CVE-2023-41338
Fiber Localhost Access Bypass
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.
INFO
Published Date :
Sept. 8, 2023, 7:15 p.m.
Last Modified :
Sept. 12, 2023, 7:12 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-41338.
| URL | Resource |
|---|---|
| https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For | Technical Description |
| https://docs.gofiber.io/api/ctx#isfromlocal | Product |
| https://github.com/gofiber/fiber/commit/b8c9ede6efa231116c4bd8bb9d5e03eac1cb76dc | Patch |
| https://github.com/gofiber/fiber/security/advisories/GHSA-3q5p-3558-364f | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-41338 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-41338 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 12, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For No Types Assigned https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For Technical Description Changed Reference Type https://docs.gofiber.io/api/ctx#isfromlocal No Types Assigned https://docs.gofiber.io/api/ctx#isfromlocal Product Changed Reference Type https://github.com/gofiber/fiber/commit/b8c9ede6efa231116c4bd8bb9d5e03eac1cb76dc No Types Assigned https://github.com/gofiber/fiber/commit/b8c9ede6efa231116c4bd8bb9d5e03eac1cb76dc Patch Changed Reference Type https://github.com/gofiber/fiber/security/advisories/GHSA-3q5p-3558-364f No Types Assigned https://github.com/gofiber/fiber/security/advisories/GHSA-3q5p-3558-364f Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:gofiber:fiber:*:*:*:*:*:*:*:* versions up to (excluding) 2.49.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-41338 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-41338
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.01%
score
0.36811
percentile