cve/2024/CVE-2024-20446.md

### [CVE-2024-20446](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-20446)
![](https://img.shields.io/static/v1?label=Product&message=Cisco%20NX-OS%20Software&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=10.2%5C(1%5C)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=10.2%5C(1q%5C)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=10.2(1)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=10.2(1q)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=8.2%5C(11%5C)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=8.2(11)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=9.3%5C(9%5C)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=9.3(9)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=NULL%20Pointer%20Dereference&color=brightgreen)

### Description

A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition.

### POC

#### Reference
No PoCs from references.

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