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CVE-2022-39271— Traefik HTTP/2 connections management could cause a denial of service

Quick assessment

Affected
traefik traefik
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Containous Traefik是美国Containous公司的一款反向代理和负载平衡器。 Containous Traefik 2.8.8之前版本、2.9.0-rc5之前版本存在资源管理错误漏洞，该漏洞源于发生致命错误，关闭的HTTP/2服务器连接可能会永久挂起。

CVSS 7.5 · High EPSS 1.12% · P65

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-39271

Vulnerability Information
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Vulnerability Title
Traefik HTTP/2 connections management could cause a denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Containous Traefik 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Containous Traefik是美国Containous公司的一款反向代理和负载平衡器。 Containous Traefik 2.8.8之前版本、2.9.0-rc5之前版本存在资源管理错误漏洞，该漏洞源于发生致命错误，关闭的HTTP/2服务器连接可能会永久挂起。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
traefik traefik < 2.8.8 -

II. Public POCs for CVE-2022-39271

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III. Intelligence Information for CVE-2022-39271

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Vendor Advisories for CVE-2022-39271 (1)

Other References for CVE-2022-39271 (2)

IV. Related Vulnerabilities

Same product: traefik
Same vendor: traefik
Same weakness: CWE-400

V. Comments for CVE-2022-39271

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