ghsa-8g85-whqh-cr2f
Vulnerability from github
Published
2023-12-05 18:12
Modified
2023-12-05 18:12
Severity ?
Summary
Traefik vulnerable to potential DDoS via ACME HTTPChallenge
Details
Impact
There is a potential vulnerability in Traefik managing the ACME HTTP challenge.
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 (slowloris attack).
Patches
- https://github.com/traefik/traefik/releases/tag/v2.10.6
- https://github.com/traefik/traefik/releases/tag/v3.0.0-beta5
Workarounds
Replace the HTTPChallenge with the TLSChallenge or the DNSChallenge.
For more information
If you have any questions or comments about this advisory, please open an issue.
{ "affected": [ { "package": { "ecosystem": "Go", "name": "github.com/traefik/traefik/v2" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "2.10.6" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "Go", "name": "github.com/traefik/traefik/v3" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "3.0.0-beta5" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2023-47124" ], "database_specific": { "cwe_ids": [ "CWE-400", "CWE-772" ], "github_reviewed": true, "github_reviewed_at": "2023-12-05T18:12:37Z", "nvd_published_at": "2023-12-04T21:15:33Z", "severity": "MODERATE" }, "details": "## Impact\n\nThere is a potential vulnerability in Traefik managing the ACME HTTP challenge.\n\nWhen Traefik is configured to use the [HTTPChallenge](https://doc.traefik.io/traefik/https/acme/#httpchallenge) to generate and renew the Let\u0027s Encrypt TLS certificates, the delay authorized to solve the challenge (50 seconds) can be exploited by attackers ([slowloris attack](https://www.cloudflare.com/learning/ddos/ddos-attack-tools/slowloris/)).\n \n## Patches\n\n- https://github.com/traefik/traefik/releases/tag/v2.10.6\n- https://github.com/traefik/traefik/releases/tag/v3.0.0-beta5\n\n## Workarounds\n\nReplace the HTTPChallenge with the [TLSChallenge](https://doc.traefik.io/traefik/https/acme/#tlschallenge) or the [DNSChallenge](https://doc.traefik.io/traefik/https/acme/#dnschallenge).\n\n## For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).", "id": "GHSA-8g85-whqh-cr2f", "modified": "2023-12-05T18:12:37Z", "published": "2023-12-05T18:12:37Z", "references": [ { "type": "WEB", "url": "https://github.com/traefik/traefik/security/advisories/GHSA-8g85-whqh-cr2f" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-47124" }, { "type": "WEB", "url": "https://doc.traefik.io/traefik/https/acme/#dnschallenge" }, { "type": "WEB", "url": "https://doc.traefik.io/traefik/https/acme/#httpchallenge" }, { "type": "WEB", "url": "https://doc.traefik.io/traefik/https/acme/#tlschallenge" }, { "type": "PACKAGE", "url": "https://github.com/traefik/traefik" }, { "type": "WEB", "url": "https://github.com/traefik/traefik/releases/tag/v2.10.6" }, { "type": "WEB", "url": "https://github.com/traefik/traefik/releases/tag/v3.0.0-beta5" }, { "type": "WEB", "url": "https://www.cloudflare.com/learning/ddos/ddos-attack-tools/slowloris" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "type": "CVSS_V3" } ], "summary": "Traefik vulnerable to potential DDoS via ACME HTTPChallenge" }
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Sightings
Author | Source | Type | Date |
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.