CVE-2016-1571

MEDIUM

Description

The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check.

References

http://support.citrix.com/article/CTX205496

http://www.debian.org/security/2016/dsa-3519

http://www.securitytracker.com/id/1034745

http://xenbits.xen.org/xsa/advisory-168.html

Details

Source: MITRE

Published: 2016-01-22

Updated: 2018-10-30

Type: CWE-17

Risk Information

CVSS v2.0

Base Score: 4.7

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

Impact Score: 6.9

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3.0

Base Score: 6.3

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

Impact Score: 4

Exploitability Score: 1.8

Severity: MEDIUM