cve/2021/CVE-2021-1588.md

### [CVE-2021-1588](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1588)
![](https://img.shields.io/static/v1?label=Product&message=Cisco%20NX-OS%20Software%20&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-126&color=brighgreen)

### Description

A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature 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 input validation when an affected device is processing an MPLS echo-request or echo-reply packet. An attacker could exploit this vulnerability by sending malicious MPLS echo-request or echo-reply packets to an interface that is enabled for MPLS forwarding on the affected device. A successful exploit could allow the attacker to cause the MPLS OAM 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/p1ay8y3ar/cve_monitor