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`.
References (8)
Scores
CVSS v3
5.9
EPSS
0.0023
EPSS Percentile
45.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-772
Status
published
Products (4)
traefik/traefik
3.0.0 beta1 (4 CPE variants)
traefik/traefik
< 2.10.5
traefik/traefik
0 - 2.10.6Go
traefik/traefik
0 - 3.0.0-beta5Go
Published
Dec 04, 2023
Tracked Since
Feb 18, 2026