CVE-2021-34204 : Exploit Details and Defense Strategies

D-Link DIR-2640-US 1.01B04 is affected by Insufficiently Protected Credentials, allowing attackers to obtain root privileges through the serial port.

Understanding CVE-2021-34204

This CVE describes a vulnerability in D-Link DIR-2640-US 1.01B04 that exposes plain-text system account passwords, enabling unauthorized access.

What is CVE-2021-34204?

The D-Link AC2600(DIR-2640) router stores device passwords in plain text, uses identical passwords for all devices, and lacks user management, allowing attackers to gain root access.

The Impact of CVE-2021-34204

An attacker can easily log in to the affected router via the serial port and gain unauthorized access with root privileges.

Technical Details of CVE-2021-34204

This section provides insight into the specific details of the vulnerability.

Vulnerability Description

D-Link DIR-2640-US 1.01B04 is prone to Insufficiently Protected Credentials due to storing passwords in plain text and lacking proper user management.

Affected Systems and Versions

The vulnerability affects D-Link DIR-2640-US 1.01B04 devices.

Exploitation Mechanism

Attackers can exploit this vulnerability by accessing the system account passwords stored in plain text via the serial port, granting them unauthorized root privileges.

Mitigation and Prevention

Learn how to protect and secure your systems from this vulnerability.

Immediate Steps to Take

Change the default password and limit physical access to the router. Monitor for any unauthorized system modifications.

Long-Term Security Practices

Regularly update firmware, implement strong password policies, and restrict access to sensitive network devices.

Patching and Updates

Check for security advisories and apply patches released by D-Link to address this vulnerability.