CVE-2023-33237 : Vulnerability Insights and Analysis

A detailed overview of CVE-2023-33237 highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2023-33237

Get insights into the authentication bypass vulnerability affecting TN-5900 Series firmware versions 3.3 and below.

What is CVE-2023-33237?

TN-5900 Series firmware version v3.3 and earlier is susceptible to an improper authentication vulnerability, allowing unauthorized low-privileged APIs to execute restricted actions, posing a risk of exploitation.

The Impact of CVE-2023-33237

The vulnerability, categorized as CAPEC-115 Authentication Bypass, carries a CVSS v3.1 base score of 8.8 (High) with severe impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2023-33237

Explore the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The flaw stems from insufficient authentication measures in the web API handler, enabling unauthorized actions by low-privileged APIs.

Affected Systems and Versions

TN-5900 Series firmware version v3.3 and prior are impacted, particularly version 1.0 with a custom version type.

Exploitation Mechanism

Malicious actors could exploit the vulnerability by leveraging low-privileged APIs to execute actions restricted to high-privileged APIs, potentially leading to unauthorized use.

Mitigation and Prevention

Discover the necessary steps to mitigate the risk and secure the affected systems.

Immediate Steps to Take

Moxa has provided a solution to address the vulnerability, advising users to upgrade TN-5900 Series firmware to version 3.4 or higher.

Long-Term Security Practices

Implement robust authentication mechanisms, conduct regular security assessments, and stay informed about firmware updates to prevent similar vulnerabilities.

Patching and Updates

Regularly monitor vendor advisories and promptly apply patches and firmware updates to safeguard against potential exploits.