CVE-2021-26473 : Security Advisory and Response

A detailed overview of CVE-2021-26473 highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2021-26473

This CVE involves unauthenticated arbitrary file upload and command execution in Vembu products.

What is CVE-2021-26473?

The CVE identifies a vulnerability in VembuBDR and VembuOffsiteDR versions before 4.2.0.1, allowing attackers to upload arbitrary files and execute commands remotely.

The Impact of CVE-2021-26473

With a base severity score of 9.8 (Critical), this vulnerability poses a high risk to confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-26473

Explore the specific technical aspects of this security issue.

Vulnerability Description

The http API in Vembu products permits attackers to write and execute files within the web server context, enabling remote command execution.

Affected Systems and Versions

VembuBDR and VembuOffsiteDR versions before 4.2.0.1 are susceptible to this unauthenticated file upload and command execution vulnerability.

Exploitation Mechanism

Attackers can exploit this flaw by uploading malicious files via the http API and subsequently executing these files remotely through the web server.

Mitigation and Prevention

Discover the necessary steps to mitigate the risks associated with CVE-2021-26473.

Immediate Steps to Take

Users should update Vembu products to version 4.2.0.1 or later to eliminate this vulnerability and secure their systems.

Long-Term Security Practices

Implementing secure coding practices, regular security audits, and network segmentation can enhance overall security posture.

Patching and Updates

Regularly monitor for security updates and apply patches promptly to address known vulnerabilities and protect systems from potential exploits.