CVE-2022-20930 : What You Need to Know

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to overwrite and possibly corrupt files on an affected system.

Understanding CVE-2022-20930

This article discusses the details and impacts of CVE-2022-20930, affecting Cisco SD-WAN Software.

What is CVE-2022-20930?

CVE-2022-20930 is a vulnerability in Cisco SD-WAN Software that enables an authenticated, local attacker to execute arbitrary commands, leading to file corruption and denial of service.

The Impact of CVE-2022-20930

The vulnerability could result in unauthorized overwriting of system files, potentially causing a denial of service condition on the affected system.

Technical Details of CVE-2022-20930

Let's delve into the technical aspects of CVE-2022-20930 to understand the vulnerability further.

Vulnerability Description

The vulnerability arises due to insufficient input validation, allowing attackers to inject commands as the root user, leading to file corruption.

Affected Systems and Versions

Cisco SD-WAN vManage is affected by this vulnerability across all versions.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting arbitrary commands that are executed with root user privileges.

Mitigation and Prevention

To protect systems from CVE-2022-20930, immediate steps and long-term security practices are essential.

Immediate Steps to Take

Ensure access controls are in place, monitor system files for unauthorized changes, and restrict user privileges to mitigate the risk.

Long-Term Security Practices

Regular security updates, security training for personnel, and implementing least privilege access are crucial for long-term defense.

Patching and Updates

Apply relevant patches and updates provided by Cisco to address the vulnerability effectively.