CVEs-PoC/2020/CVE-2020-23921.md

### [CVE-2020-23921](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-23921)
![](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 was discovered in fast_ber through v0.4. yy::yylex() in asn_compiler.hpp has a heap-based buffer over-read.

### POC

#### Reference
- https://github.com/Samuel-Tyler/fast_ber/issues/30

#### Github
- https://github.com/Live-Hack-CVE/CVE-2020-23921