### [CVE-2024-21494](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21494)
![](https://img.shields.io/static/v1?label=Product&message=github.com%2Fgreenpau%2Fcaddy-security&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%3C%20*%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Authentication%20Bypass%20by%20Spoofing&color=brighgreen)

### Description

All versions of the package github.com/greenpau/caddy-security are vulnerable to Authentication Bypass by Spoofing via the X-Forwarded-For header due to improper input sanitization. An attacker can spoof an IP address used in the user identity module (/whoami API endpoint). This could lead to unauthorized access if the system trusts this spoofed IP address.

### POC

#### Reference
- https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249859

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds
- https://github.com/trailofbits/publications