Fiber has Insecure CORS Configuration, Allowing Wildcard Origin with Credentials (gofiber fiber)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.66 % · percentile 51 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
Description
Fiber is a web framework written in go. Prior to version 2.52.1, the CORS middleware allows for insecure configurations that could potentially expose the application to multiple CORS-related vulnerabilities. Specifically, it allows setting the Access-Control-Allow-Origin header to a wildcard (`*`) while also having the Access-Control-Allow-Credentials set to true, which goes against recommended security best practices. The impact of this misconfiguration is high as it can lead to unauthorized access to sensitive user data and expose the system to various types of attacks listed in the PortSwigger article linked in the references. Version 2.52.1 contains a patch for this issue. As a workaround, users may manually validate the CORS configurations in their implementation to ensure that they do not allow a wildcard origin when credentials are enabled. The browser fetch api, as well as browsers and utilities that enforce CORS policies, are not affected by this.
Weaknesses (CWE)
- CWE-346 — Origin Validation Error
- CWE-942 — Permissive Cross-domain Security Policy with Untrusted Domains
References
- https://github.com/gofiber/fiber/security/advisories/GHSA-fmg4-x8pw-hjhg
- https://github.com/gofiber/fiber/commit/f0cd3b44b086544a37886232d0530601f2406c23
- https://codeql.github.com/codeql-query-help/javascript/js-cors-misconfiguration-for-credentials
- https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors/CORSNotSupportingCredentials
- https://fetch.spec.whatwg.org/#cors-protocol-and-credentials
- https://github.com/gofiber/fiber/releases/tag/v2.52.1
- https://saturncloud.io/blog/cors-cannot-use-wildcard-in-accesscontrolalloworigin-when-credentials-flag-is-true
- http://blog.portswigger.net/2016/10/exploiting-cors-misconfigurations-for.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | GitHub_M |
| CVSS 3.1 | CRITICAL 9.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-fmg4-x8pw-hjhg — Fiber has Insecure CORS Configuration, Allowing Wildcard Origin with Credentials
- GO-2024-2574 — Insecure CORS Configuration allowing wildcard origin with credentials in github.com/gofiber/fiber/v2
European references
- ENISA EUVD · EUVD-2024-0629
- GCVE · GCVE-0-2024-25124
Affected configurations (NVD CPE)
cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*< 2.52.1
Affected products
| Product | Versions |
|---|---|
| gofiber · fiber | affected < 2.52.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |