CVE-2023-47106 — Improper Input Validation in Traefik

CWE-20 — Improper Input ValidationCWE-177 — Improper Handling of URL Encoding (Hex Encoding)5 documents4 sources
Severity
6.5MEDIUMNVD
CNA4.8
EPSS
0.1%
top 67.75%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
TraefikGithub.com Traefik Traefik V2Github.com Traefik Traefik V3
Timeline
PublishedDec 4
Latest updateAug 21

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 versi…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitability: 3.9 | Impact: 2.5

Affected Packages4 packages

▶CVEListV5traefik/traefik< 2.10.6+1
▶NVDtraefik/traefik2.10.5+1

🔴Vulnerability Details

4
OSV
Traefik incorrectly processes fragment in the URL, leads to Authorization Bypass in github.com/traefik/traefik↗2024-08-21
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GHSA
Traefik incorrectly processes fragment in the URL, leads to Authorization Bypass↗2023-12-05
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OSV
Traefik incorrectly processes fragment in the URL, leads to Authorization Bypass↗2023-12-05
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CVEList
Incorrect processing of fragment in the URL leads to Authorization Bypass in Traefik↗2023-12-04
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CVE-2023-47106 — Improper Input Validation in Traefik | cvebase