CVE-2021-33425 : What You Need to Know

A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for OpenWRT LuCI version 19.07, allowing attackers to inject arbitrary Javascript in the OpenWRT Hostname via the Hostname Change operation.

Understanding CVE-2021-33425

This section provides insights into the nature and impact of the XSS vulnerability in OpenWRT LuCI.

What is CVE-2021-33425?

CVE-2021-33425 refers to a stored cross-site scripting (XSS) vulnerability found in the Web Interface for OpenWRT LuCI version 19.07. This security flaw enables malicious actors to insert and execute arbitrary Javascript code through the Hostname Change operation.

The Impact of CVE-2021-33425

The impact of this vulnerability is significant as it can be exploited by attackers to execute unauthorized scripts in the context of a user's web browser, leading to potential data theft or unauthorized actions on the affected system.

Technical Details of CVE-2021-33425

Delve deeper into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows threat actors to inject malicious JavaScript code into the OpenWRT Hostname field via a specific operation, potentially compromising the integrity of the system.

Affected Systems and Versions

OpenWRT LuCI version 19.07 is specifically affected by this XSS vulnerability, highlighting the importance of timely updates and patches.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating input fields related to the Hostname in the LuCI web interface, enabling the execution of unauthorized scripts.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-33425.

Immediate Steps to Take

Users are advised to update their OpenWRT LuCI installations to the latest version to prevent exploitation of this XSS vulnerability. Additionally, adhering to secure coding practices can help mitigate similar risks in the future.

Long-Term Security Practices

Implementing strict input validation mechanisms, regularly auditing code for security vulnerabilities, and educating users on safe browsing habits are essential for enhancing long-term security posture.

Patching and Updates

Regularly monitor security advisories from the OpenWRT project and promptly apply patches and updates to address known vulnerabilities such as CVE-2021-33425.