Xen xen
En bref
- Source
- NVD
- EPSS
- EPSS 2.23 % · centile 83 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- XEN
- Statut NVD
- Modified
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Description
guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may overflow. It would then only be the overflowed (and hence small) number which gets compared against the established upper bound.
Faiblesses (CWE)
- CWE-770 — Allocation de ressources sans limite ni régulation
Références
- https://xenbits.xenproject.org/xsa/advisory-385.txt
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT/
- https://www.debian.org/security/2021/dsa-5017
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXUI4VMD52CH3T7YXAG3J2JW7ZNN3SXF/
- https://security.gentoo.org/glsa/202402-07
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2021-15363
- GCVE · GCVE-0-2021-28706
Avis du CERT-FR
- CERTFR-2021-AVI-901 — Multiples vulnérabilités dans Xen · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*≥ 3.2 < 4.12cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| Xen · xen | affected 4.12.x |
| Xen · xen | unknown unspecified < 4.12 ; affected 4.14.x < unspecified ; unaffected next of 4.15.x < unspecified |
| Xen · xen | affected xen-unstable |
| Xen · xen | affected 4.13.x |
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 |