CVE-2021-45633 : Security Advisory and Response

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 4.6.3.6, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.17.12, RBS850 before 3.2.17.12, RBK752 before 3.2.17.12, and RBK852 before 3.2.17.12.

Understanding CVE-2021-45633

This CVE involves a critical vulnerability impacting NETGEAR devices due to command injection by an unauthenticated attacker.

What is CVE-2021-45633?

CVE-2021-45633 is a security vulnerability that allows an unauthenticated attacker to execute commands on the affected NETGEAR devices.

The Impact of CVE-2021-45633

The vulnerability has a CVSS base score of 9.6, indicating a critical severity level with high impacts on confidentiality, integrity, and availability of the devices.

Technical Details of CVE-2021-45633

This section covers technical aspects of the CVE.

Vulnerability Description

The vulnerability allows unauthenticated attackers to inject and execute arbitrary commands on the affected NETGEAR devices.

Affected Systems and Versions

CBR750 before 4.6.3.6
RBR750 before 3.2.17.12
RBR850 before 3.2.17.12
RBS750 before 3.2.17.12
RBS850 before 3.2.17.12
RBK752 before 3.2.17.12
RBK852 before 3.2.17.12

Exploitation Mechanism

The vulnerability can be exploited by sending malicious commands to the affected devices without the need for authentication.

Mitigation and Prevention

Immediate action and long-term security practices to address the CVE.

Immediate Steps to Take

Apply patches provided by NETGEAR promptly.
Implement network segmentation to reduce the attack surface.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and security patches.
Conduct security training for device users to raise awareness of potential threats.

Patching and Updates

NETGEAR has released patches for the affected devices to address this vulnerability.