CVE-2018-6212 : Vulnerability Insights and Analysis

A reflected Cross-Site Scripting (XSS) vulnerability affecting certain versions of customized firmware on D-Link DIR-620 devices.

Understanding CVE-2018-6212

What is CVE-2018-6212?

The vulnerability in the "Search" field of specific firmware versions allows for a reflected XSS attack due to inadequate special character filtration and mishandling of the XMLHttpRequest object.

The Impact of CVE-2018-6212

This vulnerability could be exploited by attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2018-6212

Vulnerability Description

The flaw exists in customized firmware versions 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, and 2.0.22 of D-Link DIR-620 routers, allowing for a reflected XSS attack.

Affected Systems and Versions

Product: D-Link DIR-620 devices
Versions: 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, 2.0.22

Exploitation Mechanism

The vulnerability arises from the lack of proper filtration for special characters and incorrect handling of the XMLHttpRequest object in the "Search" field.

Mitigation and Prevention

Immediate Steps to Take

Disable remote access to the router's administration interface if not required
Regularly monitor for security advisories and updates from D-Link

Long-Term Security Practices

Implement strong, unique passwords for router access
Regularly review and update router firmware

Patching and Updates

Apply patches and firmware updates provided by D-Link to address the vulnerability