CVE-2021-45563 : Security Advisory and Response

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects RBK752 before 3.2.16.6, RBR750 before 3.2.16.6, RBS750 before 3.2.16.6, RBK852 before 3.2.16.6, RBR850 before 3.2.16.6, and RBS850 before 3.2.16.6.

Understanding CVE-2021-45563

This CVE involves command injection vulnerabilities in certain NETGEAR devices.

What is CVE-2021-45563?

CVE-2021-45563 refers to a command injection vulnerability in NETGEAR devices that allows an authenticated user to execute arbitrary commands on affected devices.

The Impact of CVE-2021-45563

The impact of this vulnerability is rated as HIGH in terms of confidentiality, integrity, availability, and base severity according to CVSS v3.1 metrics.

Technical Details of CVE-2021-45563

This section provides in-depth technical details about the CVE.

Vulnerability Description

The vulnerability allows an authenticated user to perform command injection on affected devices, potentially leading to unauthorized access and control.

Affected Systems and Versions

RBK752 before 3.2.16.6
RBR750 before 3.2.16.6
RBS750 before 3.2.16.6
RBK852 before 3.2.16.6
RBR850 before 3.2.16.6
RBS850 before 3.2.16.6

Exploitation Mechanism

The vulnerability can be exploited by an attacker with high privileges and adjacent network access, posing a significant threat to device security.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2021-45563.

Immediate Steps to Take

Update affected devices to the patched versions.
Implement strong authentication mechanisms to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor and update device firmware to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Refer to the vendor's security advisory for detailed patching instructions.