CVE-2021-32813

Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.4.13, there exists a potential header vulnerability in Traefik's handling of the Connection header. Active exploitation of this issue is unlikely, as it requires that a removed header would lead to a privilege escalation, however, the Traefik team has addressed this issue to prevent any potential abuse. If one has a chain of Traefik middlewares, and one of them sets a request header, then sending a request with a certain Connection header will cause it to be removed before the request is sent. In this case, the backend does not see the request header. A patch is available in version 2.4.13. There are no known workarounds aside from upgrading.
Configurations

Configuration 1 (hide)

cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:07

Type Values Removed Values Added
CVSS v2 : 6.8
v3 : 8.1
v2 : 6.8
v3 : 4.8
References () https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9 - Patch, Third Party Advisory () https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9 - Patch, Third Party Advisory
References () https://github.com/traefik/traefik/releases/tag/v2.4.13 - Third Party Advisory () https://github.com/traefik/traefik/releases/tag/v2.4.13 - Third Party Advisory
References () https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg - Third Party Advisory () https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg - Third Party Advisory

Information

Published : 2021-08-03 23:15

Updated : 2024-11-21 06:07


NVD link : CVE-2021-32813

Mitre link : CVE-2021-32813

CVE.ORG link : CVE-2021-32813


JSON object : View

Products Affected

traefik

  • traefik
CWE
CWE-913

Improper Control of Dynamically-Managed Code Resources