CVE-2021-20170 : What You Need to Know

A detailed analysis of CVE-2021-20170, a vulnerability found in Netgear RAX43 version 1.0.3.96 that allows unauthorized manipulation of configuration backups due to hardcoded credentials.

Understanding CVE-2021-20170

This section provides an overview of the vulnerability and its impact.

What is CVE-2021-20170?

Netgear RAX43 version 1.0.3.96 utilizes hardcoded credentials, enabling users to modify encrypted configuration backups. The encryption relies on a password-protected zip file with a fixed password.

The Impact of CVE-2021-20170

The vulnerability allows users to access and change settings within configuration backups that were not intended to be modified. By manipulating the backups, unauthorized changes may occur, posing a risk to the integrity of the system.

Technical Details of CVE-2021-20170

This section delves into the specifics of the vulnerability affecting Netgear RAX43 version 1.0.3.96.

Vulnerability Description

The hardcoded credentials in Netgear RAX43 version 1.0.3.96 enable users to decrypt configuration backups, make unauthorized changes, re-encrypt the configuration, and restore altered settings.

Affected Systems and Versions

The vulnerability impacts Netgear RAX43 version 1.0.3.96 specifically, exposing systems with this version to potential unauthorized configuration modifications.

Exploitation Mechanism

Attackers can exploit the hardcoded credentials to gain access to encrypted configuration backups, modify settings, and restore altered configurations, leading to unauthorized changes.

Mitigation and Prevention

This section outlines measures to mitigate the risks associated with CVE-2021-20170.

Immediate Steps to Take

Users should immediately change the hardcoded password in the encryption mechanism to prevent unauthorized access to configuration backups and modifications.

Long-Term Security Practices

Implementing strong password policies, conducting regular security assessments, and monitoring configuration changes can enhance the security posture to prevent similar vulnerabilities.

Patching and Updates

Netgear should release an update that removes the hardcoded credentials or enforces password changes to address the vulnerability in version 1.0.3.96.