CVE-2021-32813

CVE-2021-32813 · Drop Headers via Malicious Connection Header

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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.

CVSS 4.8 · Moyenne · EPSS 1,1%

Publication

2021-08-03T22:50:11.000Z

Mise à jour

2024-08-03T23:33:55.883Z

Pile logicielle: web

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