CVE-2021-20590 : What You Need to Know
Discover the details of CVE-2021-20590, an improper authentication vulnerability in Mitsubishi Electric's GOT2000 series, allowing remote unauthorized access. Learn about the impact, affected systems, and mitigation steps.
An improper authentication vulnerability in various models of Mitsubishi Electric's GOT2000 series allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when using the 'VNC server' function.
Understanding CVE-2021-20590
This CVE identifies a critical flaw in the VNC server implementations of multiple Mitsubishi Electric products.
What is CVE-2021-20590?
The vulnerability in CVE-2021-20590 is due to improper authentication mechanisms in the VNC servers of affected Mitsubishi Electric products. This flaw enables malicious actors to remotely access these systems without proper authentication.
The Impact of CVE-2021-20590
The impact of CVE-2021-20590 is significant as it allows unauthorized individuals to gain access to critical systems, potentially leading to data breaches, unauthorized control over devices, and other malicious activities.
Technical Details of CVE-2021-20590
This section delves into the specific technical aspects related to CVE-2021-20590.
Vulnerability Description
The vulnerability arises from the improper authentication mechanisms in the VNC server versions 01.39.010 and prior for certain models in the GOT2000 and GOT SIMPLE series.
Affected Systems and Versions
The affected products include the GOT2000 series GT27 model, GT25 model, and GT21 models, along with the GOT SIMPLE series GS21 models, under specific VNC server versions.
Exploitation Mechanism
Remote unauthenticated attackers can exploit this vulnerability by sending specially crafted packets to the VNC server, circumventing the authentication process and gaining unauthorized access.
Mitigation and Prevention
In response to CVE-2021-20590, organizations and users can take several steps to mitigate the risks posed by this vulnerability.
Immediate Steps to Take
Immediately update the VNC server software to patched versions or consider disabling the VNC server function to prevent unauthorized access.
Long-Term Security Practices
Implement network segmentation, strong authentication mechanisms, and regular security audits to enhance overall cybersecurity posture and prevent similar vulnerabilities in the future.
Patching and Updates
Regularly check for security updates from Mitsubishi Electric and apply patches promptly to address known vulnerabilities and enhance system security.