cve/2018/CVE-2018-20340.md

### [CVE-2018-20340](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20340)
![](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

Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use. It is not possible to perform this attack with a genuine YubiKey.

### POC

#### Reference
- https://blog.inhq.net/posts/yubico-libu2f-host-vuln-part1/

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