CVE-2023-6423 : Security Advisory and Response

This CVE-2023-6423 was published by INCIBE on November 30, 2023. It involves a Cross-site Scripting vulnerability in BigProf products, particularly affecting the Online Clinic Management System version 2.2.

Understanding CVE-2023-6423

This section will delve into what CVE-2023-6423 entails, its impact, technical details, and mitigation strategies.

What is CVE-2023-6423?

A Cross-site Scripting (XSS) vulnerability has been identified in the BigProf Online Clinic Management System version 2.2. This vulnerability arises due to inadequate encoding of user-controlled input, allowing attackers to execute malicious JavaScript payloads through the "FirstRecord" parameter on the "/clinic/events_view.php" page.

The Impact of CVE-2023-6423

Exploitation of this vulnerability could enable malicious users to store harmful JavaScript payloads within the system, which can be triggered and executed when the affected page loads. This can lead to unauthorized access, data theft, and other malicious activities that jeopardize the integrity and confidentiality of the system.

Technical Details of CVE-2023-6423

Let's explore the technical specifics of CVE-2023-6423.

Vulnerability Description

The vulnerability in BigProf Online Clinic Management System version 2.2 stems from a lack of proper input sanitization. This allows malicious actors to inject and execute arbitrary JavaScript code within the application, posing a significant security risk.

Affected Systems and Versions

The vulnerability affects specifically the BigProf Online Clinic Management System version 2.2. Users utilizing this version of the system are at risk of exploitation through the identified XSS vulnerability.

Exploitation Mechanism

By manipulating the "FirstRecord" parameter within the "/clinic/events_view.php" page, attackers can inject malicious JavaScript payloads. When these payloads are executed upon page load, they can compromise the system's security and integrity.

Mitigation and Prevention

Understanding how to mitigate and prevent vulnerabilities like CVE-2023-6423 is crucial for maintaining system security.

Immediate Steps to Take

Users of the affected system should implement input validation mechanisms and encode user-controlled input to prevent XSS attacks. It is advisable to sanitize inputs and validate data to mitigate the risk of malicious code execution.

Long-Term Security Practices

Regular security assessments, code reviews, and security training for developers can help in identifying and addressing vulnerabilities before they are exploited. Adopting secure coding practices and staying informed about emerging threats is essential for enhancing long-term security.

Patching and Updates

Vendor-supplied patches and updates should be promptly applied to address known vulnerabilities. Keeping software and systems up to date with the latest security patches can help protect against potential exploits and security breaches.