CVE-2016-9382: High severity XEN Xen vulnerability

Published Jan 23, 2017
·
Updated

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.

Affected Software

43 affected components
XEN Xen=4.0.0
XEN Xen=4.0.1
XEN Xen=4.0.2
XEN Xen=4.0.3
XEN Xen=4.0.4
XEN Xen=4.1.0
XEN Xen=4.1.1
XEN Xen=4.1.2
XEN Xen=4.1.3
XEN Xen=4.1.4
XEN Xen=4.1.5
XEN Xen=4.1.6.1
XEN Xen=4.2.0
XEN Xen=4.2.1
XEN Xen=4.2.2
XEN Xen=4.2.3
XEN Xen=4.2.4
XEN Xen=4.2.5
XEN Xen=4.3.0
XEN Xen=4.3.1
XEN Xen=4.3.2
XEN Xen=4.3.3
XEN Xen=4.3.4
XEN Xen=4.4.0
XEN Xen=4.4.1
XEN Xen=4.4.2
XEN Xen=4.4.3
XEN Xen=4.4.4
XEN Xen=4.5.0
XEN Xen=4.5.1
XEN Xen=4.5.2
XEN Xen=4.5.3
XEN Xen=4.5.5
XEN Xen=4.6.0
XEN Xen=4.6.1
XEN Xen=4.6.3
XEN Xen=4.6.4
XEN Xen=4.7.0
XEN Xen=4.7.1
Citrix XenServer=6.0.2
Citrix XenServer=6.2.0
Citrix XenServer=6.5
Citrix XenServer=7.0

Event History

Jan 23, 2017
CVE Published
via MITRE·09:00 PM
Data Sourced
via MITRE·09:00 PM
Description
Data Sourced
via NVD·09:59 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2016-9382?

CVE-2016-9382 is classified as a high severity vulnerability due to its potential to allow local privilege escalation or denial of service.

2

How do I fix CVE-2016-9382?

To fix CVE-2016-9382, you should update to a patched version of Xen that addresses the vulnerability.

3

What versions are affected by CVE-2016-9382?

CVE-2016-9382 affects Xen versions from 4.0.x through 4.7.x, including various XenServer versions.

4

What type of vulnerability is CVE-2016-9382?

CVE-2016-9382 is a local privilege escalation and denial of service vulnerability associated with improper handling of x86 task switches.

5

Can CVE-2016-9382 be exploited remotely?

No, CVE-2016-9382 requires local access to exploit, as it targets 32-bit x86 HVM guest OS users.

Contact

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