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CVE-2016-9382

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Date: January 23, 2017

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.

Language: C

Severity Score

Related Resources (7)

https://support.citrix.com/article/CTX218775
http://xenbits.xen.org/xsa/advisory-192.html
https://security.gentoo.org/glsa/201612-56
http://www.securitytracker.com/id/1037341
http://www.securityfocus.com/bid/94470
https://nvd.nist.gov/vuln/detail/CVE-2016-9382
https://www.mend.io/vulnerability-database/CVE-2016-9382

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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