| Bug ID | 1217806 |
|---|---|
| Summary | VUL-0: CVE-2023-47124: traefik: Potential DDoS whith ACME HTTPChallenge |
| Classification | openSUSE |
| Product | openSUSE Distribution |
| Version | Leap 15.6 |
| Hardware | Other |
| URL | https://smash.suse.de/issue/386932/ |
| OS | Other |
| Status | NEW |
| Severity | Normal |
| Priority | P5 - None |
| Component | Security |
| Assignee | alexandre.vicenzi@suse.com |
| Reporter | smash_bz@suse.de |
| QA Contact | security-team@suse.de |
| CC | carlos.lopez@suse.com |
| Target Milestone | --- |
| Found By | Security Response Team |
| Blocker | --- |
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