CVE-2016-3159
At a glance
- Source
- NVD
- EPSS
- EPSS 0.40 % · percentile 34 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mitre
- NVD status
- Modified
Description
The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.
Weaknesses (CWE)
- CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor
- CWE-284 — Improper Access Control
References
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.html
- http://xenbits.xen.org/xsa/advisory-172.html
- http://www.securityfocus.com/bid/85716
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.html
- http://xenbits.xen.org/xsa/xsa172.patch
- http://www.securitytracker.com/id/1035435
- http://support.citrix.com/article/CTX209443
- http://www.debian.org/security/2016/dsa-3554
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | LOW 3.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 1.7 | AV:L/AC:L/Au:S/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2016-4211
- GCVE · GCVE-0-2016-3159
CERT-FR advisories
- CERTFR-2016-AVI-133 — Multiples vulnérabilités dans Citrix XenServer · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*≥ 4.3.0 ≤ 4.3.4cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*≥ 4.4.0 ≤ 4.4.4cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*≥ 4.5.0 ≤ 4.5.3cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*≥ 4.6.0 ≤ 4.6.1cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Affected products
| Product | 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 |