CVE-2021-44051 Explained : Impact and Mitigation

A command injection vulnerability affecting QNAP NAS running QuTScloud, QuTS hero, and QTS has been reported, potentially allowing remote attackers to execute arbitrary commands. This CVE has a CVSS base score of 8.8.

Understanding CVE-2021-44051

This CVE involves a command injection vulnerability in QNAP NAS devices running specific software versions, enabling remote attackers to execute unauthorized commands.

What is CVE-2021-44051?

Command injection vulnerability impacting QNAP NAS devices running QuTScloud, QuTS hero, and QTS, allowing attackers to run arbitrary commands remotely.

The Impact of CVE-2021-44051

CVSS Base Score: 8.8 (High Severity)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Technical Details of CVE-2021-44051

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows remote attackers to execute arbitrary commands on vulnerable QNAP NAS devices.

Affected Systems and Versions

QuTScloud versions less than c5.0.1.1949
QuTS hero versions less than h5.0.0.1986 build 20220324
QTS versions less than 5.0.0.1986 build 20220324

Exploitation Mechanism

Remote attackers exploit this vulnerability by sending malicious command injections to affected devices.

Mitigation and Prevention

Steps to address and prevent the CVE exploitation.

Immediate Steps to Take

Upgrade QuTScloud to version c5.0.1.1949 or later
Upgrade QuTS hero to version h5.0.0.1986 build 20220324 or later
Upgrade QTS to version 5.0.0.1986 build 20220324 or later

Long-Term Security Practices

Regularly update software and firmware to the latest versions
Employ network segmentation and access controls
Monitor network traffic for suspicious activities

Patching and Updates

QNAP has released fixed versions for QuTScloud, QuTS hero, and QTS to address this vulnerability.