CVE-2016-7777

CVE Details

Release Date:	2016-10-04
Impact:	Moderate	What is this?

Description

Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, whichallows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it.

See more information about CVE-2016-7777 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	4.9
Vector String:	AV:N/AC:M/Au:S/C:P/I:P/A:N
Version:	2.0
Attack Vector:	Network
Attack Complexity:	Medium
Authentication:	Single
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle VM version 3.2 (xen)	OVMSA-2016-0166	2016-11-22
Oracle VM version 3.3 (xen)	OVMSA-2016-0165	2016-11-22
Oracle VM version 3.4 (xen)	OVMSA-2016-0164	2016-11-22