Universal Media Server Cross-Site Scripting Scanner

Universal Media Server is a widely used application that allows users to stream videos, audio, and images on various devices seamlessly. It is often utilized by home users and small offices to manage and deliver multimedia content effectively. The software supports a wide range of devices and is known for its extensive format support and transcoding capabilities. Users employ Universal Media Server for easy and efficient media distribution within their private network. The software's primary aim is to enhance multimedia access and consumption without complex configurations. It serves as a valuable tool for both personal and small-scale organizational multimedia purposes.

Cross-Site Scripting (XSS) is a prevalent security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. In the context of Universal Media Server, this vulnerability is identified in the version 13.2.1, particularly within its CMS component. The risk it presents is primarily due to its potential to compromise user interactions and data integrity by executing unauthorized scripts. XSS vulnerabilities can be leveraged for various malicious activities, including session hijacking and defacing websites. This vulnerability compromises user trust and poses significant security threats if not addressed.

The XSS vulnerability detailed here involves the potential for an attacker to execute a script that injects code into a page returned by Universal Media Server. The vulnerable endpoint is accessible via specific crafted requests that mimic user interaction. Such scripts can manipulate content directly rendered in the browser, such as through alert prompts to test the vulnerability. The technical mechanism largely involves reflected XSS where input submitted by an attacker is bounced off the server and immediately returned to the victim's browser. This reflects security oversights in input validation processes within the application's affected version.

When exploited, this XSS vulnerability can lead to unauthorized actions executed on behalf of users, like stealing cookies or session tokens. Malicious users might craft links that, when accessed, execute unwanted scripts exposing sensitive data or manipulating user sessions. The integrity of web interactions can be compromised, leading to the loss of user data confidentiality and trust in the service. Such vulnerabilities potentially open pathways for future attacks or acts as the first step in more complex exploits. Prompt addressing of these vulnerabilities is vital to maintain the security and integrity of any service using Universal Media Server.

REFERENCES

• https://packetstormsecurity.com/files/171754/Universal-Media-Server-13.2.1-Cross-Site-Scripting.html