CVE-2023-47124CWE-772

Denial of service whith ACME HTTPChallenge in Traefik

Medium · published December 4, 2023

CVSS v3.1
5.9
EPSS
1%
Percentile
55.8
In the wild
Unconfirmed
What it is

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`.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00791 · 55.8th percentile
Weakness
CWE-772 · Missing Release of Resource after Effective Lifetime
Published
2023-12-04T20:20Z
EPSS history
Timeline
  • 04 DEC 20:20Z
    Denial of service whith ACME HTTPChallenge in Traefik
    cvelistv5