Pentest Report for Mozilla VPN Client Applications

This document is a penetration test report detailing the findings from a security assessment conducted by Cure53 on Mozilla VPN client applications. The assessment took place over 21 workdays in May 2023, following a request from Mozilla project handlers. The report outlines the scope of the testing, which included security tests and code audits across five distinct work packages for various platforms including macOS, Linux, Windows, iOS, and Android. A total of fifteen findings were identified, with seven categorized as security vulnerabilities and eight as general weaknesses. The vulnerabilities included issues such as denial-of-service (DoS) risks and inadequate access controls. The report emphasizes the importance of addressing these vulnerabilities to enhance the security posture of the Mozilla VPN client applications. Additionally, it provides a summary of the identified vulnerabilities, including their severity levels and suggested mitigation strategies. The document concludes with Cure53's overall impressions regarding the security resilience of the applications tested.