CVE-2021-38693 : Security Advisory and Response

A path traversal vulnerability has been reported to affect QNAP devices running QuTScloud, QuTS hero, QTS, and QVR Pro Appliance, allowing attackers to read unexpected files and expose sensitive data.

Understanding CVE-2021-38693

This CVE describes a path traversal vulnerability impacting QNAP products, potentially leading to unauthorized data access.

What is CVE-2021-38693?

CVE-2021-38693 is a path traversal vulnerability affecting QNAP devices, compromising file access and data confidentiality.

The Impact of CVE-2021-38693

The vulnerability allows attackers to read data from files they should not have access to, potentially exposing sensitive information.

Technical Details of CVE-2021-38693

Explore the specific technical aspects of this vulnerability.

Vulnerability Description

The vulnerability allows for unauthorized file access, leading to potential data exposure.

Affected Systems and Versions

QuTScloud: Less than version c5.0.1.1949
QuTS hero: Less than versions h5.0.0.1949 build 20220215 and h4.5.4.1951 build 20220218
QTS: Less than versions 5.0.0.1986 build 20220324 and 4.5.4.1991 build 20220329

Exploitation Mechanism

Attackers can achieve this exploit through network-based vectors with low complexity.

Mitigation and Prevention

Learn how to protect your systems from this vulnerability.

Immediate Steps to Take

Verify system versions and update to fixed releases.
Monitor system logs for unusual file access.
Implement network segregation to limit external access.

Long-Term Security Practices

Regularly update and patch all software components.
Conduct security audits and penetration testing.

Patching and Updates

Update to fixed versions: QuTScloud c5.0.1.1949 and later, QuTS hero h5.0.0.1949 build 20220215 and later, QuTS hero h4.5.4.1951 build 20220218 and later, QTS 5.0.0.1986 build 20220324 and later, QTS 4.5.4.1991 build 20220329 and later.