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Debian DSA-4232-1 : xen - security update

medium Nessus Plugin ID 110624

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Synopsis

The remote Debian host is missing a security-related update.

Description

This update provides mitigations for the 'lazy FPU' vulnerability affecting a range of Intel CPUs, which could result in leaking CPU register states belonging to another vCPU previously scheduled on the same CPU. For additional information please refer to https://xenbits.xen.org/xsa/advisory-267.html

Solution

Upgrade the xen packages.

For the stable distribution (stretch), this problem has been fixed in version 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u8.

See Also

https://xenbits.xen.org/xsa/advisory-267.html

https://security-tracker.debian.org/tracker/source-package/xen

https://packages.debian.org/source/stretch/xen

https://www.debian.org/security/2018/dsa-4232

Plugin Details

Severity: Medium

ID: 110624

File Name: debian_DSA-4232.nasl

Version: 1.5

Type: local

Agent: unix

Published: 6/21/2018

Updated: 11/13/2018

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.7

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

CVSS v3

Risk Factor: Medium

Base Score: 5.6

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:xen, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 6/20/2018

Reference Information

CVE: CVE-2018-3665

DSA: 4232