CVE-2021-41441 Explained : Impact and Mitigation

A DoS attack in the web application of D-Link DIR-X1860 before v1.10WWB09_Beta allows a remote unauthenticated attacker to reboot the router via sending a specially crafted URL to an authenticated victim. The victim needs to visit this URL for the router to reboot.

Understanding CVE-2021-41441

This CVE involves a Denial of Service (DoS) vulnerability in D-Link DIR-X1860 routers that enables an attacker to remotely reboot the device.

What is CVE-2021-41441?

The vulnerability allows an unauthenticated attacker to cause a DoS condition by sending a specific URL to an authenticated user, triggering a router reboot upon the victim's visit.

The Impact of CVE-2021-41441

A remote attacker can disrupt services by rebooting the router without authentication
It can lead to downtime and interruptions in network connectivity

Technical Details of CVE-2021-41441

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

Type: Denial of Service (DoS)
Affected Component: Web application of D-Link DIR-X1860

Affected Systems and Versions

Product: D-Link DIR-X1860
Versions: before v1.10WWB09_Beta

Exploitation Mechanism

Attacker sends a specially crafted URL to an authenticated user
Victim's visit to the URL triggers the router reboot

Mitigation and Prevention

Protecting systems from CVE-2021-41441 is crucial for network security and stability.

Immediate Steps to Take

Update the router to version v1.10WWB09_Beta or newer
Avoid clicking on suspicious URLs received from untrusted sources

Long-Term Security Practices

Regularly monitor for router firmware updates
Educate users on safe browsing habits to prevent falling victim to similar attacks

Patching and Updates

Keep routers up to date with the latest firmware releases to mitigate known vulnerabilities