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Security Advisories

CVE-2023-47106

NVD

https://nvd.nist.gov/vuln/detail/CVE-2023-47106

Severity

4.8

Medium

CVSS V3

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Summary

Incorrect processing of fragment in the URL leads to Authorization Bypass in Traefik

Description

Traefik is an open source HTTP reverse proxy and load balancer. When a request is sent to Traefik with a URL fragment, Traefik automatically URL encodes and forwards the fragment to the backend server. This violates RFC 7230 because in the origin-form the URL should only contain the absolute path and the query. When this is combined with another frontend proxy like Nginx, it can be used to bypass frontend proxy URI-based access control restrictions. This vulnerability has been addressed in versions 2.10.6 and 3.0.0-beta5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

References

Affected packages

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