CVE-2021-40385 : What You Need to Know

Kaseya Unitrends Backup Software before 10.5.5-2 is prone to a privilege escalation vulnerability that allows a read-only user to become an admin.

Understanding CVE-2021-40385

This CVE-2021-40385 vulnerability in Kaseya Unitrends Backup Software poses a significant risk due to the privilege escalation issue.

What is CVE-2021-40385?

CVE-2021-40385 is a vulnerability found in Kaseya Unitrends Backup Software before version 10.5.5-2, enabling a read-only user to elevate their privileges to admin status, potentially leading to unauthorized control of the system.

The Impact of CVE-2021-40385

The privilege escalation vulnerability in CVE-2021-40385 can result in severe consequences, such as unauthorized access and control over the affected system by exploiting the software flaw.

Technical Details of CVE-2021-40385

This section details the technical aspects of the CVE-2021-40385 vulnerability.

Vulnerability Description

The vulnerability allows a read-only user within the Kaseya Unitrends Backup Software to gain admin privileges, leading to unauthorized control and potential system compromise.

Affected Systems and Versions

Affected Software: Kaseya Unitrends Backup Software
Vulnerable Versions: Before 10.5.5-2

Exploitation Mechanism

The vulnerability permits a read-only user to perform actions reserved for admins, exploiting the system's lack of proper privilege controls.

Mitigation and Prevention

Protecting systems from CVE-2021-40385 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Kaseya Unitrends Backup Software to version 10.5.5-2 or later to mitigate the privilege escalation vulnerability.
Monitor and restrict user privileges to limit potential exploitation.

Long-Term Security Practices

Regularly review and update access controls to prevent unauthorized privilege escalation.
Conduct security audits and penetration testing to identify and address potential vulnerabilities.

Patching and Updates

Apply security patches promptly as new updates are released by the software vendor to address known vulnerabilities and enhance system security.