CVE-2021-38412 : Vulnerability Insights and Analysis

A critical vulnerability impacting Digi PortServer TS 16 that allows unauthorized access without authentication.

Understanding CVE-2021-38412

A detailed overview of the vulnerability, its impacts, affected systems, and mitigation techniques.

What is CVE-2021-38412?

The vulnerability in Digi PortServer TS 16 allows attackers to manipulate community strings and gain control without authentication.

The Impact of CVE-2021-38412

The vulnerability has a critical severity rating with high confidentiality and integrity impacts, enabling attackers to compromise the device easily.

Technical Details of CVE-2021-38412

Exploring the specific technical aspects of the vulnerability and its implications.

Vulnerability Description

Improperly formatted POST requests to the device's web servers do not require authentication, leading to potential abuse of SNMP services.

Affected Systems and Versions

Affected Product: PortServer TS 16
Vendor: Digi International
Vulnerable Versions: Firmware 82000684 and below

Exploitation Mechanism

Attackers can execute unauthorized actions via properly crafted HTTP and HTTPS requests, bypassing authentication.

Mitigation and Prevention

Guidelines on mitigating the vulnerability and preventive measures to secure affected systems.

Immediate Steps to Take

Upgrade to a new supported product as PortServer TS 16 was discontinued in 2016
Contact Digi for extended support if upgrading is not feasible

Long-Term Security Practices

Implement network segmentation to restrict access
Regularly monitor device logs for suspicious activities
Stay informed about security best practices

Patching and Updates

Regularly check for firmware updates and security patches to address known vulnerabilities.