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RedhatCVE-2019-3887

HistoryApr 09, 2019 - 4:29 p.m.

CVE-2019-3887

2019-04-0916:29:01

CWE-863

redhat

web.nvd.nist.gov

104

cve-2019-3887

kvm hypervisor

x2apic

msr

nested virtualization

dos

nvd

CVSS2

4.7

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:N/I:N/A:C

CVSS3

5.6

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

AI Score

Confidence

High

EPSS

0.001

Percentile

20.6%

JSON

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.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange4.16≥

Node

fedoraprojectfedoraMatch29

Node

canonicalubuntu_linuxMatch18.04lts

canonicalubuntu_linuxMatch18.10

canonicalubuntu_linuxMatch19.04

Node

redhatenterprise_linuxMatch8.0

redhatenterprise_linux_eusMatch8.1

redhatenterprise_linux_eusMatch8.2

redhatenterprise_linux_eusMatch8.4

redhatenterprise_linux_for_real_timeMatch8

redhatenterprise_linux_for_real_time_for_nfvMatch8

redhatenterprise_linux_for_real_time_for_nfv_tusMatch8.2

redhatenterprise_linux_for_real_time_for_nfv_tusMatch8.4

redhatenterprise_linux_for_real_time_tusMatch8.2

redhatenterprise_linux_for_real_time_tusMatch8.4

redhatenterprise_linux_server_ausMatch8.2

redhatenterprise_linux_server_ausMatch8.4

redhatenterprise_linux_server_tusMatch8.2

redhatenterprise_linux_server_tusMatch8.4

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
fedoraprojectfedora29cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
canonicalubuntu_linux18.04cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.10cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
canonicalubuntu_linux19.04cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
redhatenterprise_linux_eus8.1cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
redhatenterprise_linux_eus8.2cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
redhatenterprise_linux_eus8.4cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
redhatenterprise_linux_for_real_time8cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
fedoraproject	fedora	29	cpe:2.3:o:fedoraproject:fedora:29:::::::*
canonical	ubuntu_linux	18.04	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
canonical	ubuntu_linux	18.10	cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*
canonical	ubuntu_linux	19.04	cpe:2.3:o:canonical:ubuntu_linux:19.04:::::::*
redhat	enterprise_linux	8.0	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
redhat	enterprise_linux_eus	8.1	cpe:2.3:o:redhat:enterprise_linux_eus:8.1:::::::*
redhat	enterprise_linux_eus	8.2	cpe:2.3:o:redhat:enterprise_linux_eus:8.2:::::::*
redhat	enterprise_linux_eus	8.4	cpe:2.3:o:redhat:enterprise_linux_eus:8.4:::::::*
redhat	enterprise_linux_for_real_time	8	cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:::::::*

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CNA Affected

[
  {
    "vendor": "The Linux Foundation",
    "product": "Kernel",
    "versions": [
      {
        "version": "from 4.16",
        "status": "affected"
      }
    ]
  }
]