CVE-2020-35476 — AI Deep Analysis Summary

🚨 **Essence**: OpenTSDB suffers from **OS Command Injection** via the `yrange` parameter.…

🛡️ **Root Cause**: The `yrange` parameter value is unsafely written into a **gnuplot file** in the `/tmp` directory.…

📦 **Affected**: **OpenTSDB** versions **through 2.4.0**. <br>🔍 **Component**: The time series database's plotting functionality involving gnuplot integration.

💀 **Capabilities**: Hackers gain **Remote Code Execution (RCE)**. <br>🔓 **Impact**: They can execute malware, steal sensitive info, modify data, and gain **full control** over the compromised system without credentials.

⚡ **Threshold**: **Low**. <br>🌐 **Access**: It is a **Remote** vulnerability. The description implies exploitation via the `yrange` parameter, suggesting it can be triggered over the network.…

📂 **Public Exp**: **Yes**. <br>🔗 **Resources**: PoCs exist on GitHub (e.g., `glowbase/CVE-2020-35476`, `vulhub`, `nuclei-templates`). PacketStorm also lists a related exploit file.

🔍 **Self-Check**: Scan for OpenTSDB instances running version **2.4.0 or earlier**. <br>🧪 **Test**: Use automated scanners like **Nuclei** with the specific CVE template.…

🩹 **Fix**: Upgrade to a version **newer than 2.4.0**. <br>📝 **Status**: The vulnerability was published in Dec 2020, implying patches or newer secure versions are available from the vendor.

🚧 **Workaround**: If patching is impossible, **restrict network access** to the OpenTSDB service. Implement **WAF rules** to block command injection patterns in the `yrange` parameter.…

🔥 **Urgency**: **HIGH**. <br>⚠️ **Reason**: It is a critical **RCE** vulnerability with public exploits. Immediate patching or mitigation is required to prevent unauthorized system control.