CVE-2021-38686 Explained : Impact and Mitigation

An improper authentication vulnerability affecting QNAP VioStor devices has been reported by JPCERT/CC. This vulnerability allows attackers to compromise system security, mitigated in QVR FW 5.1.6 build 20211109 and later.

Understanding CVE-2021-38686

This CVE highlights an improper authentication vulnerability in VioStor devices, posing a high risk to confidentiality, integrity, and availability.

What is CVE-2021-38686?

The CVE-2021-38686 relates to an authentication flaw in QNAP's VioStor devices, creating a security vulnerability that could be exploited by threat actors.

The Impact of CVE-2021-38686

If successfully exploited, this vulnerability could lead to a compromise of system security in affected QNAP VioStor devices.

Technical Details of CVE-2021-38686

This section focuses on the specific technical aspects of the vulnerability.

Vulnerability Description

The CVE-2021-38686 vulnerability is categorized under CWE-287 - Improper Authentication, with a base severity score of 8.8 (High).

Affected Systems and Versions

All QNAP VioStor devices running versions earlier than QVR FW 5.1.6 build 20211109 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability allows attackers to gain unauthorized access to VioStor devices, compromising confidentiality, integrity, and availability.

Mitigation and Prevention

It is crucial for users to take immediate action to address this security issue.

Immediate Steps to Take

Users are advised to update their QVR installations to versions equal to or later than QVR FW 5.1.6 build 20211109 to mitigate this vulnerability.

Long-Term Security Practices

Implementing robust authentication protocols and regular security patching practices can help prevent similar vulnerabilities in the future.

Patching and Updates

Ensure regular updates and monitoring of security advisories from QNAP to stay protected against emerging threats.