CVE-2020-5646 Explained : Impact and Mitigation

A NULL pointer dereferences vulnerability in the TCP/IP function of the GT14 Model of GOT 1000 series allows a remote attacker to disrupt network functions.

Understanding CVE-2020-5646

This CVE involves a critical vulnerability in Mitsubishi Electric Corporation's GT14 Model of GOT 1000 series.

What is CVE-2020-5646?

The vulnerability in the firmware of the GT14 Model of GOT 1000 series allows a remote unauthenticated attacker to halt network functions using a specially crafted packet.

The Impact of CVE-2020-5646

The vulnerability can be exploited by attackers to disrupt network operations, potentially leading to service outages and system unavailability.

Technical Details of CVE-2020-5646

This section provides in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability is due to NULL pointer dereferences in the TCP/IP function of the affected Mitsubishi Electric products.

Affected Systems and Versions

Product: GT14 Model of GOT 1000 series
Vendor: Mitsubishi Electric Corporation
Versions affected: GT1455-QTBDE CoreOS version '05.65.00.BD' and earlier, GT1450-QMBDE CoreOS version '05.65.00.BD' and earlier, GT1450-QLBDE CoreOS version '05.65.00.BD' and earlier, GT1455HS-QTBDE CoreOS version '05.65.00.BD' and earlier, GT1450HS-QMBDE CoreOS version '05.65.00.BD' and earlier

Exploitation Mechanism

The vulnerability can be exploited remotely by sending a specially crafted packet to the affected devices, triggering NULL pointer dereferences and disrupting network functions.

Mitigation and Prevention

Protecting systems from CVE-2020-5646 is crucial to maintaining network security.

Immediate Steps to Take

Apply patches provided by Mitsubishi Electric Corporation promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and software to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and mitigate potential risks.

Patching and Updates

Stay informed about security advisories and updates from Mitsubishi Electric Corporation.
Ensure timely deployment of patches to address known vulnerabilities.