CVE-2020-3110 : What You Need to Know

A vulnerability in the Cisco Discovery Protocol implementation for the Cisco Video Surveillance 8000 Series IP Cameras could allow remote code execution or denial of service attacks.

Understanding CVE-2020-3110

This CVE involves a security flaw in Cisco Video Surveillance 8000 Series IP Cameras that could be exploited by an adjacent attacker to execute code remotely or cause a reload of the affected IP Camera.

What is CVE-2020-3110?

The vulnerability arises from missing checks in processing Cisco Discovery Protocol messages, enabling attackers to send malicious packets to the IP Camera, potentially leading to remote code execution or unexpected reloads, resulting in denial of service.

The Impact of CVE-2020-3110

CVSS Base Score: 8.8 (High Severity)
Attack Vector: Adjacent Network
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
No Privileges Required
Scope: Unchanged
Attack Complexity: Low
User Interaction: None
The vulnerability requires the attacker to be in the same broadcast domain as the affected device.

Technical Details of CVE-2020-3110

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in the Cisco Discovery Protocol implementation allows unauthenticated attackers to exploit IP Cameras, potentially leading to remote code execution or denial of service.

Affected Systems and Versions

Affected Product: Cisco Video Surveillance 8000 Series IP Cameras
Vendor: Cisco
Vulnerable Versions: Less than 1.0.7 (unspecified custom version)

Exploitation Mechanism

Attackers can exploit the vulnerability by sending malicious Cisco Discovery Protocol packets to the targeted IP Camera within the same broadcast domain.

Mitigation and Prevention

Protecting systems from CVE-2020-3110 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the Video Surveillance 8000 Series IP Camera Firmware Release 1.0.7 or later to mitigate the vulnerability.
Implement network segmentation to limit broadcast domain exposure.
Monitor network traffic for any suspicious activity related to Cisco Discovery Protocol.

Long-Term Security Practices

Regularly update firmware and security patches for all network devices.
Conduct security training for personnel to recognize and respond to potential security threats.

Patching and Updates

Cisco has released a fix in Video Surveillance 8000 Series IP Camera Firmware Release 1.0.7 and later to address this vulnerability.