CVE-2021-40870 — AI Deep Analysis Summary

🚨 **Essence**: Aviatrix Controller suffers from **Unrestricted File Upload** with dangerous types. <br>💥 **Consequences**: Attackers can achieve **Arbitrary Code Execution (RCE)** via directory traversal.…

🛡️ **Root Cause**: Lack of effective **type restriction and filtering** for uploaded files. <br>🔍 **Flaw**: Allows directory traversal attacks. (Note: CWE ID not provided in data).

📦 **Affected**: Aviatrix Controller **6.x** versions **before 6.5-1804.1922**. <br>⚠️ **Component**: The core controller software managing cloud infrastructure.

💀 **Attacker Capabilities**: Execute **arbitrary code** on the server. <br>🔓 **Privileges**: Can be **unauthenticated** (via traversal) or **authenticated**. Full system compromise possible!

🔑 **Threshold**: **Low to Medium**. <br>👤 **Auth**: Some PoCs show **unauthenticated** access via directory traversal, while others require **authentication**. Still, very exploitable.

💣 **Public Exp?**: **YES**. Multiple PoCs on GitHub (e.g., 0xAgun, System00-Security). <br>🌐 **Wild Exp**: Nuclei templates available. High risk of automated scanning.

🔍 **Self-Check**: Scan for Aviatrix Controller versions < 6.5-1804.1922. <br>📡 **Tools**: Use Nuclei templates or specific CVE-2021-40870 scripts to test for unrestricted upload endpoints.

🩹 **Official Fix**: **YES**. Patched in version **6.5-1804.1922** and later. <br>📝 **Ref**: Aviatrix Security Note (9-11-2021).

🚧 **No Patch?**: Implement strict **WAF rules** to block directory traversal patterns (`../`). <br>🛑 **Restrict**: Enforce strict file type whitelisting and authentication on upload endpoints.

🔥 **Urgency**: **CRITICAL**. <br>🚀 **Priority**: **P1**. RCE via unauthenticated/unrestricted upload is a top-tier threat. Patch immediately!