GHSA-rc4q-9m69-gqp8 Lack of protection against cookie tossing attacks in fastify-csrf

• npm fastify-csrf: < 3.1.0 → fixed in 3.1.0

Impact Users that used fastify-csrf with the "double submit" mechanism using cookies with an application deployed across multiple subdomains, e.g. "heroku"-style platform as a service. Patches Version 3.1.0 of the fastify-csrf fixes it. See https://github.com/fastify/fastify-csrf/pull/51 and https://github.com/fastify/csrf/pull/2. The user of the module would need to supply a `userInfo` when generating the CSRF token to fully implement the protection on their end. This is needed only for applications hosted on different subdomains. Workarounds None available. References 1. https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html 2. https://owasp.org/www-pdf-archive/David_Johansson-Double_Defeat_of_Double-Submit_Cookie.pdf Credits This vulnerability was found by Xhelal Likaj . For more information If you have any questions or comments about this advisory: • Open an issue in fastify-csrf • Email us at [email protected]