Improper Handling of URL Encoding (Hex Encoding) Affecting github.com/traefik/traefik/integration package, versions <2.10.6>=3.0.0-beta1 <3.0.0-beta5


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.1% (42nd percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMTRAEFIKTRAEFIKINTEGRATION-6099123
  • published5 Dec 2023
  • disclosed4 Dec 2023
  • creditKhang Tran

Introduced: 4 Dec 2023

CVE-2023-47106  (opens in a new tab)
CWE-177  (opens in a new tab)

How to fix?

Upgrade github.com/traefik/traefik/integration to version 2.10.6, 3.0.0-beta5 or higher.

Overview

Affected versions of this package are vulnerable to Improper Handling of URL Encoding (Hex Encoding) when a request is sent with a URL fragment. An attacker can bypass frontend proxy URI-based access control restrictions by exploiting the automatic URL encoding and forwarding of the fragment to the backend server.

Note:

This is only exploitable if another frontend proxy like Nginx is used.

CVSS Scores

version 3.1