CVE-2020-8625
A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack
En bref
- Source
- NVD
- EPSS
- EPSS 64.16 % · centile 99 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- isc
- Statut NVD
- Modified
Description
BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch
Faiblesses (CWE)
- CWE-120 — Copie de tampon sans vérification de taille (débordement classique)
Références
- https://kb.isc.org/v1/docs/cve-2020-8625
- https://www.debian.org/security/2021/dsa-4857
- http://www.openwall.com/lists/oss-security/2021/02/19/1
- https://lists.debian.org/debian-lts-announce/2021/02/msg00029.html
- http://www.openwall.com/lists/oss-security/2021/02/20/2
- https://www.zerodayinitiative.com/advisories/ZDI-21-195/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/
- https://security.netapp.com/advisory/ntap-20210319-0001/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | isc |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · security-officer@isc.org (Secondary) |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2020-29473
- GCVE · GCVE-0-2020-8625
Avis du CERT-FR
- CERTFR-2022-AVI-216 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2021-AVI-791 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2021-AVI-589 — Multiples vulnérabilités dans Juniper Junos Space Log Collector · cert.ssi.gouv.fr
- CERTFR-2021-AVI-132 — Vulnérabilité dans BIND · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*≥ 9.5.0 ≤ 9.11.27cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*≥ 9.12.0 ≤ 9.16.11cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.11.6:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.11.7:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.11.8:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.11.27:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:*cpe:2.3:a:isc:bind:9.17.0:*:*:*:*:*:*:*cpe:2.3:a:isc:bind:9.17.1:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*< 1.0.1.1cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| ISC · BIND9 | affected Open Source Branches 9.5 though 9.11 9.5.0 through versions before 9.11.28 ; affected Open Source Branches 9.12 though 9.16 9.12.0 through versions before 9.16.12 ; affected Supported Preview Branch 9.11-S 9.11.3-S1 through versions before 9.11.28-S1 ; affected Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.12-S1 ; affected Development Branch 9.17 9.17.0 through versions before 9.17.2 |
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 |