### [CVE-2017-6181](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6181)
![](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

The parse_char_class function in regparse.c in the Onigmo (aka Oniguruma-mod) regular expression library, as used in Ruby 2.4.0, allows remote attackers to cause a denial of service (deep recursion and application crash) via a crafted regular expression.

### POC

#### Reference
- https://bugs.ruby-lang.org/issues/13234

#### Github
No PoCs found on GitHub currently.