CVE-2021-20700 : What You Need to Know

This article provides detailed information about CVE-2021-20700, a buffer overflow vulnerability in NEC Corporation's CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier that allows remote code execution via a network.

Understanding CVE-2021-20700

This section will cover the essential aspects of the CVE-2021-20700 vulnerability.

What is CVE-2021-20700?

CVE-2021-20700 is a buffer overflow vulnerability present in the Disk Agent of CLUSTERPRO X 4.3 and EXPRESSCLUSTER X 4.3 for Windows and earlier versions. This vulnerability can be exploited by an attacker to achieve remote code execution through a network.

The Impact of CVE-2021-20700

The impact of CVE-2021-20700 includes the potential for unauthorized remote code execution, leading to a compromise of the affected systems and sensitive data.

Technical Details of CVE-2021-20700

In this section, we will delve into the technical aspects of the CVE-2021-20700 vulnerability.

Vulnerability Description

The vulnerability arises from a buffer overflow in the Disk Agent of CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier, enabling an attacker to execute arbitrary code remotely.

Affected Systems and Versions

NEC Corporation's CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier are affected by this vulnerability.

Exploitation Mechanism

Exploiting this buffer overflow vulnerability requires network access, allowing malicious actors to send crafted payloads to trigger the buffer overflow and execute code.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the risks associated with CVE-2021-20700.

Immediate Steps to Take

Immediate measures to mitigate the CVE-2021-20700 vulnerability include implementing security patches, restricting network access, and monitoring for anomalous network traffic.

Long-Term Security Practices

In the long term, organizations should adopt a proactive security stance by regularly updating software, conducting security audits, and enhancing network security protocols.

Patching and Updates

NEC Corporation is likely to release security patches to address the CVE-2021-20700 vulnerability. Organizations should promptly apply these patches to safeguard their systems from potential exploitation.