CVE-2021-43798 PoC — Grafana path traversal

Source

https://github.com/monke443/CVE-2021-43798

Associated Vulnerability

Title:Grafana path traversal (CVE-2021-43798)
Description:Grafana is an open-source platform for monitoring and observability. Grafana versions 8.0.0-beta1 through 8.3.0 (except for patched versions) iss vulnerable to directory traversal, allowing access to local files. The vulnerable URL path is: `<grafana_host_url>/public/plugins//`, where is the plugin ID for any installed plugin. At no time has Grafana Cloud been vulnerable. Users are advised to upgrade to patched versions 8.0.7, 8.1.8, 8.2.7, or 8.3.1. The GitHub Security Advisory contains more information about vulnerable URL paths, mitigation, and the disclosure timeline.

Description

 Arbitrary file read in Grafana allows an attacker to read server files by abusing a path traversal.

Readme

# CVE-2021-43798 Grafana-Arbitrary-File-Read (8.0.0 ~~ 8.3.0)

A vulnerability in Grafana (CVE-2021-43798) versions 8.0.0 ~~ 8.3.0  that allows an unauthenticated attacker to read arbitrary files from the server by leveraging a path traversal aimed towards the `/public/plugins/<plugin>` path to access sensitive files on the system.

# Usage

`python3 exploit.py --domain <example.com> --port <PORT>`


  1) The script automatically tests a lit of possibly vulnerable paths
  2) Interactive Shell: Once a vulnerable endpoint is found, the script prompts for a file path to read form the server.

# Shell Example:

![image](https://github.com/user-attachments/assets/991978c0-112c-4aa1-982e-b3fffa0520e3)


# References
[CVE-2021-43789](https://grafana.com/blog/2021/12/07/grafana-8.3.1-8.2.7-8.1.8-and-8.0.7-released-with-high-severity-security-fix/).



Disclaimer
This script is for educational purposes.

File Snapshot

Remarks

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