CVE-2023-47124
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/12/2023
Last modified:
19/11/2024
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`.
Impact
Base Score 3.x
5.90
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | 2.10.5 (including) | |
| cpe:2.3:a:traefik:traefik:3.0.0:beta1:*:*:*:*:*:* | ||
| cpe:2.3:a:traefik:traefik:3.0.0:beta2:*:*:*:*:*:* | ||
| cpe:2.3:a:traefik:traefik:3.0.0:beta3:*:*:*:*:*:* | ||
| cpe:2.3:a:traefik:traefik:3.0.0:beta4:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- 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://github.com/traefik/traefik/security/advisories/GHSA-8g85-whqh-cr2f
- https://www.cloudflare.com/learning/ddos/ddos-attack-tools/slowloris