Bug 1217806 (CVE-2023-47124)

Summary:	VUL-0: CVE-2023-47124: traefik: Potential DDoS whith ACME HTTPChallenge
Product:	[openSUSE] openSUSE Tumbleweed	Reporter:	SMASH SMASH <smash_bz>
Component:	Security	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	carlos.lopez
Version:	Current
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/386932/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2023-12-05 08:06:21 UTC

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:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-47124
https://doc.traefik.io/traefik/https/acme/#dnschallenge
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

Comment 1 Alexandre Vicenzi 2024-05-22 13:30:21 UTC

This was fixed in https://build.opensuse.org/request/show/1132711.

Comment 2 Carlos López 2024-05-28 11:37:12 UTC

Done, closing.