A vulnerability in the Link Layer Discovery Protocol (LLDP) for Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, adjacent attacker to disable switching on a small form-factor pluggable (SFP) interface. This vulnerability is due to incomplete validation of the source of a received LLDP packet. An attacker could exploit this vulnerability by sending a crafted LLDP packet on an SFP interface to an affected device. A successful exploit could allow the attacker to disable switching on the SFP interface, which could disrupt network traffic.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2021-02-24T19:30:36.992019Z

Updated: 2024-09-17T00:37:03.695Z

Reserved: 2020-11-13T00:00:00

Link: CVE-2021-1231

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-02-24T20:15:13.193

Modified: 2023-11-07T03:27:45.573

Link: CVE-2021-1231

cve-icon Redhat

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