CVE-2017-12855
En bref
- Source
- NVD
- EPSS
- EPSS 0.40 % · centile 34 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- mitre
- Statut NVD
- Modified
Description
Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free to modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may prematurely believe that a granted frame is safely private again, and reuse it in a way which contains sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9, 4.8, 4.7, 4.6, and 4.5 are affected.
Faiblesses (CWE)
- CWE-200 — Exposition d'informations sensibles à un acteur non autorisé
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 6.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2017-4390
- GCVE · GCVE-0-2017-12855
Avis du CERT-FR
- CERTFR-2017-AVI-268 — Multiples vulnérabilités dans Xen · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.5.5:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.6.3:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.6.5:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.6.6:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.7.1:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.7.2:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.7.3:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.8.0:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.8.1:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:4.9.0:*:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| affected n/a |
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 |