CVE-2021-45534 : Exploit Details and Defense Strategies

Certain NETGEAR devices are affected by command injection by an authenticated user. This impacts various router models before specific firmware versions.

Understanding CVE-2021-45534

This CVE involves command injection vulnerability in certain NETGEAR routers, potentially allowing an authenticated user to execute arbitrary commands.

What is CVE-2021-45534?

The vulnerability enables authenticated users to inject commands into affected NETGEAR routers, leading to potential unauthorized actions that may compromise the device's security.

The Impact of CVE-2021-45534

The vulnerability has a CVSS v3.1 base score of 7.8, indicating a high severity issue with significant impacts on confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2021-45534

This section provides technical insights into the vulnerability affecting NETGEAR routers.

Vulnerability Description

The vulnerability allows authenticated users to perform command injection on certain NETGEAR routers, potentially leading to unauthorized access and control of the devices.

Affected Systems and Versions

AC2100, AC2400, AC2600, D7000, R6220, R6230, R6260, R6330, R6350, R6700v2, R6800, R6850, R6900v2, R7200, R7350, R7400, and R7450 models before specific firmware versions.

Exploitation Mechanism

The vulnerability can be exploited by authenticated users to execute arbitrary commands on the affected devices, posing a significant security risk.

Mitigation and Prevention

To address CVE-2021-45534, users and administrators should take immediate and long-term security measures to safeguard their NETGEAR routers.

Immediate Steps to Take

Update affected routers to the latest firmware versions that contain patches for the vulnerability.
Monitor network traffic for any suspicious activity that may indicate exploitation of the vulnerability.
Restrict access to vulnerable devices to trusted users only.

Long-Term Security Practices

Regularly update firmware and security patches on all network devices to prevent exploitation of known vulnerabilities.
Implement strong authentication mechanisms and access controls to limit unauthorized access to network devices.
Conduct regular security audits and assessments to identify and address potential security weaknesses.

Patching and Updates

NETGEAR has released firmware updates addressing the command injection vulnerability. Users should promptly apply these patches to mitigate the risks associated with CVE-2021-45534.