GitHub, Inc. AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

GitHub, Inc. CWE-352

@fastify/oauth2, a wrapper around the `simple-oauth2` library, is vulnerable to cross site request forgery (CSRF) prior to version 7.2.0.. All versions of @fastify/oauth2 used a statically generated `state` parameter at startup time and were used across all requests for all users. The purpose of the Oauth2 `state` parameter is to prevent CSRF attacks. As such, it should be unique per user and should be connected to the user's session in some way that will allow the server to validate it. Version 7.2.0 changes the default behavior to store the `state` in a cookie with the `http-only` and `same-site=lax` attributes set. The state is now by default generated for every user. Note that this contains a breaking change in the `checkStateFunction` function, which now accepts the full `Request` object. There are no known workarounds for the issue.

** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2023-31999. Reason: This candidate is a reservation duplicate of CVE-2023-31999. Notes: All CVE users should reference CVE-2023-31999 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage.

https://auth0.com/docs/secure/attack-protection/state-parameters [No Types Assigned]

https://github.com/fastify/fastify-oauth2/commit/bff756b456cbb769080631af2beb85671ff4c79c [No Types Assigned]

https://github.com/fastify/fastify-oauth2/releases/tag/v7.2.0 [No Types Assigned]

https://github.com/fastify/fastify-oauth2/security/advisories/GHSA-g8x5-p9qc-cf95 [No Types Assigned]