cve/2020/CVE-2020-11501.md

### [CVE-2020-11501](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11501)
![](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

GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.

### POC

#### Reference
- https://usn.ubuntu.com/4322-1/
- https://usn.ubuntu.com/4322-1/

#### Github
- https://github.com/garethr/snykout