CVE-2020-8621
Attempting QNAME minimization after forwarding can lead to an assertion failure in resolver.c
HIGH 7.5
En bref
- Source
- NVD
- EPSS
- EPSS 3.06 % · centile 88 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- isc
- Statut NVD
- Modified
Description
In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.
Faiblesses (CWE)
- CWE-617 — Assertion atteignable
Références
- https://kb.isc.org/docs/cve-2020-8621
- https://security.netapp.com/advisory/ntap-20200827-0003/
- https://usn.ubuntu.com/4468-1/
- https://security.gentoo.org/glsa/202008-19
- https://www.synology.com/security/advisory/Synology_SA_20_19
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
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 | isc |
| 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 · security-officer@isc.org (Secondary) |
| 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 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2020-29469
- GCVE · GCVE-0-2020-8621
Avis du CERT-FR
- CERTFR-2020-AVI-523 — Multiples vulnérabilités dans BIND · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*≥ 9.14.0 ≤ 9.16.5cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*≥ 9.17.0 ≤ 9.17.3cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*cpe:2.3:a:synology:dns_server:*:*:*:*:*:*:*:*< 2.2.2-5027cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| ISC · BIND9 | affected 9.14.0 < * |
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 |