CVE-2021-20705 : What You Need to Know

This article provides an overview of CVE-2021-20705, highlighting its impact, technical details, and mitigation strategies.

Understanding CVE-2021-20705

CVE-2021-20705 is associated with an improper input validation vulnerability in WebManager CLUSTERPRO X and EXPRESSCLUSTER X versions 4.3 for Windows, enabling a remote attacker to upload files via the network.

What is CVE-2021-20705?

The CVE-2021-20705 vulnerability lies in the WebManager components of CLUSTERPRO X and EXPRESSCLUSTER X, allowing malicious actors to perform remote file uploads.

The Impact of CVE-2021-20705

Exploitation of this vulnerability could lead to unauthorized file uploads, potentially compromising the confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2021-20705

The following technical aspects provide a deeper insight into CVE-2021-20705:

Vulnerability Description

The vulnerability arises due to improper input validation within WebManager, resulting in a security loophole that enables remote file uploads.

Affected Systems and Versions

NEC Corporation's CLUSTERPRO X and EXPRESSCLUSTER X versions 4.3 for Windows, along with associated SingleServerSafe versions, are confirmed as vulnerable.

Exploitation Mechanism

Attackers can exploit the vulnerability by leveraging network access to upload files onto the targeted systems.

Mitigation and Prevention

Protecting systems from CVE-2021-20705 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches promptly
Restrict network access to vulnerable systems

Long-Term Security Practices

Regularly update and patch software
Implement network segmentation to limit exposure

Patching and Updates

Stay informed about security advisories and apply updates to mitigate known vulnerabilities swiftly.