Meteoprog Content-Security-Policy Bypass Scanner

Meteoprog is a weather forecasting software widely used by meteorologists and weather enthusiasts to provide accurate weather predictions and updates. It integrates into various digital platforms to deliver real-time weather data to users worldwide. The software is designed to operate on multiple websites, offering a rich user experience with detailed weather dynamics. Users such as media companies, travel agencies, and event planners rely heavily on Meteoprog for planning and decision-making purposes. Many platforms embed Meteoprog’s functionalities to keep users informed about weather patterns and forecasts. Its robust API allows seamless integration into websites and mobile applications, making it an essential tool in numerous industries.

The vulnerability detected in this scanner is related to a Content-Security-Policy bypass involving Cross-Site Scripting (XSS). This allows attackers to inject malicious scripts into web pages that leverage Meteoprog, potentially leading to unauthorized access or data manipulation. CSP bypass occurs when a web application's policy doesn't adequately restrict resources loaded by the browser. Attackers can exploit this to execute arbitrary scripts, leading to different security issues. This vulnerability is critical as it could harm the confidentiality, integrity, or availability of the data handled by the affected applications. Identifying and fixing such vulnerabilities is crucial for ensuring the security of web applications using Meteoprog.

Technically, the vulnerability involves manipulating the Content-Security-Policy headers, enabling an attacker to bypass security restrictions. The vulnerable endpoint in this case is a webpage integrating Meteoprog API, particularly relying on insecure configurations. This scanner checks for CSP headers, navigating the page with headless technology to verify if the injectable payloads can be executed. The payload typically emulates scripts attempting to exfiltrate data or perform malicious actions. This involves replacing certain parameters in URLs to attempt injection, showcasing weaknesses in CSP implementations. Understanding the vulnerable parts allows developers to strengthen their security postures against such XSS attacks.

When exploited, this vulnerability can result in unauthorized actions performed within users' browsing contexts. Such an exploit could lead to unauthorized capture and manipulation of information on web portals using Meteoprog. This could potentially result in defacement, data theft, or deploying further progressive attacks such as phishing. It could severely impact user trust and system integrity, potentially leading to financial or reputational damage. Therefore, organizations should address CSP deficiencies promptly to prevent exploitation.

REFERENCES

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