CVE-2019-12786 Explained : Impact and Mitigation

D-Link DIR-818LW devices from version 2.05.B03 to 2.06B01 BETA are vulnerable to a command injection issue in the HNAP1 SetWanSettings function.

Understanding CVE-2019-12786

This CVE identifies a security vulnerability in D-Link DIR-818LW devices that allows for command injection through XML manipulation.

What is CVE-2019-12786?

This CVE pertains to a specific vulnerability in D-Link DIR-818LW devices that enables attackers to execute commands by manipulating the IPAddress key through XML injection.

The Impact of CVE-2019-12786

The vulnerability could lead to unauthorized command execution on affected devices, potentially compromising network security and exposing sensitive information.

Technical Details of CVE-2019-12786

Dive deeper into the technical aspects of this vulnerability.

Vulnerability Description

The issue lies in the HNAP1 SetWanSettings function, where an attacker can perform a command injection by manipulating the IPAddress key through XML injection.

Affected Systems and Versions

Product: D-Link DIR-818LW
Versions: 2.05.B03 to 2.06B01 BETA

Exploitation Mechanism

The vulnerability is exploited by injecting malicious XML code to manipulate the IPAddress key, allowing unauthorized command execution.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2019-12786.

Immediate Steps to Take

Disable remote access to the device if not required
Implement strong firewall rules to restrict unauthorized access
Regularly monitor network traffic for any suspicious activities

Long-Term Security Practices

Keep devices up to date with the latest firmware releases
Conduct regular security audits and penetration testing
Educate users on best practices for network security

Patching and Updates

Check for firmware updates from D-Link and apply patches promptly to address the vulnerability