Access Control Bypass Affecting github.com/traefik/traefik/v3/pkg/server package, versions >=3.0.0-beta1 <3.0.4>=3.1.0-rc1 <3.1.0-rc3


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMTRAEFIKTRAEFIKV3PKGSERVER-7430180
  • published7 Jul 2024
  • disclosed5 Jul 2024
  • creditMichael Wedl

Introduced: 5 Jul 2024

CVE-2024-39321  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade github.com/traefik/traefik/v3/pkg/server to version 3.0.4, 3.1.0-rc3 or higher.

Overview

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