CVE-2020-3506 Explained : Impact and Mitigation

Cisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Remote Code Execution and Denial of Service Vulnerabilities

Understanding CVE-2020-3506

Multiple vulnerabilities in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to execute code remotely or cause a reload of an affected IP camera.

What is CVE-2020-3506?

Vulnerabilities in Cisco Discovery Protocol for Cisco Video Surveillance 8000 Series IP Cameras
Allows unauthenticated, adjacent attacker to execute code or cause camera reload

The Impact of CVE-2020-3506

High severity with a CVSS base score of 8.8
Attack vector: Adjacent network
Exploitation could lead to remote code execution or denial of service

Technical Details of CVE-2020-3506

Vulnerability Description

Missing checks in Cisco Discovery Protocol packet processing
Attacker can exploit by sending a malicious packet to the IP camera

Affected Systems and Versions

Product: Cisco Video Surveillance 8000 Series IP Cameras
Version: Not applicable

Exploitation Mechanism

Attacker must be in the same broadcast domain as the affected device
Layer 2 adjacent access required

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-provided patches and updates
Implement network segmentation to limit broadcast domain exposure

Long-Term Security Practices

Regularly monitor and update network security measures
Conduct security training for staff on identifying and responding to potential threats

Patching and Updates

Refer to the vendor's security advisory for specific patch details