CVE-2019-7298 : Security Advisory and Response

A security problem was found on D-Link DIR-823G devices with firmware versions up to 1.02B03, allowing attackers to run arbitrary commands through a command injection vulnerability.

Understanding CVE-2019-7298

This CVE involves a vulnerability that enables attackers to execute arbitrary commands on affected devices.

What is CVE-2019-7298?

The vulnerability, known as command injection, permits attackers to execute unauthorized commands in the device's operating system by sending a specially crafted /HNAP1 request.

The Impact of CVE-2019-7298

Exploiting this vulnerability can lead to remote control of the device, allowing attackers to execute any desired command on the system.

Technical Details of CVE-2019-7298

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability arises when any HNAP API function triggers the system function using untrusted input from the request body, such as '/bin/telnetd' in the GetDeviceSettingsset API function.

Affected Systems and Versions

D-Link DIR-823G devices with firmware versions up to 1.02B03

Exploitation Mechanism

Attackers exploit the vulnerability by sending a specifically crafted /HNAP1 request to run arbitrary commands on the device's operating system.

Mitigation and Prevention

Protecting systems from CVE-2019-7298 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the firmware of D-Link DIR-823G devices to a version beyond 1.02B03
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Implement network segmentation to isolate critical devices
Regularly audit and update device firmware and security configurations

Patching and Updates

Apply patches and updates provided by D-Link to address the vulnerability