### [CVE-2024-20339](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-20339)
![](https://img.shields.io/static/v1?label=Product&message=Cisco%20Firepower%20Threat%20Defense%20Software&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.10%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.11%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.12%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.13%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.14%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.15%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.16%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.17%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.18%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.4%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.5%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.6%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.7%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.8%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.3.9%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.10%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.11%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.12%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.13%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.14%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.15%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.16%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.17%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.4%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.5%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.6%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.7%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.8%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.4.0.9%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.4%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.5%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.5.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.5.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.7%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.7.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.6.7.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.7.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.7.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.7.0.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.7.0.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.1.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.2.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.4%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.5%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.6%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0.6.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.1.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.1.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.1.0.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.4%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.4.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.5%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.5.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.2.5.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.3.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.3.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.3.1.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.3.1.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=NULL%20Pointer%20Dereference&color=brightgreen)

### Description

A vulnerability in the TLS processing feature of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to an issue that occurs when TLS traffic is processed. An attacker could exploit this vulnerability by sending certain TLS traffic over IPv4 through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition and impacting traffic to and through the affected device.

### POC

#### Reference
No PoCs from references.

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