CVEs-PoC/2020/CVE-2020-25613.md

### [CVE-2020-25613](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25613)
![](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

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/metapox/CVE-2020-25613
- https://github.com/spaluchowski/metadata-server-tests