cve/2023/CVE-2023-36812.md

### [CVE-2023-36812](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-36812)
![](https://img.shields.io/static/v1?label=Product&message=opentsdb&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3C%202.4.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-74%3A%20Improper%20Neutralization%20of%20Special%20Elements%20in%20Output%20Used%20by%20a%20Downstream%20Component%20('Injection')&color=brighgreen)

### Description

OpenTSDB is a open source, distributed, scalable Time Series Database (TSDB). OpenTSDB is vulnerable to Remote Code Execution vulnerability by writing user-controlled input to Gnuplot configuration file and running Gnuplot with the generated configuration. This issue has been patched in  commit `07c4641471c` and further refined in commit `fa88d3e4b`. These patches are available in the `2.4.2` release. Users are advised to upgrade. User unable to upgrade may disable Gunuplot via the config option`tsd.core.enable_ui = true` and remove the shell files `mygnuplot.bat` and `mygnuplot.sh`.

### POC

#### Reference
- http://packetstormsecurity.com/files/174570/OpenTSDB-2.4.1-Unauthenticated-Command-Injection.html
- https://github.com/OpenTSDB/opentsdb/commit/07c4641471c6f5c2ab5aab615969e97211eb50d9

#### Github
- https://github.com/ErikWynter/opentsdb_key_cmd_injection
- https://github.com/nomi-sec/PoC-in-GitHub