CVE-2023-45279 : Exploit Details and Defense Strategies

Yamcs 5.8.6 allows XSS (Cross-Site Scripting) where a user can upload a display referencing a malicious JavaScript file to the bucket, potentially impacting the system.

Understanding CVE-2023-45279

This section will provide an in-depth analysis of the CVE-2023-45279 vulnerability in Yamcs 5.8.6.

What is CVE-2023-45279?

CVE-2023-45279 is a Cross-Site Scripting (XSS) vulnerability in Yamcs 5.8.6 that allows a user to upload a display referencing a malicious JavaScript file to the bucket, leading to potential script execution in the context of the user's web browser.

The Impact of CVE-2023-45279

The impact of this vulnerability is the ability for an attacker to execute arbitrary scripts in a victim's browser, potentially stealing sensitive data, manipulating web content, or performing other malicious actions.

Technical Details of CVE-2023-45279

This section will cover the technical aspects of CVE-2023-45279, including vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

Yamcs 5.8.6 allows the upload of files, including malicious JavaScript, through the display referencing feature, enabling XSS attacks that can compromise user data and system integrity.

Affected Systems and Versions

The affected system is Yamcs 5.8.6, where users can upload displays containing references to malicious JavaScript files, making them vulnerable to cross-site scripting attacks.

Exploitation Mechanism

By uploading a display with a reference to a malicious JavaScript file to the bucket and opening it through the Telemetry menu, an attacker can execute scripts in the user's browser, exploiting the XSS vulnerability.

Mitigation and Prevention

This section will provide guidance on mitigating and preventing the exploitation of CVE-2023-45279 in Yamcs 5.8.6.

Immediate Steps to Take

Users should refrain from uploading displays with untrusted sources, especially those containing JavaScript references. Implementing content security policies and input validation can help mitigate the risk of XSS attacks.

Long-Term Security Practices

Regularly monitor and update Yamcs to the latest secure version to ensure patches for known vulnerabilities are applied promptly. Educating users on secure display uploading practices can prevent future XSS exploits.

Patching and Updates

Ensure that Yamcs is updated to version 5.8.7 or later, where known vulnerabilities, including the XSS issue in version 5.8.6, have been addressed and fixed.