cve/2017/CVE-2017-9224.md

### [CVE-2017-9224](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9224)
![](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 Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in match_at() during regular expression searching. A logical error involving order of validation and access in match_at() could result in an out-of-bounds read from a stack buffer.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/balabit-deps/balabit-os-7-libonig
- https://github.com/balabit-deps/balabit-os-8-libonig
- https://github.com/onivim/esy-oniguruma