CVE-2021-20120 : What You Need to Know

This CVE-2021-20120 vulnerability affects the Arris Surfboard SB8200. The flaw allows attackers to conduct cross-site request forgery attacks, enabling unauthorized configuration changes like modifying the administrative password without user consent.

Understanding CVE-2021-20120

This section will delve into the specifics of the CVE-2021-20120 vulnerability.

What is CVE-2021-20120?

The CVE-2021-20120 vulnerability involves the absence of protections against cross-site request forgery attacks in the administration web interface of the Arris Surfboard SB8200. It empowers malicious actors to alter device configurations without user permission.

The Impact of CVE-2021-20120

The impact of this vulnerability is significant as threat actors can exploit it to compromise device security by making unauthorized changes, posing risks to user privacy and network integrity.

Technical Details of CVE-2021-20120

This section will provide technical insights into CVE-2021-20120.

Vulnerability Description

The vulnerability lies in the lack of CSRF protections in the Arris Surfboard SB8200 web interface, allowing attackers to manipulate device configurations undetected.

Affected Systems and Versions

Arris Surfboard SB8200 devices with version AB01.02.053.01_112320_193.0A.NSH are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this flaw by crafting malicious requests to the device's web interface, tricking users into unknowingly triggering configuration changes.

Mitigation and Prevention

This section covers the steps to mitigate the CVE-2021-20120 vulnerability.

Immediate Steps to Take

Users should change default passwords, monitor device logs for suspicious activities, and restrict access to the administration interface to trusted IP addresses.

Long-Term Security Practices

Regularly update firmware, conduct security assessments, and implement network segmentation to minimize the attack surface and enhance overall security.

Patching and Updates

Stay informed about security updates from the vendor, apply patches promptly, and follow best practices to secure the Arris Surfboard SB8200 against potential threats.