CVE-2021-37455 : What You Need to Know

A Cross Site Scripting (XSS) vulnerability has been discovered in NCH Axon PBX v2.22 and earlier versions through the outbound dialing plan. This vulnerability could allow attackers to execute malicious scripts on the victim's browser.

Understanding CVE-2021-37455

This section will provide insights into the nature and impact of the CVE-2021-37455 vulnerability.

What is CVE-2021-37455?

The CVE-2021-37455 CVE describes a Cross Site Scripting (XSS) flaw present in NCH Axon PBX v2.22 and earlier versions. Attackers can exploit this vulnerability through the outbound dialing plan to inject and execute malicious scripts on affected systems.

The Impact of CVE-2021-37455

The impact of CVE-2021-37455 is significant as it allows threat actors to perform various malicious activities, such as stealing sensitive information, session hijacking, or delivering malware to unsuspecting users.

Technical Details of CVE-2021-37455

In this section, we will delve into the specific technical aspects of the CVE-2021-37455 vulnerability.

Vulnerability Description

The vulnerability arises due to inadequate input validation in the outbound dialing plan feature of NCH Axon PBX v2.22 and prior versions, enabling attackers to inject arbitrary scripts.

Affected Systems and Versions

NCH Axon PBX v2.22 and earlier versions are affected by this XSS vulnerability. Users of these versions are at risk of exploitation until a patch is applied.

Exploitation Mechanism

Attackers can exploit CVE-2021-37455 by crafting and injecting malicious scripts through the outbound dialing plan, which are then executed in the context of the victim's browser.

Mitigation and Prevention

This section provides guidance on mitigating the risks associated with CVE-2021-37455 and preventing potential exploitation.

Immediate Steps to Take

Users are advised to update NCH Axon PBX to the latest version available, which contains patches to address the XSS vulnerability. Additionally, monitoring network traffic for suspicious activities can help detect potential exploitation attempts.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security assessments, and educating users on the risks of XSS attacks are essential for long-term protection against such vulnerabilities.

Patching and Updates

Regularly applying security patches and updates released by NCH for the Axon PBX software is crucial to ensure the system is protected against known vulnerabilities and potential exploits.