CVE-2022-41919 Fastify vulnerable to Cross-Site Request Forgery (CSRF) attack via incorrect content type

2022-11-2200:00:00

CWE-352

GitHub_M

www.cve.org

fastify

cve-2022-41919

csrf

vulnerability

fix

patch

cors

protection

content-type

fetch

@fastify/csrf

4.2 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

8.9 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

44.8%

JSON

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’.

CNA Affected

[
  {
    "vendor": "fastify",
    "product": "fastify",
    "versions": [
      {
        "version": ">= 4.0.0, < 4.10.2",
        "status": "affected"
      },
      {
        "version": ">= 3.0.0, < 3.29.4",
        "status": "affected"
      }
    ]
  }
]