CVE-2021-38681 Explained : Impact and Mitigation

A reflected cross-site scripting (XSS) vulnerability impacting QNAP NAS running Ragic Cloud DB allows remote attackers to inject malicious code.

Understanding CVE-2021-38681

This CVE involves a security flaw in Ragic Cloud DB that enables attackers to execute XSS attacks on QNAP NAS systems, compromising data integrity.

What is CVE-2021-38681?

CVE-2021-38681 is a reflected XSS vulnerability discovered in Ragic Cloud DB, exposing QNAP NAS systems to potential remote code injection by malicious actors.

The Impact of CVE-2021-38681

The vulnerability poses a medium-severity risk, with high confidentiality impact, allowing attackers to manipulate user data on affected systems.

Technical Details of CVE-2021-38681

The vulnerability affects Ragic Cloud DB versions up to 3.7.0.1 and has a CVSS base score of 5.3, with network access and user interaction required for exploitation.

Vulnerability Description

The flaw enables remote attackers to inject and execute arbitrary scripts in the context of the victim's browser, potentially leading to cookie theft or session hijacking.

Affected Systems and Versions

Ragic Cloud DB versions less than or equal to 3.7.0.1 deployed on QNAP NAS systems are vulnerable to this XSS attack.

Exploitation Mechanism

Attackers exploit this vulnerability by crafting malicious links or forms that, when clicked or submitted by users, execute unauthorized actions on the system.

Mitigation and Prevention

To secure systems against CVE-2021-38681:

Immediate Steps to Take

Uninstall Ragic Cloud DB from QNAP NAS systems until a security patch is released.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities and enhance system security.

Patching and Updates

Stay informed about security advisories and apply patches promptly to prevent exploitation of known vulnerabilities.