CVE-2016-9381

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Summary

CVECVE-2016-9381
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-01-23 21:59:02 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionRace condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Problem Types: CWE-362 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
2.0[email protected]Primary6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:M/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Citrix Xenserver 6.0.2 All All All
Application Citrix Xenserver 6.2.0 All All All
Application Citrix Xenserver 6.5 All All All
Application Citrix Xenserver 7.0 All All All
Application Qemu Qemu 2.8.0 rc0 All All
Application Qemu Qemu All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
XSA-197 - Xen Security Advisories af854a3a-2127-422b-91ae-364da2661108 xenbits.xen.org Third Party Advisory
Xen CVE-2016-9381 Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Xen: Multiple vulnerabilities (GLSA 201612-56) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Xen QEMU Shared Ring Processing Flaw Lets Local Users on a Guest System Gain Elevated Privileges on the Host System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
Citrix XenServer Multiple Security Updates af854a3a-2127-422b-91ae-364da2661108 support.citrix.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 500810 Alpine Linux Security Update for xen
  • 504553 Alpine Linux Security Update for xen

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