CVEs-PoC/2017/CVE-2017-12837.md

### [CVE-2017-12837](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12837)
![](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

Heap-based buffer overflow in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (out-of-bounds write) via a regular expression with a '\N{}' escape and the case-insensitive modifier.

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpujul2020.html

#### Github
- https://github.com/yfoelling/yair