CVE-2019-8318 : Security Advisory and Response

A vulnerability has been found on D-Link DIR-878 devices using firmware 1.12A1. This vulnerability involves a Command Injection, enabling a remote attacker to execute unauthorized code and gain admin access through a crafted /HNAP1 POST request.

Understanding CVE-2019-8318

This CVE identifies a Command Injection vulnerability on D-Link DIR-878 devices.

What is CVE-2019-8318?

Command Injection vulnerability on D-Link DIR-878 devices with firmware 1.12A1
Allows remote attackers to execute unauthorized code and gain admin access
Exploited through a crafted /HNAP1 POST request

The Impact of CVE-2019-8318

Enables attackers to execute malicious commands
Potential unauthorized access to sensitive information

Technical Details of CVE-2019-8318

This section provides technical insights into the vulnerability.

Vulnerability Description

Command Injection vulnerability on D-Link DIR-878 devices
Occurs when HNAP API function invokes the twsystem function with untrusted input
Example: shell metacharacters in the SMTPServerPort field

Affected Systems and Versions

D-Link DIR-878 devices with firmware 1.12A1

Exploitation Mechanism

Attackers exploit the vulnerability through a crafted /HNAP1 POST request
Unauthorized code execution by injecting malicious commands

Mitigation and Prevention

Protecting systems from CVE-2019-8318 is crucial for maintaining security.

Immediate Steps to Take

Update firmware to the latest version provided by D-Link
Implement network segmentation to limit exposure
Monitor network traffic for suspicious activities

Long-Term Security Practices

Regularly update and patch all network devices
Conduct security assessments and penetration testing
Educate users on safe browsing habits and email security

Patching and Updates

Apply patches and updates released by D-Link promptly
Stay informed about security advisories and best practices