CVE-2018-5244 Information

Description

In Xen 4.10 new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately one tracking structure isn’t freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/102433 http://www.securitytracker.com/id/1040774 https://security.gentoo.org/glsa/201810-06 https://xenbits.xen.org/xsa/advisory-253.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5