CVE-2018-5244

medium

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.

References

https://xenbits.xen.org/xsa/advisory-253.html

https://security.gentoo.org/glsa/201810-06

http://www.securitytracker.com/id/1040774

http://www.securityfocus.com/bid/102433

Details

Source: Mitre, NVD

Published: 2018-01-05

Updated: 2018-10-31

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.5

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

Severity: Medium