CVE-2021-37462 : Vulnerability Insights and Analysis

A Cross Site Scripting (XSS) vulnerability has been identified in NCH Axon PBX v2.22 and earlier versions, allowing attackers to execute malicious scripts via reflected inputs.

Understanding CVE-2021-37462

This section will provide an overview of the CVE-2021-37462 vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-37462?

The CVE-2021-37462 vulnerability is a Cross Site Scripting (XSS) flaw present in NCH Axon PBX v2.22 and earlier, enabling threat actors to inject and execute malicious code by reflecting user-supplied data.

The Impact of CVE-2021-37462

Exploitation of this vulnerability can lead to unauthorized access, data theft, and potentially complete system compromise. Attackers can craft specially-crafted links to exploit this XSS weakness.

Technical Details of CVE-2021-37462

In this section, we delve into the specifics of the vulnerability, including the description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The XSS vulnerability in NCH Axon PBX v2.22 and prior versions arises from inadequate input validation on the /ipblacklist?errorip= page, allowing attackers to inject malicious scripts into the application.

Affected Systems and Versions

NCH Axon PBX versions 2.22 and earlier are confirmed to be impacted by this XSS flaw, putting users of these versions at risk of exploitation.

Exploitation Mechanism

Threat actors can exploit this vulnerability by tricking users into clicking on specifically crafted links that contain malicious scripts, leading to the execution of unauthorized actions on the target system.

Mitigation and Prevention

This section outlines steps to mitigate the risk posed by CVE-2021-37462 and prevent potential exploitation.

Immediate Steps to Take

Users are advised to update NCH Axon PBX to a patched version, implement security best practices, and educate users about phishing and malicious links to mitigate the risk of exploitation.

Long-Term Security Practices

Employing a robust security posture, conducting regular security assessments, and staying informed about emerging threats can enhance an organization's overall security resilience.

Patching and Updates

Regularly applying security patches and updates provided by NCH for Axon PBX can help address known vulnerabilities and protect systems from exploitation.