CVE-2016-9382 Information

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/94470 http://www.securitytracker.com/id/1037341 http://xenbits.xen.org/xsa/advisory-192.html https://security.gentoo.org/glsa/201612-56 https://support.citrix.com/article/CTX218775

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8