CVEs-PoC/2021/CVE-2021-23386.md

### [CVE-2021-23386](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23386)
![](https://img.shields.io/static/v1?label=Product&message=dns-packet&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Remote%20Memory%20Exposure&color=brightgreen)

### Description

This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/mhc-cs/cs-316-project-primespiders