CVE-2020-29481
CVE-2020-29481
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
An issue was discovered in Xen through 4.14.x. Access rights of Xenstore nodes are per domid. Unfortunately, existing granted access rights are not removed when a domain is being destroyed. This means that a new domain created with the same domid will inherit the access rights to Xenstore nodes from the previous domain(s) with the same domid. Because all Xenstore entries of a guest below /local/domain/<domid> are being deleted by Xen tools when a guest is destroyed, only Xenstore entries of other guests still running are affected. For example, a newly created guest domain might be able to read sensitive information that had belonged to a previously existing guest domain. Both Xenstore implementations (C and Ocaml) are vulnerable.
CVSS 8.8 · Élevée · EPSS 0,4% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
n/a
- Versions du logiciel
- n/a: Concernée
Aucun correctif publié
xen Debian:12
- Plages de versions concernées
- ECOSYSTEM: < 4.14.0+88-g1d1d1f5391-1
Mettez à jour vers 4.14.0+88-g1d1d1f5391-1
xen Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 4.14.0+88-g1d1d1f5391-1
Mettez à jour vers 4.14.0+88-g1d1d1f5391-1
xen Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 4.14.0+88-g1d1d1f5391-1
Mettez à jour vers 4.14.0+88-g1d1d1f5391-1
xen Ubuntu:16.04:LTS
- Versions du logiciel
- 4.5.1-0ubuntu1
- 4.5.1-0ubuntu2
- 4.6.0-1ubuntu1
- 4.6.0-1ubuntu2
- 4.6.0-1ubuntu4
- 4.6.0-1ubuntu4.1
- 4.6.0-1ubuntu4.2
- 4.6.0-1ubuntu4.3
- 4.6.5-0ubuntu1
- 4.6.5-0ubuntu1.1
- 4.6.5-0ubuntu1.2
- 4.6.5-0ubuntu1.4
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
xen Ubuntu:18.04:LTS
- Versions du logiciel
- 4.9.0-0ubuntu3
- 4.9.0-0ubuntu4
- 4.9.2-0ubuntu1
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
xen Ubuntu:20.04:LTS
- Versions du logiciel
- 4.9.2-0ubuntu2
- 4.9.2-0ubuntu6
- 4.9.2-0ubuntu7
- 4.11.3+24-g14b62ab3e5-1ubuntu1
- 4.11.3+24-g14b62ab3e5-1ubuntu2
- 4.11.3+24-g14b62ab3e5-1ubuntu2.2
- 4.11.3+24-g14b62ab3e5-1ubuntu2.3
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
Sources originales
- https://xenbits.xenproject.org/xsa/advisory-322.html
- https://www.debian.org/security/2020/dsa-4812
- http://www.openwall.com/lists/oss-security/2020/12/16/3
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/
- https://nvd.nist.gov/vuln/detail/CVE-2020-29481