعد IDS/IPS للكشف عن محاولات الاستغلال التي تستهدف file_transfer.cgi.
قواعد الكشف:
10. مراقبة سجلات HTTP لطلبات POST إلى /file_transfer.cgi بمعاملات غير عادية.
11. التنبيه على الاتصالات الصادرة من عناوين IP لأجهزة Crestron إلى مضيفين خارجيين غير معروفين.
12. استخدام SIEM لربط شذوذات أجهزة Crestron بمؤشرات الحركة الجانبية.
13. نشر قاعدة Snort/Suricata للكشف عن محاولات الاستغلال.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Asset Management — unpatched Crestron devices represent unmanaged risk
ECC-2-3-1: Vulnerability Management — failure to patch critical CVEs
ECC-2-4-1: Network Security — lack of network segmentation for AV/IoT devices
ECC-2-6-1: Secure Configuration — default/insecure configurations on Crestron devices
ECC-3-3-1: Physical and Environmental Security — control room AV system integrity
🔵 SAMA CSF
3.3.6 Vulnerability Management — critical unpatched vulnerability in production systems
3.3.7 Patch Management — delayed firmware updates on Crestron infrastructure
3.3.2 Network Security — insufficient segmentation of AV control systems
3.3.1 Secure Configuration Management — insecure default settings
3.4.1 Cyber Incident Management — detection and response to active exploitation
🟡 ISO 27001:2022
A.8.8 Management of technical vulnerabilities — unpatched critical CVE
A.8.20 Networks security — inadequate network segmentation for IoT/AV devices
A.8.9 Configuration management — insecure Crestron device configurations
A.8.16 Monitoring activities — lack of detection for exploitation attempts
A.5.30 ICT readiness for business continuity — AV system compromise impact
🟣 PCI DSS v4.0
Requirement 6.3.3 — All system components protected from known vulnerabilities via patching
Requirement 1.3.2 — Network access controls restricting inbound traffic to Crestron devices
Requirement 11.3 — Vulnerability scanning identifying exposed Crestron endpoints
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Crestron:Multiple Products