Bug 2159502 (CVE-2022-41919)

Summary:	CVE-2022-41919 fastify: CSRF
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	nboldt
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	fastify 4.10.2, fastify 3.29.4	Doc Type:	---
Doc Text:	A Cross-site request forgery (CSRF) vulnerability was found in fastify due to improper handling of incorrect Content-Types. This flaw allows an attacker to use an incorrect 'Content-Type' to bypass checks to allow fetch() requests that could be used to invoke routes that only accept `application/json` content type and bypass any CORS protection.	Story Points:	---
Clone Of:		Environment:
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2145164

Description Zack Miele 2023-01-09 19:46:53 UTC

Fastify is a web framework with minimal overhead and plugin architecture. The attacker can use the incorrect `Content-Type` to bypass the `Pre-Flight` checking of `fetch`. `fetch()` requests with Content-Type’s essence as "application/x-www-form-urlencoded", "multipart/form-data", or "text/plain", could potentially be used to invoke routes that only accepts `application/json` content type, thus bypassing any CORS protection, and therefore they could lead to a Cross-Site Request Forgery attack. This issue has been patched in version 4.10.2 and 3.29.4. As a workaround, implement Cross-Site Request Forgery protection using `@fastify/csrf'.

https://github.com/fastify/fastify/commit/62dde76f1f7aca76e38625fe8d983761f26e6fc9
https://www.npmjs.com/package/@fastify/csrf
https://github.com/fastify/fastify/security/advisories/GHSA-3fjj-p79j-c9hh