CVE-2023-47124 Information

Description

Traefik is an open source HTTP reverse proxy and load balancer. When Traefik is configured to use the HTTPChallenge to generate and renew the Let’s Encrypt TLS certificates the delay authorized to solve the challenge (50 seconds) can be exploited by attackers to achieve a slowloris attack. This vulnerability has been patch in version 2.10.6 and 3.0.0-beta5. Users are advised to upgrade. Users unable to upgrade should replace the HTTPChallenge with the TLSChallenge or the DNSChallenge.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/traefik/traefik/security/advisories/GHSA-8g85-whqh-cr2f https://doc.traefik.io/traefik/https/acme/#dnschallenge https://doc.traefik.io/traefik/https/acme/#httpchallenge https://doc.traefik.io/traefik/https/acme/#tlschallenge https://github.com/traefik/traefik/releases/tag/v2.10.6 https://github.com/traefik/traefik/releases/tag/v3.0.0-beta5 ttps://www.cloudflare.com/learning/ddos/ddos-attack-tools/slowloris/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.9