CVE-2021-20606 Explained : Impact and Mitigation
Discover the impact of CVE-2021-20606, an out-of-bounds read vulnerability in Mitsubishi Electric GX Works2, MELSOFT Navigator, and EZSocket, allowing attackers to trigger a denial of service (DoS) condition.
A vulnerability has been identified in Mitsubishi Electric GX Works2, MELSOFT Navigator, and EZSocket software that could allow an attacker to cause a denial of service (DoS) condition by tricking a user into opening a specially crafted malicious project file.
Understanding CVE-2021-20606
This CVE encompasses an out-of-bounds read vulnerability in the affected Mitsubishi Electric software.
What is CVE-2021-20606?
The CVE-2021-20606 vulnerability in Mitsubishi Electric GX Works2, MELSOFT Navigator, and EZSocket software allows attackers to trigger a DoS condition by exploiting an out-of-bounds read issue.
The Impact of CVE-2021-20606
By leveraging this vulnerability, threat actors can execute a DoS attack on systems running the affected Mitsubishi Electric software, disrupting normal operations and potentially causing downtime.
Technical Details of CVE-2021-20606
This section delves into the specifics of the CVE, outlining the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability, present in Mitsubishi Electric GX Works2 versions 1.606G and earlier, MELSOFT Navigator versions 2.84N and earlier, and EZSocket versions 5.4 and earlier, allows for an out-of-bounds read situation when processing specially crafted project files.
Affected Systems and Versions
Mitsubishi Electric GX Works2 1.606G and prior, MELSOFT Navigator 2.84N and prior, and EZSocket 5.4 and prior are susceptible to this CVE.
Exploitation Mechanism
To exploit CVE-2021-20606, attackers need to entice a user into opening a malicious project file that has been tailored to exploit the out-of-bounds read vulnerability.
Mitigation and Prevention
In this section, we cover immediate steps to mitigate the vulnerability and ensure long-term security practices are in place.
Immediate Steps to Take
Users should refrain from opening untrusted or suspicious project files and apply relevant security updates from Mitsubishi Electric to patch the vulnerability.
Long-Term Security Practices
Implementing robust cybersecurity measures, regularly updating software, and educating users on best security practices can enhance overall system security.
Patching and Updates
Keep systems up to date with the latest patches and security updates provided by Mitsubishi Electric to prevent exploitation of CVE-2021-20606.