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OpenAdvisories
Medium · 5.3 CVE-2023-41338 EUVD-2023-2407GHSA-3q5p-3558-364fGO-2023-2052

Vulnerability in Ctx.IsFromLocal() in gofiber

Published Sep 8, 2023 · Updated Sep 26, 2024 · Assigned by GitHub_M

Description

Fiber is an Express inspired web framework built in the go language. Versions of gofiber prior to 2.49.2 did not properly restrict access to localhost. This issue impacts users of our project who rely on the `ctx.IsFromLocal` method to restrict access to localhost requests. If exploited, it could allow unauthorized access to resources intended only for localhost. Setting `X-Forwarded-For: 127.0.0.1` in a request from a foreign host, will result in true for `ctx.IsFromLocal`. Access is limited to the scope of the affected process. This issue has been patched in version `2.49.2` with commit `b8c9ede6`. Users are advised to upgrade. There are no known workarounds to remediate this vulnerability without upgrading to the patched version.

Affected products

VendorProductAffectedFixed
gofiber fiber < 2.49.2 —

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/gofiber/fiber <= 1.14.6 — GHSA-3q5p-3558-364f
Go github.com/gofiber/fiber/v2 < 2.49.2 2.49.2 GHSA-3q5p-3558-364f
Go github.com/gofiber/fiber/v2 < 2.49.2-0.20230906112033-b8c9ede6efa2 2.49.2-0.20230906112033-b8c9ede6efa2 GO-2023-2052

References