Access Control Bypass Affecting github.com/traefik/traefik/v2/pkg/server package, versions <2.11.6


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.05% (17th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-GOLANG-GITHUBCOMTRAEFIKTRAEFIKV2PKGSERVER-7430179
  • published 7 Jul 2024
  • disclosed 5 Jul 2024
  • credit Michael Wedl

How to fix?

Upgrade github.com/traefik/traefik/v2/pkg/server to version 2.11.6 or higher.

Overview

github.com/traefik/traefik/v2/pkg/server is a server package for traefik, a cloud native edge router.

Affected versions of this package are vulnerable to Access Control Bypass via HTTP/3 early data requests used in QUIC 0-RTT handshakes. An attacker can spoof IP addresses to bypass IP allow-lists.

CVSS Scores

version 4.0
version 3.1
Expand this section

Snyk

Recommended
7.7 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Attack Requirements (AT)
    None
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Confidentiality (VC)
    None
  • Integrity (VI)
    None
  • Availability (VA)
    None
  • Confidentiality (SC)
    High
  • Integrity (SI)
    None
  • Availability (SA)
    None