CVE-2022-45441 Explained : Impact and Mitigation

A cross-site scripting (XSS) vulnerability has been identified in Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.13)C0. This vulnerability could allow an attacker to store malicious scripts in the Logs page of the GUI on a vulnerable device, potentially leading to a denial-of-service (DoS) condition.

Understanding CVE-2022-45441

This section provides an overview of the CVE-2022-45441 vulnerability in Zyxel NBG-418N v2 firmware.

What is CVE-2022-45441?

CVE-2022-45441 is a cross-site scripting (XSS) vulnerability found in Zyxel NBG-418N v2 firmware versions earlier than V1.00(AARP.13)C0. The vulnerability allows an attacker to inject and execute malicious scripts in the GUI Logs page, exploiting authenticated users.

The Impact of CVE-2022-45441

A successful exploitation of this vulnerability could lead to the execution of malicious scripts by authenticated users, potentially resulting in a denial-of-service (DoS) condition when accessing the Logs page on the affected device.

Technical Details of CVE-2022-45441

Explore the technical aspects of the CVE-2022-45441 vulnerability to better understand its implications.

Vulnerability Description

The CVE-2022-45441 vulnerability is classified under CWE-79, indicating an improper neutralization of input during web page generation (cross-site scripting). Attackers can insert malicious scripts in the GUI Logs page, posing a significant security risk.

Affected Systems and Versions

Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.13)C0 are vulnerable to this XSS flaw, putting users of these versions at risk of exploitation.

Exploitation Mechanism

By manipulating the Logs page of the GUI interface, threat actors can inject and execute malicious scripts, potentially leading to a DoS scenario upon user interaction.

Mitigation and Prevention

Learn the necessary steps to mitigate the CVE-2022-45441 vulnerability and safeguard your systems effectively.

Immediate Steps to Take

Users are advised to update to the latest firmware version V1.00(AARP.13)C0 released by Zyxel to patch the XSS vulnerability and prevent potential exploitation.

Long-Term Security Practices

Implementing strict input validation mechanisms, conducting regular security audits, and educating users on safe browsing practices can bolster the overall security posture against such XSS vulnerabilities.

Patching and Updates

Regularly check for security advisories from Zyxel and promptly apply firmware updates to mitigate emerging vulnerabilities like CVE-2022-45441.