📄 Description (English)
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, if a nats-server is run with static credentials for all clients provided via argv (the command-line), then those credentials are visible to any user who can see the monitoring port, if that too is enabled. The `/debug/vars` end-point contains an unredacted copy of argv. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, configure credentials inside a configuration file instead of via argv, and do not enable the monitoring port if using secrets in argv. Best practice remains to not expose the monitoring port to the Internet, or to untrusted network sources.
🤖 AI Executive Summary
NATS-Server versions prior to 2.11.15 and 2.12.6 expose static credentials through the monitoring port's `/debug/vars` endpoint when credentials are passed via command-line arguments. This information disclosure vulnerability allows unauthorized access to sensitive authentication data, potentially compromising cloud-native messaging infrastructure used across Saudi enterprises. The vulnerability requires network access to the monitoring port but poses significant risk in cloud and edge deployments common in Saudi Arabia's digital transformation initiatives.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 4, 2026 23:33
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations leveraging cloud-native and edge computing architectures, particularly: (1) Financial institutions and SAMA-regulated banks using NATS for real-time transaction processing and inter-system communication; (2) Government agencies and NCA-supervised entities deploying NATS in cloud infrastructure for secure messaging; (3) Telecommunications providers (STC, Mobily, Zain) using NATS for network management and IoT platforms; (4) Energy sector organizations (ARAMCO, SEC) utilizing NATS in operational technology and SCADA systems; (5) Healthcare providers implementing NATS for patient data exchange systems. The exposure of credentials could enable lateral movement, unauthorized system access, and compromise of critical messaging infrastructure supporting Saudi Arabia's Vision 2030 digital initiatives.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Telecommunications
Energy and Utilities
Healthcare
Cloud Service Providers
Technology and Software Development
🎯 MITRE ATT&CK Techniques
T1526 - Reconnaissance: Cloud Service Discovery
T1592 - Gather Victim Identity Information
T1589 - Gather Victim Identity Information: Credentials
T1040 - Network Sniffing
T1087 - Account Discovery
T1580 - Cloud Infrastructure Discovery
T1526 - Cloud Service Discovery
T1538 - Cloud Service Dashboard
T1526 - Cloud Infrastructure Enumeration
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all NATS-Server instances running versions prior to 2.11.15 (v2.11.x) or 2.12.6 (v2.12.x) in your environment
2. Restrict network access to monitoring ports (default 8222) to trusted administrative networks only using firewall rules
3. Disable the monitoring port entirely if not actively used for operational monitoring
4. Audit logs to identify if `/debug/vars` endpoint was accessed and review for credential exposure
PATCHING GUIDANCE:
1. Upgrade NATS-Server to version 2.11.15 or 2.12.6 or later immediately
2. Test upgrades in non-production environments first
3. Plan rolling upgrades to minimize service disruption
COMPENSATING CONTROLS (if immediate patching not possible):
1. Migrate all static credentials from command-line arguments to configuration files
2. Implement network segmentation to restrict monitoring port access to authorized administrators only
3. Disable the monitoring port if credentials are passed via argv
4. Implement API gateway authentication in front of NATS monitoring endpoints
5. Use network-based access controls (WAF/IDS) to block `/debug/vars` endpoint access from untrusted sources
DETECTION RULES:
1. Monitor for HTTP GET requests to `/debug/vars` endpoint on port 8222
2. Alert on any access to monitoring port from non-administrative IP ranges
3. Review NATS-Server startup logs for credentials in command-line arguments
4. Implement network IDS signatures for NATS monitoring port reconnaissance
5. Monitor for unusual authentication failures following potential credential exposure
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع مثيلات NATS-Server التي تعمل بإصدارات سابقة للإصدار 2.11.15 (v2.11.x) أو 2.12.6 (v2.12.x) في بيئتك
2. تقييد الوصول إلى منافذ المراقبة (الافتراضي 8222) إلى الشبكات الإدارية الموثوقة فقط باستخدام قواعد جدار الحماية
3. تعطيل منفذ المراقبة بالكامل إذا لم يكن قيد الاستخدام النشط للمراقبة التشغيلية
4. تدقيق السجلات لتحديد ما إذا تم الوصول إلى نقطة نهاية `/debug/vars` ومراجعة تعريض بيانات الاعتماد
إرشادات التصحيح:
1. ترقية NATS-Server إلى الإصدار 2.11.15 أو 2.12.6 أو أحدث على الفور
2. اختبار الترقيات في بيئات غير الإنتاج أولاً
3. التخطيط للترقيات المتدرجة لتقليل انقطاع الخدمة
الضوابط التعويضية:
1. نقل جميع بيانات الاعتماد الثابتة من معاملات سطر الأوامر إلى ملفات التكوين
2. تنفيذ تقسيم الشبكة لتقييد الوصول إلى منفذ المراقبة للمسؤولين المصرح لهم فقط
3. تعطيل منفذ المراقبة إذا تم تمرير بيانات الاعتماد عبر argv
4. تنفيذ مصادقة بوابة API أمام نقاط نهاية مراقبة NATS
5. استخدام عناصر التحكم في الوصول المستندة إلى الشبكة لحظر الوصول إلى نقطة النهاية `/debug/vars` من مصادر غير موثوقة
قواعد الكشف:
1. مراقبة طلبات HTTP GET إلى نقطة النهاية `/debug/vars` على المنفذ 8222
2. تنبيه على أي وصول إلى منفذ المراقبة من نطاقات IP غير إدارية
3. مراجعة سجلات بدء تشغيل NATS-Server للتحقق من بيانات الاعتماد في معاملات سطر الأوامر
4. تنفيذ توقيعات IDS للشبكة للاستطلاع على منفذ مراقبة NATS
5. مراقبة فشل المصادقة غير العادي بعد تعريض بيانات الاعتماد المحتملة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information security policies and procedures
ECC 2024 A.6.1.2 - Access control and authentication mechanisms
ECC 2024 A.8.2.1 - Classification and handling of information assets
ECC 2024 A.8.3.1 - Cryptographic controls and credential management
ECC 2024 A.12.4.1 - Event logging and monitoring
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software, platforms, and applications inventory
SAMA CSF PR.AC-1 - Access control policy and procedures
SAMA CSF PR.AC-6 - Appropriate access to assets and associated facilities
SAMA CSF DE.CM-1 - The network is monitored to detect potential cybersecurity events
SAMA CSF DE.CM-3 - Personnel activity is monitored to detect anomalous behavior
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Supplier relationships
ISO 27001:2022 A.8.1 - User endpoint devices
ISO 27001:2022 A.8.2 - Privileged access rights
ISO 27001:2022 A.8.3 - Information access restriction
ISO 27001:2022 A.8.4 - Access to cryptographic keys
ISO 27001:2022 A.8.5 - Authentication
ISO 27001:2022 A.8.6 - Capacity management
ISO 27001:2022 A.8.7 - Protection against malware
ISO 27001:2022 A.8.8 - Management of technical vulnerabilities
ISO 27001:2022 A.8.16 - Monitoring activities
🟣 PCI DSS v4.0.1
PCI DSS 2.1 - Inventory of system components
PCI DSS 2.2.4 - Configure system security parameters
PCI DSS 3.2.1 - Render PAN unreadable
PCI DSS 6.2 - Ensure security patches are installed
PCI DSS 7.1 - Limit access to system components
PCI DSS 8.1 - Assign unique ID to each person
PCI DSS 10.2 - Implement automated audit trails
📦 Affected Products / CPE 2 entries
linuxfoundation:nats-server
linuxfoundation:nats-server