National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-7777 Detail

Current Description

Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 6.3 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/93344 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036942 Third Party Advisory VDB Entry
http://xenbits.xen.org/xsa/advisory-190.html Mitigation Patch Vendor Advisory
https://security.gentoo.org/glsa/201611-09
https://support.citrix.com/article/CTX217363

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
4.7.0


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-7777
NVD Published Date:
10/07/2016
NVD Last Modified:
06/30/2017