CVE-2021-44054 : Exploit Details and Defense Strategies

An open redirect vulnerability affecting QNAP devices running QuTScloud, QuTS hero, and QTS allows attackers to redirect users to malicious pages.

Understanding CVE-2021-44054

What is CVE-2021-44054?

CVE-2021-44054 is an open redirect vulnerability reported in QNAP devices that could lead to users being redirected to harmful web pages.

The Impact of CVE-2021-44054

The vulnerability can be exploited by attackers to redirect users to untrusted pages containing malware, posing a risk to the security and integrity of systems.

Technical Details of CVE-2021-44054

Vulnerability Description

The open redirect vulnerability in QNAP devices running QuTScloud, QuTS hero, and QTS allows malicious actors to conduct redirection attacks.

Affected Systems and Versions

QuTScloud versions prior to c5.0.1.1949
QuTS hero versions before h5.0.0.1949 build 20220215 and h4.5.4.1951 build 20220218
QTS versions earlier than 5.0.0.1986 build 20220324 and 4.5.4.1991 build 20220329

Exploitation Mechanism

The vulnerability can be exploited through network-based attacks, requiring user interaction but no specific privileges.

Mitigation and Prevention

Immediate Steps to Take

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

Long-Term Security Practices

Regularly monitor for security advisories and updates from QNAP
Train users to be cautious of suspicious links and web redirects

Patching and Updates

Ensure timely installation of patches and updates provided by QNAP to mitigate the open redirect vulnerability.