CVE-2021-36667 : Vulnerability Insights and Analysis

This article delves into the details of CVE-2021-36667, a command injection vulnerability in Druva inSync 6.9.0 for MacOS that enables attackers to execute arbitrary commands through a crafted payload to the local HTTP server.

Understanding CVE-2021-36667

InSync 6.9.0 for MacOS is impacted by a severe command injection flaw that can be exploited by threat actors to run unauthorized commands by leveraging an un-sanitized call to the python os.system library.

What is CVE-2021-36667?

The vulnerability resides in Druva inSync 6.9.0 for MacOS, permitting cybercriminals to execute malicious commands via specially crafted payloads to the local HTTP server due to inadequate input validation.

The Impact of CVE-2021-36667

This security flaw poses a significant risk as it allows malicious actors to execute arbitrary code on affected systems, potentially leading to unauthorized access, data theft, and complete system compromise.

Technical Details of CVE-2021-36667

The vulnerability description, affected systems, and exploitation mechanism are discussed below.

Vulnerability Description

The flaw in Druva inSync 6.9.0 for MacOS originates from an un-sanitized call to the python os.system library, enabling attackers to inject and execute arbitrary commands through specially crafted HTTP requests.

Affected Systems and Versions

Druva inSync 6.9.0 for MacOS is confirmed to be impacted by this vulnerability, putting systems running this version at risk of exploitation by threat actors.

Exploitation Mechanism

By sending a carefully crafted payload to the local HTTP server, attackers can trigger the execution of unauthorized commands with the privileges of the application, potentially leading to a complete system compromise.

Mitigation and Prevention

Understanding the steps to mitigate the risk and prevent further exploitation is crucial for safeguarding systems.

Immediate Steps to Take

It is essential to update Druva inSync to a secure version, apply security patches, and restrict network access to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and educating users on secure computing practices are essential for long-term security.

Patching and Updates

Regularly check for security updates from Druva, follow best practices for secure software development, and stay informed about potential vulnerabilities to ensure timely patching and protection.