📄 Description (English)
Juniper Junos OS Path Traversal Vulnerability — A path traversal vulnerability in the HTTP/HTTPS service used by J-Web, Web Authentication, Dynamic-VPN (DVPN), Firewall Authentication Pass-Through with Web-Redirect, and Zero Touch Provisioning (ZTP) allows an unauthenticated attacker to perform remote code execution.
🤖 AI Executive Summary
CVE-2020-1631 is a critical path traversal vulnerability (CVSS 9.0) in Juniper Junos OS affecting multiple web-based services including J-Web, Dynamic-VPN, Web Authentication, and Zero Touch Provisioning. An unauthenticated remote attacker can exploit this flaw to traverse directory paths and achieve remote code execution on affected devices without any credentials. The vulnerability is particularly dangerous as it requires no authentication and a public exploit is available, significantly lowering the barrier for threat actors. Organizations running Juniper network infrastructure must treat this as an emergency patching priority given the potential for complete device compromise.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 18, 2026 19:22
🇸🇦 Saudi Arabia Impact Assessment
Saudi Arabia's critical infrastructure heavily relies on Juniper networking equipment across multiple high-value sectors. Energy sector organizations including Saudi Aramco and SABIC use Juniper devices extensively in their OT/IT network boundaries, making RCE exploitation potentially catastrophic for industrial control systems. SAMA-regulated financial institutions and major banks (Al Rajhi, SNB, Riyad Bank) deploying Juniper for perimeter and core routing face risk of complete network compromise. Government entities under NCA oversight using Juniper for inter-agency connectivity are at elevated risk. Telecom providers including STC and Mobily, which form the backbone of Saudi digital infrastructure, are particularly exposed given the J-Web and DVPN attack surface. The availability of a public exploit combined with Saudi Arabia's status as a high-priority target for state-sponsored threat actors (APT33, APT34) makes this vulnerability extremely urgent for Saudi SOCs.
🏢 Affected Saudi Sectors
Energy & Oil/Gas
Banking & Financial Services
Government
Telecommunications
Healthcare
Transportation
Defense & National Security
Water & Utilities
🎯 MITRE ATT&CK Techniques
T1190 — Exploit Public-Facing Application
T1059 — Command and Scripting Interpreter (post-exploitation)
T1083 — File and Directory Discovery
T1005 — Data from Local System
T1133 — External Remote Services
T1078 — Valid Accounts (credential harvesting post-exploitation)
T1210 — Exploitation of Remote Services
T1565 — Data Manipulation (network device configuration tampering)
⚖️ Saudi Risk Score (AI)
9.4
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS (0-24 hours):
1. Identify all Juniper devices running affected Junos OS versions across your environment using asset inventory.
2. Immediately disable J-Web, Web Authentication, DVPN, and ZTP services on internet-facing devices if not operationally required: 'delete system services web-management' or restrict access via firewall filters.
3. Block external access to HTTP/HTTPS management ports (80/443) on Juniper devices using upstream ACLs or firewall rules.
4. Restrict management plane access to trusted IP ranges only using Junos firewall filters.
PATCHING GUIDANCE:
5. Apply vendor patches immediately — upgrade to Junos OS versions: 12.3R12-S15, 12.3X48-D95, 14.1X53-D50, 15.1R7-S6, 15.1X49-D200, 15.1X53-D238, 16.1R7-S7, 17.2R3-S3, 17.3R3-S7, 17.4R2-S9, 18.1R3-S9, 18.2R2-S7, 18.3R1-S7, 18.4R1-S7, 19.1R1-S5, 19.2R1-S4, 19.3R2-S2, 19.4R1-S1, 20.1R1 or later.
