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Vulnerabilities

CVE-2021-40870

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Aviatrix Controller Unrestricted Upload of File — Unrestricted upload of a file with a dangerous type is possible, which allows an unauthenticated user to execute arbitrary code via directory traversa
Published: Jan 18, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Aviatrix Controller Unrestricted Upload of File — Unrestricted upload of a file with a dangerous type is possible, which allows an unauthenticated user to execute arbitrary code via directory traversal.

🤖 AI Executive Summary

CVE-2021-40870 is a critical vulnerability in Aviatrix Controller allowing unauthenticated attackers to upload arbitrary files with directory traversal capabilities, leading to remote code execution. With a CVSS score of 9.0 and publicly available exploits, this poses an immediate threat to organizations using Aviatrix for cloud connectivity and network management. Immediate patching is essential as the vulnerability requires no authentication and can be exploited remotely.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 09:13
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations, particularly: (1) Banking sector (SAMA-regulated institutions) relying on Aviatrix for secure cloud connectivity and branch-to-cloud communications; (2) Government entities (NCA oversight) using Aviatrix for multi-cloud infrastructure; (3) Energy sector (ARAMCO, downstream operators) utilizing Aviatrix for critical infrastructure connectivity; (4) Telecommunications providers (STC, Mobily, Zain) managing cloud-based network services; (5) Healthcare organizations connecting to cloud-based medical systems. The unauthenticated nature of the exploit makes it particularly dangerous for perimeter-facing Aviatrix deployments.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Energy and Utilities Telecommunications Healthcare Cloud Service Providers Enterprise IT Infrastructure
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Aviatrix Controller instances in your environment and document their network exposure
2. Restrict network access to Aviatrix Controller management interfaces to authorized IP ranges only
3. Implement Web Application Firewall (WAF) rules to block suspicious file upload requests with directory traversal patterns (../, ..\)
4. Enable detailed logging and monitoring of all file upload activities to Aviatrix Controller

PATCHING GUIDANCE:
1. Apply the latest Aviatrix Controller patch immediately (version 6.5.1743 or later)
2. Verify patch installation by checking controller version in admin console
3. Test functionality in non-production environment before production deployment
4. Plan maintenance window for controller restart if required by patch

COMPENSATING CONTROLS (if patching delayed):
1. Implement network segmentation to isolate Aviatrix Controller from untrusted networks
2. Deploy intrusion detection/prevention systems (IDS/IPS) with signatures for CVE-2021-40870 exploitation attempts
3. Monitor for suspicious file uploads and directory traversal attempts in controller logs
4. Disable file upload functionality if not operationally required

DETECTION RULES:
1. Alert on HTTP POST requests to /upload endpoints with path traversal sequences
2. Monitor for executable file uploads (.exe, .sh, .py, .jsp) to Aviatrix Controller
3. Track failed authentication attempts followed by upload attempts
4. Monitor for unusual process execution spawned by Aviatrix Controller processes
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع مثيلات متحكم Aviatrix في بيئتك وقم بتوثيق تعرضها للشبكة
2. قيد الوصول إلى واجهات إدارة متحكم Aviatrix على نطاقات IP مصرح بها فقط
3. طبق قواعد جدار حماية تطبيقات الويب (WAF) لحجب طلبات رفع الملفات المريبة مع أنماط اجتياز الدليل
4. فعّل التسجيل والمراقبة التفصيلية لجميع أنشطة رفع الملفات

إرشادات التصحيح:
1. طبق أحدث تصحيح متحكم Aviatrix فوراً (الإصدار 6.5.1743 أو أحدث)
2. تحقق من تثبيت التصحيح بفحص إصدار المتحكم في وحدة التحكم
3. اختبر الوظائف في بيئة غير الإنتاج قبل نشر الإنتاج
4. خطط لنافذة صيانة لإعادة تشغيل المتحكم إذا لزم الأمر

الضوابط البديلة:
1. طبق تقسيم الشبكة لعزل متحكم Aviatrix عن الشبكات غير الموثوقة
2. نشر أنظمة كشف/منع الاختراق مع توقيعات لمحاولات استغلال CVE-2021-40870
3. راقب محاولات رفع الملفات المريبة واجتياز الدليل في سجلات المتحكم
4. عطّل وظيفة رفع الملفات إذا لم تكن مطلوبة تشغيلياً
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.6.1 - Management of technical vulnerabilities A.14.2.1 - Secure development policy A.12.3.1 - Event logging A.12.4.1 - Event logging activation
🔵 SAMA CSF
ID.RA-1 - Asset management and criticality assessment PR.IP-12 - Software, firmware, and information integrity mechanisms DE.CM-1 - The network is monitored to detect potential cybersecurity events RS.MI-1 - Incidents are contained
🟡 ISO 27001:2022
A.12.2.1 - Restrictions on software installation A.14.2.5 - Secure development environment A.12.6.1 - Management of technical vulnerabilities A.12.3.1 - Information security event logging
🟣 PCI DSS v4.0
6.2 - Ensure security patches are installed 6.5.1 - Injection flaws prevention 11.2 - Vulnerability scanning
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Aviatrix:Aviatrix Controller
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS94.26%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-02-01
Published 2022-01-18
Source Feed cisa_kev
Views 4
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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