CVE-2021-40972 Scanner

Spotweb is a web-based news aggregation system for Usenet messages, acting as a localized server that pulls in news feeds for users to browse, read, and interact with. It is designed to run atop a web server, allowing users to access Usenet content through a browser interface. Spotweb is widely used for its ability to categorize and search through the vast amounts of data on Usenet, making it easier for users to find specific content. Developed by the open-source community, Spotweb supports various media types, including text and binary files, and offers features such as comment systems and NZB file creation for downloading binaries.

Specifically, this XSS vulnerability is found within the installation process of Spotweb, where user inputs for the 'mail' parameter are not properly sanitized before being rendered on the page. An attacker can exploit this by crafting malicious input that includes JavaScript code, which is then executed when a user visits the affected page. The vulnerability underscores the critical importance of input validation and encoding within web applications to prevent such security issues.

Exploitation of this XSS vulnerability could lead to several adverse effects, including theft of cookies, session tokens, or other sensitive information that can be accessed through JavaScript. Attackers could also manipulate the content of the webpage, redirect users to phishing or malicious sites, or perform actions on behalf of the user within the application. The impact extends to compromising the integrity and confidentiality of user data and undermining the security of the application.

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References

• https://github.com/spotweb/spotweb/
• https://github.com/spotweb/spotweb/issues/711
• https://nvd.nist.gov/vuln/detail/CVE-2021-40972
• https://github.com/spotweb/spotweb