CVE-2022-39271

Traefik HTTP/2 connections management could cause a denial of service

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.

Traefik (pronunciado tráfico) es un moderno proxy inverso HTTP y equilibrador de carga que ayuda a desplegar microservicios. Se presenta una vulnerabilidad potencial en Traefik al administrar las conexiones HTTP/2. Una conexión de servidor HTTP/2 que es cerrada podría colgarse para siempre debido a un error fatal posterior. Este modo de fallo podría ser explotado para causar una denegación de servicio. Ha sido publicado un parche en versiones 2.8.8 y 2.9.0-rc5. Actualmente no se presentan mitigaciones conocidas

*Credits: N/A

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-09-02 CVE Reserved
2022-10-11 CVE Published
2024-06-01 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-755: Improper Handling of Exceptional Conditions

CAPEC

References (3)

URL	Tag	Source
https://github.com/traefik/traefik/releases/tag/v2.8.8	Release Notes
https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5	Release Notes

URL	Date	SRC

URL	Date	SRC
https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqr	2023-07-14

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"				< 2.8.8 Search vendor "Traefik" for product "Traefik" and version " < 2.8.8"		-		Affected
Traefik Search vendor "Traefik"		Traefik Search vendor "Traefik" for product "Traefik"				2.9.0 Search vendor "Traefik" for product "Traefik" and version "2.9.0"		rc1		Affected
Traefik Search vendor "Traefik"		Traefik Search vendor "Traefik" for product "Traefik"				2.9.0 Search vendor "Traefik" for product "Traefik" and version "2.9.0"		rc2		Affected
Traefik Search vendor "Traefik"		Traefik Search vendor "Traefik" for product "Traefik"				2.9.0 Search vendor "Traefik" for product "Traefik" and version "2.9.0"		rc3		Affected
Traefik Search vendor "Traefik"		Traefik Search vendor "Traefik" for product "Traefik"				2.9.0 Search vendor "Traefik" for product "Traefik" and version "2.9.0"		rc4		Affected