[UNKNOWN] Kernel:
En bref
- Source
- NVD
- EPSS
- EPSS 0.67 % · centile 52 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- redhat
- Statut NVD
- Modified
Description
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
Faiblesses (CWE)
- CWE-250 — Execution with Unnecessary Privileges
- CWE-755 — Gestion incorrecte des conditions exceptionnelles
Références
- https://access.redhat.com/errata/RHSA-2018:0412
- https://access.redhat.com/articles/3290921
- https://usn.ubuntu.com/3619-2/
- https://access.redhat.com/errata/RHSA-2018:0395
- https://usn.ubuntu.com/3754-1/
- http://www.securitytracker.com/id/1038782
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518
- http://www.openwall.com/lists/oss-security/2017/06/23/5
- https://usn.ubuntu.com/3619-1/
- https://www.debian.org/security/2017/dsa-3981
- https://www.spinics.net/lists/kvm/msg151817.html
- http://www.securityfocus.com/bid/99263
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 5.5 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | redhat |
| CVSS 3.0 | MEDIUM 5.5 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.0 | HIGH 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2017-16535
- GCVE · GCVE-0-2017-7518
Avis du CERT-FR
- CERTFR-2018-AVI-408 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2018-AVI-170 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2017-AVI-400 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2017-AVI-390 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2017-AVI-383 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*< 4.12
Produits affectés
| Produit | Versions |
|---|---|
| [UNKNOWN] · Kernel: | affected 4.12 |
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 |