CVE-2021-20167 : Vulnerability Insights and Analysis

Netgear RAX43 version 1.0.3.96 has been identified with a critical command injection vulnerability through the readycloud cgi application. This CVE poses a serious security risk that could allow an attacker to execute arbitrary commands via the 'name' parameter.

Understanding CVE-2021-20167

This section will delve into the specifics of CVE-2021-20167, outlining the vulnerability, its impact, technical details, and mitigation steps.

What is CVE-2021-20167?

The CVE-2021-20167 vulnerability is characterized by a command injection weakness in Netgear RAX43's version 1.0.3.96. The flaw resides in the readycloud cgi application, enabling threat actors to run malicious commands by exploiting the 'name' parameter.

The Impact of CVE-2021-20167

As a command injection vulnerability, CVE-2021-20167 allows unauthorized individuals to execute arbitrary commands within the affected system. If successfully exploited, attackers could gain full control over the device, leading to data breaches, system compromise, and other malicious activities.

Technical Details of CVE-2021-20167

In this section, we will explore the specific technical aspects of the CVE, including the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

Netgear RAX43 version 1.0.3.96 is susceptible to command injection due to inadequate input validation on the 'name' parameter within the readycloud cgi application. This enables attackers to inject and execute arbitrary commands on the device.

Affected Systems and Versions

The command injection vulnerability impacts Netgear RAX43 devices running version 1.0.3.96. Users with this specific version are at risk of exploitation and should take immediate action to secure their systems.

Exploitation Mechanism

Threat actors can leverage the vulnerable 'name' parameter in the readycloud cgi application to send crafted input strings containing malicious commands. Upon successful exploitation, attackers can execute arbitrary code on the device.

Mitigation and Prevention

Outlined here are the crucial steps to mitigate the risks associated with CVE-2021-20167, including immediate actions and long-term security practices to safeguard against such vulnerabilities.

Immediate Steps to Take

Update Netgear RAX43 firmware to the latest version that includes a patch for the command injection vulnerability.
Restrict network access to the device and implement firewall rules to prevent unauthorized access.
Monitor network traffic for any suspicious activities that could indicate an ongoing compromise.

Long-Term Security Practices

Regularly update and patch all devices within your network to plug security loopholes.
Conduct routine security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate network users on best security practices and the importance of system hygiene to prevent successful attacks.

Patching and Updates

Refer to official Netgear channels for patch releases and firmware updates addressing the CVE-2021-20167 vulnerability. Stay informed about security advisories and promptly apply patches to ensure the protection of your Netgear RAX43 device.