CVE-2016-1571 Information

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.

CVSS Vector

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

Reference

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

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.3