CVE-2016-9382
Summary
| CVE | CVE-2016-9382 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-01-23 21:59:02 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode. |
Risk And Classification
Primary CVSS: v3.0 7.8 HIGH from [email protected]
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-264 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:L/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| 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 |
| Operating System | Xen | Xen | 4.0.0 | All | All | All |
| Operating System | Xen | Xen | 4.0.1 | All | All | All |
| Operating System | Xen | Xen | 4.0.2 | All | All | All |
| Operating System | Xen | Xen | 4.0.3 | All | All | All |
| Operating System | Xen | Xen | 4.0.4 | All | All | All |
| Operating System | Xen | Xen | 4.1.0 | All | All | All |
| Operating System | Xen | Xen | 4.1.1 | All | All | All |
| Operating System | Xen | Xen | 4.1.2 | All | All | All |
| Operating System | Xen | Xen | 4.1.3 | All | All | All |
| Operating System | Xen | Xen | 4.1.4 | All | All | All |
| Operating System | Xen | Xen | 4.1.5 | All | All | All |
| Operating System | Xen | Xen | 4.1.6.1 | All | All | All |
| Operating System | Xen | Xen | 4.2.0 | All | All | All |
| Operating System | Xen | Xen | 4.2.1 | All | All | All |
| Operating System | Xen | Xen | 4.2.2 | All | All | All |
| Operating System | Xen | Xen | 4.2.3 | All | All | All |
| Operating System | Xen | Xen | 4.2.4 | All | All | All |
| Operating System | Xen | Xen | 4.2.5 | All | All | All |
| Operating System | Xen | Xen | 4.3.0 | All | All | All |
| Operating System | Xen | Xen | 4.3.1 | All | All | All |
| Operating System | Xen | Xen | 4.3.2 | All | All | All |
| Operating System | Xen | Xen | 4.3.3 | All | All | All |
| Operating System | Xen | Xen | 4.3.4 | All | All | All |
| Operating System | Xen | Xen | 4.4.0 | All | All | All |
| Operating System | Xen | Xen | 4.4.1 | All | All | All |
| Operating System | Xen | Xen | 4.4.2 | All | All | All |
| Operating System | Xen | Xen | 4.4.3 | All | All | All |
| Operating System | Xen | Xen | 4.4.4 | All | All | All |
| Operating System | Xen | Xen | 4.5.0 | All | All | All |
| Operating System | Xen | Xen | 4.5.1 | All | All | All |
| Operating System | Xen | Xen | 4.5.2 | All | All | All |
| Operating System | Xen | Xen | 4.5.3 | All | All | All |
| Operating System | Xen | Xen | 4.5.5 | All | All | All |
| Operating System | Xen | Xen | 4.6.0 | All | All | All |
| Operating System | Xen | Xen | 4.6.1 | All | All | All |
| Operating System | Xen | Xen | 4.6.3 | All | All | All |
| Operating System | Xen | Xen | 4.6.4 | All | All | All |
| Operating System | Xen | Xen | 4.7.0 | All | All | All |
| Operating System | Xen | Xen | 4.7.1 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Xen CVE-2016-9382 Privilege Escalation Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| XSA-192 - Xen Security Advisories | af854a3a-2127-422b-91ae-364da2661108 | xenbits.xen.org | Patch, Vendor Advisory |
| Xen: Multiple vulnerabilities (GLSA 201612-56) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Citrix XenServer Multiple Security Updates | af854a3a-2127-422b-91ae-364da2661108 | support.citrix.com | Patch, Third Party Advisory |
| Xen VM86 Mode Task Switching Bug Lets Local Users on a Guest System Gain Elevated Privileges on the Guest System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.