CVE-2023-47106GO-2023-2376GHSA-FVHJ-4QFH-Q2HM
Incorrect processing of fragment in the URL leads to Authorization Bypass in Traefik
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.10.6, 3.0.0-beta5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- traefik traefik
fixed in 2.10.6; From 3.0.0-beta1 · fixed in 3.0.0-beta5
- github.com/traefik/traefikGo
All versions
- github.com/traefik/traefik/v2Go
fixed in 2.10.6
- github.com/traefik/traefik/v3Go
fixed in 3.0.0-beta5