cve/2023/CVE-2023-46445.md

### [CVE-2023-46445](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46445)
![](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 in AsyncSSH before 2.14.1 allows attackers to control the extension info message (RFC 8308) via a man-in-the-middle attack, aka a "Rogue Extension Negotiation."

### POC

#### Reference
- http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html
- https://github.com/advisories/GHSA-cfc2-wr2v-gxm5
- https://github.com/ronf/asyncssh/blob/develop/docs/changes.rst
- https://github.com/ronf/asyncssh/security/advisories/GHSA-cfc2-wr2v-gxm5

#### Github
- https://github.com/RUB-NDS/Terrapin-Artifacts