CVE-2016-9382

high

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.

References

https://support.citrix.com/article/CTX218775

https://security.gentoo.org/glsa/201612-56

http://xenbits.xen.org/xsa/advisory-192.html

http://www.securitytracker.com/id/1037341

http://www.securityfocus.com/bid/94470

Details

Source: Mitre, NVD

Published: 2017-01-23

Updated: 2017-07-01

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High