Jellyfin Default Login Scanner

Jellyfin is an open-source media server solution that is used in homes and small businesses to manage and stream media content. Developed and maintained by a community of developers and users, Jellyfin allows users to access their media libraries on a variety of devices including smart TVs, computers, and mobile devices. It provides functionalities such as media collection management, streaming, and client applications. Used in environments where media management and access are crucial, Jellyfin is popular for its flexibility and no-cost licensing. The software is often deployed on local networks, enabling users to maintain control over their media content without relying on cloud services. Its user-friendly interface and extensive customization options make it a preferred choice for media enthusiasts and professionals.

The default login vulnerability in the Jellyfin Console exposes the system to unauthorized access due to weak or default credentials being used. This vulnerability can occur when system administrators do not change initial admin credentials, leaving systems open to attacks. Hackers can exploit this vulnerability to access administrative panels, potentially leading to system compromisation. Default credentials are often well known or easily guessed, allowing attackers to access sensitive areas. When this vulnerability is present, it poses a significant risk as an attacker can perform actions with admin privileges. Preventing unauthorized access typically requires changing default credentials during setup to unique and secure passwords.

The vulnerability details for the Jellyfin Console involve weak or common administrator credentials being used, such as 'admin' or 'password'. The affected end point is the authentication endpoint used for logging into Jellyfin, specifically the POST request to /Users/authenticatebyname. Parameters such as "Username" and "Password" are susceptible if left with default values. Attackers can perform credential stuffing attacks to determine if default credentials are active. Successful exploitation results in an access token that grants inappropriate access levels. This reveals the administration console and other configuration settings to unauthorized users.

If this vulnerability is exploited by malicious entities, it can lead to unauthorized system access allowing attackers to make changes within the Jellyfin environment. Attackers could change settings, view, or modify media libraries and settings, and potentially gain access to other connected systems. There's risk of data theft if personal media is exposed, and the system could be used as a launch point for further attacks against the network. Such access can disrupt service availability and lead to loss of user data integrity and confidentiality.

REFERENCES

• https://www.cvedetails.com/
• https://www.jellyfin.org/