CVE-2020-5649 : Exploit Details and Defense Strategies

A resource management error vulnerability in the TCP/IP function of Mitsubishi Electric Corporation's GT14 Model of GOT 1000 series allows a remote attacker to disrupt network functions.

Understanding CVE-2020-5649

This CVE involves a critical vulnerability in the firmware of specific Mitsubishi Electric products.

What is CVE-2020-5649?

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

The Impact of CVE-2020-5649

The vulnerability poses a significant risk as it allows attackers to disrupt critical network operations, potentially leading to service outages and security breaches.

Technical Details of CVE-2020-5649

This section delves into the technical aspects of the CVE.

Vulnerability Description

The flaw lies in the resource management of the TCP/IP function within the affected firmware versions, making it susceptible to exploitation by malicious actors.

Affected Systems and Versions

Product: GT14 Model of GOT 1000 series
Vendor: Mitsubishi Electric Corporation
Versions: 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 specifically crafted packet to the targeted devices, causing a disruption in their network functions.

Mitigation and Prevention

Protecting systems from CVE-2020-5649 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 mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.

Patching and Updates

Stay informed about security advisories and updates from Mitsubishi Electric Corporation.
Ensure timely installation of patches to address vulnerabilities and enhance system security.