CVE-2023-3336 Explained : Impact and Mitigation

This CVE, assigned by Moxa, involves a user enumeration vulnerability in the TN-5900 Series products. The vulnerability could potentially allow remote attackers to identify valid users during password recovery via the web login page, potentially leading to brute force attacks with known users.

Understanding CVE-2023-3336

This section delves deeper into the nature of the CVE-2023-3336 vulnerability.

What is CVE-2023-3336?

The CVE-2023-3336 vulnerability specifically affects TN-5900 Series devices with a version of 3.3 and earlier. It exposes these devices to a user enumeration vulnerability that could be exploited by malicious actors for unauthorized access.

The Impact of CVE-2023-3336

The impact of this vulnerability, as categorized under CAPEC-580 (Application Footprinting), highlights the potential risks associated with user enumeration attacks. Such attacks could compromise the security and integrity of the affected devices and networks.

Technical Details of CVE-2023-3336

This section provides more technical insights into the CVE-2023-3336 vulnerability.

Vulnerability Description

TN-5900 Series devices running version 3.3 and earlier are susceptible to a user enumeration vulnerability. This flaw enables attackers to ascertain the validity of user credentials during password recovery, paving the way for potential brute force attacks.

Affected Systems and Versions

The vulnerability impacts TN-5900 Series devices with a version less than or equal to 3.3, specifically version 1.0.

Exploitation Mechanism

The exploitation of this vulnerability occurs through the web login page, allowing remote attackers to test user validity and potentially launch brute force attacks against known users.

Mitigation and Prevention

Here are the steps recommended to mitigate and prevent the CVE-2023-3336 vulnerability.

Immediate Steps to Take

To address this vulnerability, users of affected TN-5900 Series devices should upgrade to firmware version 3.4 or later, as provided by Moxa.

Long-Term Security Practices

In addition to applying the necessary patches, it is crucial for organizations to implement robust security practices, such as regular security updates, network monitoring, and user authentication controls.

Patching and Updates

Regularly updating firmware and applying security patches provided by the vendor, in this case, Moxa, is essential to prevent exploitation of known vulnerabilities like CVE-2023-3336. This proactive approach helps in maintaining the security posture of the devices and the overall network infrastructure.