CVE-2019-16920 : What You Need to Know

D-Link products like DIR-655C, DIR-866L, DIR-652, and DHP-1565 are vulnerable to unauthenticated remote code execution through the "PingTest" common gateway interface, potentially leading to command injection and system compromise. Other impacted products include DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.

Understanding CVE-2019-16920

This CVE involves unauthenticated remote code execution in various D-Link products, allowing attackers to potentially compromise the system.

What is CVE-2019-16920?

CVE-2019-16920 is a vulnerability that enables unauthenticated remote code execution in D-Link products, specifically through the "PingTest" common gateway interface. Attackers can exploit this flaw to inject commands and potentially take over the system.

The Impact of CVE-2019-16920

The vulnerability poses a significant risk as successful exploitation could result in complete system compromise, allowing attackers to gain unauthorized access and control.

Technical Details of CVE-2019-16920

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

Vulnerability Description

The vulnerability allows unauthenticated remote code execution in D-Link products by sending arbitrary input to the "PingTest" common gateway interface, leading to command injection.

Affected Systems and Versions

Vulnerable products include DIR-655C, DIR-866L, DIR-652, DHP-1565, DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.

Exploitation Mechanism

Attackers exploit the vulnerability by sending arbitrary input to the "PingTest" common gateway interface, triggering command injection.

Mitigation and Prevention

Protecting systems from CVE-2019-16920 requires immediate action and long-term security practices.

Immediate Steps to Take

Disable remote management if not needed to reduce the attack surface.
Implement strong firewall rules to restrict access to vulnerable interfaces.
Regularly monitor network traffic for any suspicious activity.

Long-Term Security Practices

Keep systems up to date with the latest security patches and firmware updates.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Check for patches and updates from D-Link to address the CVE-2019-16920 vulnerability.