OpenBSD
En bref
- Source
- NVD
- EPSS
- EPSS 2.25 % · centile 83 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- checkpoint
- Statut NVD
- Modified
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Description
OpenBSD kernel version <= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.
Faiblesses (CWE)
- CWE-1049 — Excessive Data Query Operations in a Large Data Table
Références
- https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig
- https://security.netapp.com/advisory/ntap-20190905-0001/
- https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/
- https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2019-17850
- GCVE · GCVE-0-2019-8460
Avis du CERT-FR
- CERTFR-2022-AVI-124 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*≤ 6.5
Produits affectés
| Produit | Versions |
|---|---|
| OpenBSD | affected All, including latest - 6.5 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |