CVE-2023-47106

Aliases:GHSA-fvhj-4qfh-q2hmGO-2023-2376
Advisory lineage Upstream: 0 Downstream: 2
Modified
Published: 04 Dec 2023, 20:26
Last modified:02 Aug 2024, 21:01

Vulnerability Summary

Overall Risk (default)
medium
36/100
CVSS Score
6.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.13% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

04 Dec 2023, 20:26
Published
Vulnerability first disclosed
02 Aug 2024, 21:01
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Trends

Current EPSS score: 0.13%• Percentile: 32%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • github.com/traefik•traefik

    all

  • github.com/traefik/traefik•v2

    < 2.10.6

  • github.com/traefik/traefik•v3

    < 3.0.0-beta5

  • traefik•traefik

    < 2.10.6 | ≥ 3.0.0-beta1, < 3.0.0-beta5 | ≤ 2.10.5 | 3.0.0:beta1 | 3.0.0:beta2 | 3.0.0:beta3 | 3.0.0:beta4

References (6)