Vulnerability Description
fastify-csrf is an open-source plugin helps developers protect their Fastify server against CSRF attacks. Versions of fastify-csrf prior to 3.1.0 have a "double submit" mechanism using cookies with an application deployed across multiple subdomains, e.g. "heroku"-style platform as a service. Version 3.1.0 of the fastify-csrf fixes it. the vulnerability. 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fastify | Fastify-Csrf | < 3.1.0 |
Related Weaknesses (CWE)
References
- https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_PrevenThird Party Advisory
- https://github.com/fastify/csrf/pull/2PatchThird Party Advisory
- https://github.com/fastify/fastify-csrf/pull/51PatchThird Party Advisory
- https://github.com/fastify/fastify-csrf/releases/tag/v3.1.0Third Party Advisory
- https://github.com/fastify/fastify-csrf/security/advisories/GHSA-rc4q-9m69-gqp8PatchThird Party Advisory
- https://owasp.org/www-pdf-archive/David_Johansson-Double_Defeat_of_Double-SubmitThird Party Advisory
- https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_PrevenThird Party Advisory
- https://github.com/fastify/csrf/pull/2PatchThird Party Advisory
- https://github.com/fastify/fastify-csrf/pull/51PatchThird Party Advisory
- https://github.com/fastify/fastify-csrf/releases/tag/v3.1.0Third Party Advisory
- https://github.com/fastify/fastify-csrf/security/advisories/GHSA-rc4q-9m69-gqp8PatchThird Party Advisory
- https://owasp.org/www-pdf-archive/David_Johansson-Double_Defeat_of_Double-SubmitThird Party Advisory
FAQ
What is CVE-2021-29624?
CVE-2021-29624 is a vulnerability with a CVSS score of 6.5 (MEDIUM). fastify-csrf is an open-source plugin helps developers protect their Fastify server against CSRF attacks. Versions of fastify-csrf prior to 3.1.0 have a "double submit" mechanism using cookies with an...
How severe is CVE-2021-29624?
CVE-2021-29624 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-29624?
Check the references section above for vendor advisories and patch information. Affected products include: Fastify Fastify-Csrf.