CVE-2023-47124
CVE-2023-47124 · Denial of service whith ACME HTTPChallenge in Traefik
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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 5.9 · Moyenne · EPSS 0,8%
- Publication
- Mise à jour
Pile logicielle: web
Produits et versions concernés
traefik
- Versions du logiciel
- < 2.10.6: Concernée
- >= 3.0.0-beta1, < 3.0.0-beta5: Concernée
Aucun correctif publié
Sources originales
- 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
- https://www.cloudflare.com/learning/ddos/ddos-attack-tools/slowloris
- https://nvd.nist.gov/vuln/detail/CVE-2023-47124