https://bugzilla.suse.com/show_bug.cgi?id=1217806 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 -- You are receiving this mail because: You are on the CC list for the bug.