cve/2021/CVE-2021-20231.md

### [CVE-2021-20231](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20231)
![](https://img.shields.io/static/v1?label=Product&message=gnutls&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=gnutls%203.7.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-416&color=brightgreen)

### Description

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/AniketKumar090/Tyk-Vulnerability-Scanner
- https://github.com/Azure/publish-security-assessments
- https://github.com/GitHubForSnap/ssmtp-gael
- https://github.com/actions-marketplace-validations/Azure_publish-security-assessments
- https://github.com/epequeno/devops-demo
- https://github.com/onzack/trivy-multiscanner