CVE-2024-39321

Traefik vulnerable to bypassing IP allow-lists via HTTP/3 early data requests in QUIC 0-RTT handshakes

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Traefik is an HTTP reverse proxy and load balancer. Versions prior to 2.11.6, 3.0.4, and 3.1.0-rc3 have a vulnerability that allows bypassing IP allow-lists via HTTP/3 early data requests in QUIC 0-RTT handshakes sent with spoofed IP addresses. Versions 2.11.6, 3.0.4, and 3.1.0-rc3 contain a patch for this issue. No known workarounds are available.

Traefik es un proxy inverso HTTP y un equilibrador de carga. Las versiones anteriores a 2.11.6, 3.0.4 y 3.1.0-rc3 tienen una vulnerabilidad que permite eludir las listas de direcciones IP permitidas a través de solicitudes de datos tempranas HTTP/3 en protocolos de enlace QUIC 0-RTT enviados con direcciones IP falsificadas. Las versiones 2.11.6, 3.0.4 y 3.1.0-rc3 contienen un parche para este problema. No hay soluciones conocidas disponibles.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Complete

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-06-21 CVE Reserved
2024-07-05 CVE Published
2024-08-02 CVE Updated
2025-03-31 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-639: Authorization Bypass Through User-Controlled Key

CAPEC

References (4)

URL	Tag	Source
https://github.com/traefik/traefik/releases/tag/v2.11.6	X_refsource_misc
https://github.com/traefik/traefik/releases/tag/v3.0.4	X_refsource_misc
https://github.com/traefik/traefik/releases/tag/v3.1.0-rc3	X_refsource_misc
https://github.com/traefik/traefik/security/advisories/GHSA-gxrv-wf35-62w9	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Traefik Search vendor "Traefik"		Traefik Search vendor "Traefik" for product "Traefik"				< 2.11.6 Search vendor "Traefik" for product "Traefik" and version " < 2.11.6"		en		Affected
Traefik Search vendor "Traefik"		Traefik Search vendor "Traefik" for product "Traefik"				>= 3.0.0 < 3.0.4 Search vendor "Traefik" for product "Traefik" and version " >= 3.0.0 < 3.0.4"		en		Affected
Traefik Search vendor "Traefik"		Traefik Search vendor "Traefik" for product "Traefik"				3.1.0 Search vendor "Traefik" for product "Traefik" and version "3.1.0"		en		Affected