CVEs-PoC/2021/CVE-2021-33318.md

### [CVE-2021-33318](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33318)
![](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 Input Validation Vulnerability exists in Joel Christner .NET C# packages WatsonWebserver, IpMatcher 1.0.4.1 and below (IpMatcher) and 4.1.3 and below (WatsonWebserver) due to insufficient validation of input IP addresses and netmasks against the internal Matcher list of IP addresses and subnets.

### POC

#### Reference
- https://github.com/kaoudis/advisories/blob/main/0-2021.md

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