CVE-2019-20076 Explained : Impact and Mitigation

Netis DL4323 devices are affected by a cross-site scripting vulnerability in the username parameter of form2Ddns.cgi, used for configuring DynDns settings.

Understanding CVE-2019-20076

This CVE involves a cross-site scripting vulnerability in Netis DL4323 devices, impacting the Dynamic DNS Configuration.

What is CVE-2019-20076?

The vulnerability in the username parameter of form2Ddns.cgi allows attackers to execute malicious scripts in the context of a user's session.

The Impact of CVE-2019-20076

This vulnerability could lead to unauthorized access, data theft, and potential compromise of the affected devices.

Technical Details of CVE-2019-20076

Netis DL4323 devices are susceptible to a specific type of cross-site scripting attack.

Vulnerability Description

The vulnerability exists in the username parameter of form2Ddns.cgi, a component used for configuring DynDns settings.

Affected Systems and Versions

Product: Netis DL4323
Vendor: Netis
Version: All versions are affected

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the username parameter, which are then executed in the user's browser.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Disable remote access to the affected device if not required.
Regularly monitor for any unauthorized access or suspicious activities.
Implement strong and unique passwords for device access.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Keep devices and firmware updated with the latest security patches.
Educate users on safe browsing practices and the risks of clicking on unknown links.

Patching and Updates

Check for firmware updates from Netis and apply patches that address this specific vulnerability.