Zoom ST3 Content-Security-Policy Bypass Scanner

This scanner is designed to detect vulnerabilities in Zoom ST3, a widely used tool for virtual meetings and webinars. Zoom is popular across industries for hosting meetings, webinars, and online conferences to facilitate smooth communication. Its features make it an essential tool for businesses, educational institutions, and personal use globally. Due to its wide adoption, ensuring security in Zoom deployments is crucial to maintain confidentiality and integrity of communications. This scanner aims to secure Zoom's service against known vulnerabilities that could jeopardize user security. By identifying such vulnerabilities, it aids organizations in safeguarding their digital communication channels.

The Cross-Site Scripting (XSS) vulnerability detected by this scanner occurs when scripts are injected into web pages viewed by other users, exploiting weak Content-Security-Policy settings. XSS vulnerabilities can lead to a multitude of security issues, including unauthorized access to user sessions. This vulnerability often stems from improper handling of user inputs and insufficient sanitation of data. Detecting and addressing XSS vulnerabilities is critical to maintaining the integrity and trustworthiness of web-based applications. Understanding the presence of this vulnerability allows organizations to reinforce their security frameworks.

The vulnerability checked by this scanner focuses on bypassing the Content-Security-Policy using specific script injections. It targets the "zoom.us" header to test if such scripts can be executed despite policy constraints. Utilizing techniques like navigating and script execution, it attempts to reveal areas where these policies fail. The aim is to ensure that hosts properly sanitizes any content that is displayed dynamically. The vulnerable parameter in this context relates to how URLs and scripts are handled within the application. The scanner simulates attack scenarios to validate the effectiveness of existing security barriers.

Plausible exploitation of the detected vulnerability can result in malicious attackers gaining unauthorized access to user data or sessions. From impersonating users to distributing malware, XSS vulnerabilities pose several threats if leveraged successfully. Attackers could potentially manipulate web pages to extract sensitive information or redirect users to malicious websites. Such exploitation can compromise not only individual user security but also the wider organizational infrastructure. Swiftly identifying and remedying such vulnerabilities reduces the risk of data breaches and reputation damage to the organization. Organizations must be proactive in scanning for and patching these vulnerabilities to maintain robust security defenses.

REFERENCES

• https://github.com/renniepak/CSPBypass/blob/main/data.tsv