6. Follow Juniper Security Advisory JSA11021 for complete version matrix.
COMPENSATING CONTROLS (if patching is delayed):
7. Deploy IPS/IDS signatures to detect path traversal patterns (../../) targeting Juniper HTTP services.
8. Enable logging for all management plane access and forward to SIEM for anomaly detection.
9. Implement out-of-band management (dedicated management VRF/interface) to isolate management traffic.
10. Use jump servers/bastion hosts for all administrative access to Juniper devices.
DETECTION RULES:
11. Monitor for HTTP requests containing '../' or '%2e%2e' patterns targeting Juniper management interfaces.
12. Alert on unexpected outbound connections from Juniper devices (potential post-exploitation C2).
13. Review Junos system logs for unauthorized configuration changes or shell access.
14. Deploy Snort/Suricata rule: alert tcp any any -> $MGMT_NET 443 (msg:'Juniper CVE-2020-1631 Path Traversal'; content:'..%2f'; http_uri; sid:2020163101;)
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية (خلال 0-24 ساعة):
1. تحديد جميع أجهزة Juniper التي تعمل بإصدارات Junos OS المتأثرة عبر جرد الأصول.
2. تعطيل خدمات J-Web والمصادقة عبر الويب وDVPN وZTP فوراً على الأجهزة المواجهة للإنترنت إذا لم تكن ضرورية تشغيلياً.
3. حجب الوصول الخارجي إلى منافذ إدارة HTTP/HTTPS (80/443) على أجهزة Juniper باستخدام قوائم التحكم في الوصول الأمامية.
4. تقييد وصول مستوى الإدارة على نطاقات IP موثوقة فقط باستخدام مرشحات جدار الحماية في Junos.
إرشادات التصحيح:
5. تطبيق تصحيحات المورد فوراً والترقية إلى إصدارات Junos OS المحددة في الاستشارة الأمنية JSA11021.
6. مراجعة مصفوفة الإصدارات الكاملة في استشارة Juniper الأمنية JSA11021.
ضوابط التعويض (في حالة تأخر التصحيح):
7. نشر توقيعات IPS/IDS للكشف عن أنماط اجتياز المسار التي تستهدف خدمات HTTP في Juniper.
8. تفعيل التسجيل لجميع عمليات الوصول إلى مستوى الإدارة وإرسالها إلى SIEM للكشف عن الشذوذ.
9. تنفيذ إدارة خارج النطاق باستخدام VRF/واجهة إدارة مخصصة لعزل حركة مرور الإدارة.
10. استخدام خوادم القفز/المضيفين الحصينين لجميع عمليات الوصول الإداري إلى أجهزة Juniper.
قواعد الكشف:
11. مراقبة طلبات HTTP التي تحتوي على أنماط '../' أو '%2e%2e' التي تستهدف واجهات إدارة Juniper.
12. التنبيه على الاتصالات الصادرة غير المتوقعة من أجهزة Juniper.
13. مراجعة سجلات نظام Junos بحثاً عن تغييرات غير مصرح بها في التكوين أو الوصول إلى الصدفة.
14. نشر قواعد Snort/Suricata للكشف عن محاولات استغلال الثغرة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Cybersecurity Vulnerability Management
ECC-2-3-1: Network Security Architecture
ECC-2-3-3: Remote Access Security
ECC-2-3-5: Network Device Security Configuration
ECC-1-3-6: Patch Management
ECC-2-2-1: Identity and Access Management for Network Devices
🔵 SAMA CSF
3.3.5: Vulnerability Management
3.3.6: Patch Management
3.3.2: Network Security
3.3.3: Remote Access
3.2.5: Secure Configuration Management
3.4.2: Security Monitoring and Logging
🟡 ISO 27001:2022
A.12.6.1: Management of Technical Vulnerabilities
A.13.1.1: Network Controls
A.13.1.3: Segregation in Networks
A.9.4.2: Secure Log-on Procedures
A.12.4.1: Event Logging
A.14.2.2: System Change Control Procedures
🟣 PCI DSS v4.0
Requirement 6.3.3: All system components are protected from known vulnerabilities by installing applicable security patches
Requirement 1.3.2: Restrict inbound and outbound traffic to only that necessary
Requirement 10.2: Implement audit logs to detect unauthorized access
Requirement 6.4.1: Security vulnerabilities are identified and managed
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Juniper:Junos OS