CVE-2019-9098 : Security Advisory and Response

A vulnerability has been identified in various Moxa devices that could allow malicious actors to launch a Denial of Service (DoS) attack by exploiting an integer overflow in the internal web server.

Understanding CVE-2019-9098

This CVE affects Moxa devices including MGate MB3170, MB3270, MB3280, MB3480, MB3660, and MB3180.

What is CVE-2019-9098?

An integer overflow vulnerability in the internal web server of the affected Moxa devices enables attackers to execute a DoS attack.

The Impact of CVE-2019-9098

The vulnerability has a CVSS base score of 7.5 (High severity) with a LOW attack complexity and HIGH availability impact.

Technical Details of CVE-2019-9098

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The issue allows remote attackers to trigger a DoS condition due to an integer overflow in the built-in web server of the affected Moxa devices.

Affected Systems and Versions

Moxa MGate MB3170 and MB3270 devices before 4.1
Moxa MGate MB3280 and MB3480 devices before 3.1
Moxa MGate MB3660 devices before 2.3
Moxa MGate MB3180 devices before 2.1

Exploitation Mechanism

The vulnerability can be exploited remotely by attackers to disrupt the normal operation of the affected devices through a DoS attack.

Mitigation and Prevention

Protecting systems from CVE-2019-9098 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches provided by Moxa to address the vulnerability.
Implement network segmentation to limit exposure of the affected devices.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch all devices and software in the network.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure that all Moxa devices are updated with the latest firmware and security patches to mitigate the risk of exploitation.