CVEs-PoC/2021/CVE-2021-29258.md

### [CVE-2021-29258](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29258)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.

### POC

#### Reference
- https://blog.envoyproxy.io

#### Github
No PoCs found on GitHub currently.