cve/2018/CVE-2018-20434.md

### [CVE-2018-20434](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20434)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the $_POST['community'] parameter to html/pages/addhost.inc.php during creation of a new device, and then making a /ajax_output.php?id=capture&format=text&type=snmpwalk&hostname=localhost request that triggers html/includes/output/capture.inc.php command mishandling.

### POC

#### Reference
- http://packetstormsecurity.com/files/153188/LibreNMS-addhost-Command-Injection.html
- http://packetstormsecurity.com/files/153448/LibreNMS-1.46-addhost-Remote-Code-Execution.html

#### Github
- https://github.com/0xT11/CVE-POC
- https://github.com/ARPSyndicate/cvemon
- https://github.com/DSO-Lab/pocscan
- https://github.com/ayadim/exploitBox
- https://github.com/mhaskar/CVE-2018-20434
- https://github.com/spart9k/INT-18