CVE-2021-40973 Scanner

Spotweb is a decentralized news aggregation service designed to collate and display messages posted on Usenet. It acts as a personal newsreader and a platform for community interaction, facilitating the sharing of multimedia content and discussions. Developed by an active community, Spotweb is celebrated for its comprehensive support of various media types and its user-centric design, which prioritizes ease of navigation and efficient content discovery. It serves a diverse user base, ranging from individual enthusiasts to larger community groups, looking to engage with a wide array of topics available on Usenet.

Specifically, the XSS vulnerability resides in the 'templates/installer/step-004.inc.php' file of Spotweb. The flaw is triggered via the 'lastname' parameter during the installation process. By exploiting this vulnerability, an attacker could execute malicious JavaScript code within the browser of any user visiting the compromised page. This could lead to various security issues such as session hijacking, phishing attacks, and unauthorized access to sensitive information, demonstrating the critical need for stringent input sanitation and validation practices in web applications.

The exploitation of this XSS vulnerability can have severe consequences, including theft of cookies, session tokens, or other sensitive information that can be accessed through the victim's browser. It may also result in the manipulation of page content, redirecting users to malicious sites, or performing unauthorized actions on behalf of the user. Such incidents can significantly undermine the security and trustworthiness of the platform, potentially leading to a loss of user confidence and reputational damage.

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References

• https://github.com/spotweb/spotweb/
• https://github.com/spotweb/spotweb/issues/711
• https://nvd.nist.gov/vuln/detail/CVE-2021-40973
• https://github.com/spotweb/spotweb