CVE-2021-45998 : Security Advisory and Response

D-Link device DIR_882 DIR_882_FW1.30B06_Hotfix_02 is affected by a command injection vulnerability, allowing attackers to execute arbitrary commands via a crafted HNAP1 POST request.

Understanding CVE-2021-45998

What is CVE-2021-45998?

CVE-2021-45998 is a command injection vulnerability found in the LocalIPAddress parameter of the D-Link device DIR_882 DIR_882_FW1.30B06_Hotfix_02, enabling threat actors to run malicious commands through a specially designed HNAP1 POST request.

The Impact of CVE-2021-45998

This vulnerability poses a significant risk as it allows attackers to execute unauthorized commands on the affected device, potentially leading to complete system compromise and unauthorized access.

Technical Details of CVE-2021-45998

Vulnerability Description

The vulnerability in the LocalIPAddress parameter of the affected device permits threat actors to execute arbitrary commands, manipulating the device's functionality.

Affected Systems and Versions

Product: D-Link device DIR_882 DIR_882_FW1.30B06_Hotfix_02
Vendor: D-Link
Version: All

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted HNAP1 POST request to the device, triggering the execution of malicious commands.

Mitigation and Prevention

Immediate Steps to Take

Disable remote access if not required
Implement network segmentation to limit the vulnerability's reach
Regularly monitor network traffic for any suspicious activities

Long-Term Security Practices

Keep the device firmware up to date
Conduct regular security audits and penetration testing

Patching and Updates

Ensure timely installation of security patches provided by D-Link to address the vulnerability.