CVE-2020-3351 Explained : Impact and Mitigation

A vulnerability in Cisco SD-WAN Solution Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to improper validation of fields in peering messages.

Understanding CVE-2020-3351

This CVE involves a high-severity vulnerability in Cisco SD-WAN Solution Software that could lead to a DoS attack.

What is CVE-2020-3351?

The vulnerability in Cisco SD-WAN Solution Software allows an attacker to trigger a DoS condition by sending crafted UDP messages.

The Impact of CVE-2020-3351

Attack Complexity: Low
Attack Vector: Network
Availability Impact: High
Base Score: 8.6 (High Severity)
Scope: Changed
No user interaction or privileges required

Technical Details of CVE-2020-3351

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from improper validation of fields in Cisco SD-WAN peering messages encapsulated in UDP packets.

Affected Systems and Versions

Product: Cisco SD-WAN Solution
Vendor: Cisco
Affected Version: n/a

Exploitation Mechanism

An attacker can exploit this vulnerability by sending specially crafted UDP messages to the targeted system.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2020-3351.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security training for employees to recognize and report potential threats.

Patching and Updates

Cisco may release patches or updates to address this vulnerability. Stay informed through official channels for remediation steps.