CVE-2019-7390 : What You Need to Know

A vulnerability has been identified in the /bin/goahead file of D-Link DIR-823G devices running firmware version 1.02B03. The issue involves improper access control, enabling unauthorized remote attackers to manipulate the DNS service configuration of all WLAN clients without authentication.

Understanding CVE-2019-7390

This CVE entry describes a security vulnerability in D-Link DIR-823G devices that allows remote attackers to manipulate DNS service configuration without authentication.

What is CVE-2019-7390?

The vulnerability in /bin/goahead on D-Link DIR-823G devices with firmware 1.02B03 allows unauthorized remote attackers to hijack the DNS service configuration of all WLAN clients via the SetWanSettings HNAP API.

The Impact of CVE-2019-7390

Unauthorized remote attackers can manipulate DNS service configuration without authentication.

Technical Details of CVE-2019-7390

This section provides technical details about the vulnerability.

Vulnerability Description

Improper access control in /bin/goahead on D-Link DIR-823G devices

Affected Systems and Versions

D-Link DIR-823G devices with firmware version 1.02B03

Exploitation Mechanism

Attackers exploit the SetWanSettings HNAP API to manipulate DNS service configuration.

Mitigation and Prevention

Protect your systems from CVE-2019-7390 with the following steps:

Immediate Steps to Take

Disable remote management if not required
Regularly monitor network traffic for suspicious activities
Apply vendor-supplied patches or updates promptly

Long-Term Security Practices

Implement strong access control measures
Conduct regular security audits and assessments
Educate users on safe browsing habits

Patching and Updates

Check for firmware updates from D-Link and apply them as soon as they are available