CVE-2021-37453 : Security Advisory and Response

A Cross Site Scripting (XSS) vulnerability has been identified in NCH Axon PBX v2.22 and earlier versions, specifically through the extension name (stored).

Understanding CVE-2021-37453

This section will cover the impact, technical details, and mitigation strategies related to CVE-2021-37453.

What is CVE-2021-37453?

CVE-2021-37453 is a security vulnerability in NCH Axon PBX that allows for Cross Site Scripting (XSS) attacks via the extension name (stored).

The Impact of CVE-2021-37453

The vulnerability could be exploited by attackers to execute malicious scripts in the context of a user's session, potentially leading to sensitive data theft, unauthorized actions, or further attacks.

Technical Details of CVE-2021-37453

This section will delve into the specific technical aspects of the vulnerability.

Vulnerability Description

The XSS flaw in NCH Axon PBX v2.22 and earlier versions exists in how the extension name is processed, allowing attackers to inject and execute scripts.

Affected Systems and Versions

NCH Axon PBX versions up to v2.22 are known to be affected by this security issue.

Exploitation Mechanism

By inputting malicious scripts into the extension name field, threat actors can craft URLs that, when accessed by victims, trigger the execution of the injected code.

Mitigation and Prevention

To protect systems and users from CVE-2021-37453, immediate actions and long-term security measures can be implemented.

Immediate Steps to Take

Users should update NCH Axon PBX to the latest version available, which addresses the XSS vulnerability and enhances overall security.

Long-Term Security Practices

Implementing input validation mechanisms, conducting regular security audits, and educating users about safe browsing practices can reduce the risk of XSS attacks.

Patching and Updates

Stay informed about security patches and updates released by NCH for Axon PBX to ensure that known vulnerabilities, including XSS issues, are promptly resolved.