National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-3887 Detail

Current Description

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 5.6 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score: 6.7 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/107850 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2019:2703
https://access.redhat.com/errata/RHSA-2019:2741
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887 Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/
https://usn.ubuntu.com/3979-1/
https://usn.ubuntu.com/3980-1/
https://usn.ubuntu.com/3980-2/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation NIST  
CWE-284 Improper Access Control Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.16


Change History

8 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-3887
NVD Published Date:
04/09/2019
NVD Last Modified:
05/21/2019