CVE-2023-41338

Summary

CVE-2023-41338 is a vulnerability affecting the Fiber web framework, built in the Go language, prior to version 2.49.2. The issue lies in inadequate access control to localhost requests. This weakness can be exploited by setting the `X-Forwarded-For` header to `127.0.0.1` from a remote host, making the request appear as if it originated locally. Consequently, unauthorized access to resources meant for localhost usage could be gained. Users relying on the `ctx.IsFromLocal` method to secure their applications are at risk. A patch is available in commit `b8c9ede6` of version 2.49.2. Upgrading to this version is advised to mitigate the vulnerability, as no known workarounds exist.

Prevent cyber attacks with Recorded Future by prioritizing and patching critical vulnerabilities being exploited by threat actors targeting your industry. Book your demo to learn more.