CVE-2019-17354 : Exploit Details and Defense Strategies

Zyxel NBG-418N v2 router firmware vulnerability

Understanding CVE-2019-17354

The Zyxel NBG-418N v2 router is susceptible to unauthorized access to the wan.htm page without authentication, potentially leading to information disclosure and unauthorized data modification.

What is CVE-2019-17354?

The vulnerability in Zyxel NBG-418N v2 router's firmware allows attackers to access the wan.htm page without authentication, risking WAN information exposure and unauthorized data alteration.

The Impact of CVE-2019-17354

If exploited, this vulnerability could result in unauthorized disclosure of WAN information and enable attackers to modify data fields on the page.

Technical Details of CVE-2019-17354

The technical aspects of the vulnerability in Zyxel NBG-418N v2 router firmware.

Vulnerability Description

The wan.htm page on the Zyxel NBG-418N v2 router with firmware version V1.00(AARP.9)C0 can be accessed directly without authentication, potentially leading to information disclosure and unauthorized data manipulation.

Affected Systems and Versions

Affected Product: Zyxel NBG-418N v2 router
Affected Firmware Version: V1.00(AARP.9)C0

Exploitation Mechanism

Attackers can exploit this vulnerability by accessing the wan.htm page without authentication, allowing them to view WAN information and potentially modify data fields.

Mitigation and Prevention

Protecting against and addressing the CVE-2019-17354 vulnerability.

Immediate Steps to Take

Disable WAN access to the router configuration page from untrusted networks.
Regularly monitor router logs for any unauthorized access attempts.

Long-Term Security Practices

Keep router firmware up to date with the latest security patches.
Implement strong password policies and enable multi-factor authentication.

Patching and Updates

Ensure timely installation of firmware updates provided by Zyxel to address the CVE-2019-17354 vulnerability.