CVE-2022-46423 : Security Advisory and Response

An exploitable firmware modification vulnerability was discovered on the Netgear WNR2000v1 router, allowing attackers to execute arbitrary code or cause a Denial of Service (DoS).

Understanding CVE-2022-46423

This CVE involves a firmware modification vulnerability on the Netgear WNR2000v1 router.

What is CVE-2022-46423?

The vulnerability allows attackers to conduct a MITM attack to modify user-uploaded firmware images, bypass CRC check, and execute arbitrary code or cause a DoS.

The Impact of CVE-2022-46423

The impact includes the potential execution of arbitrary code or triggering a Denial of Service attack on affected devices.

Technical Details of CVE-2022-46423

The following technical details are associated with CVE-2022-46423.

Vulnerability Description

The vulnerability permits attackers to modify firmware and bypass security checks, leading to unauthorized code execution or DoS.

Affected Systems and Versions

This vulnerability affects Netgear WNR2000v1 routers running version v1.2.3.7 and earlier.

Exploitation Mechanism

Attackers exploit this vulnerability through a Man-in-the-Middle attack to manipulate firmware images and evade CRC verification.

Mitigation and Prevention

Protect your systems against CVE-2022-46423 with the following mitigation strategies.

Immediate Steps to Take

Users should update their Netgear WNR2000v1 router firmware to the latest version and avoid unsecured networks.

Long-Term Security Practices

Implement network segmentation, regularly monitor for unauthorized modifications, and educate users on secure firmware update practices.

Patching and Updates

Stay vigilant for security updates from Netgear and apply patches promptly to safeguard against potential exploits.