cve/2015/CVE-2015-3217.md

### [CVE-2015-3217](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3217)
![](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

PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty matches, which might allow remote attackers to cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by /^(?:(?(1)\\.|([^\\\\W_])?)+)+$/.

### POC

#### Reference
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1228283

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/RedHatSatellite/satellite-host-cve