Number: AV20-028
Date: 6 February 2020
On 5 February 2020 Cisco released security advisories to address vulnerabilities affecting a number of Cisco products. Of note is a vulnerability that involves the implementation of the proprietary Cisco Discovery Protocol (CDP) that is used to discover information about locally attached Cisco equipment. To exploit this vulnerability, an actor must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Some of these vulnerabilities could allow an unauthenticated actor to execute arbitrary code with root privileges on an affected device.
The Cyber Centre encourages users and administrators to review the Cisco Security Advisories and Alerts webpage at the link below and apply the necessary updates:
https://tools.cisco.com/security/center/publicationListing.x
Note to Readers
The Canadian Centre for Cyber Security (Cyber Centre) operates as part of the Communications Security Establishment. We are Canada’s national authority on cyber security and we lead the government’s response to cyber security events. As Canada's national computer security incident response team, the Cyber Centre works in close collaboration with government departments, critical infrastructure, Canadian businesses and international partners to prepare for, respond to, mitigate, and recover from cyber events. We do this by providing authoritative advice and support, and coordinating information sharing and incident response. The Cyber Centre is outward-facing, welcoming partnerships that help build a stronger, more resilient cyber space in Canada.