CVEs-PoC/2020/CVE-2020-23914.md

### [CVE-2020-23914](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-23914)
![](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 cpp-peglib through v0.1.12. A NULL pointer dereference exists in the peg::AstOptimizer::optimize() located in peglib.h. It allows an attacker to cause Denial of Service.

### POC

#### Reference
- https://github.com/yhirose/cpp-peglib/issues/121

#### Github
- https://github.com/nicovank/bugbench