cve/2023/CVE-2023-6534.md

### [CVE-2023-6534](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6534)
![](https://img.shields.io/static/v1?label=Product&message=FreeBSD&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=14.0-RELEASE%3C%20p2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

In versions of FreeBSD 14.0-RELEASE before 14-RELEASE-p2, FreeBSD 13.2-RELEASE before 13.2-RELEASE-p7 and FreeBSD 12.4-RELEASE before 12.4-RELEASE-p9, the pf(4) packet filter incorrectly validates TCP sequence numbers.  This could allow a malicious actor to execute a denial-of-service attack against hosts behind the firewall.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds