Oracle Linux 6 / 7 : microcode_ctl (ELSA-2018-0093) (Spectre)

medium Nessus Plugin ID 106118
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The remote Oracle Linux host is missing a security update.


From Red Hat Security Advisory 2018:0093 :

An update for microcode_ctl is now available for Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 6.2 Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, Red Hat Enterprise Linux 6.6 Advanced Update Support, Red Hat Enterprise Linux 6.6 Telco Extended Update Support, Red Hat Enterprise Linux 6.7 Extended Update Support, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions, and Red Hat Enterprise Linux 7.3 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The microcode_ctl packages provide microcode updates for Intel and AMD processors.

This update supersedes microcode provided by Red Hat with the CVE-2017-5715 ('Spectre') CPU branch injection vulnerability mitigation. (Historically, Red Hat has provided updated microcode, developed by our microprocessor partners, as a customer convenience.) Further testing has uncovered problems with the microcode provided along with the 'Spectre' mitigation that could lead to system instabilities. As a result, Red Hat is providing an microcode update that reverts to the last known good microcode version dated before 03 January 2018. Red Hat strongly recommends that customers contact their hardware provider for the latest microcode updates.

IMPORTANT: Customers using Intel Skylake-, Broadwell-, and Haswell-based platforms must obtain and install updated microcode from their hardware vendor immediately. The 'Spectre' mitigation requires both an updated kernel from Red Hat and updated microcode from your hardware vendor.


Update the affected microcode_ctl package.

See Also

Plugin Details

Severity: Medium

ID: 106118

File Name: oraclelinux_ELSA-2018-0093.nasl

Version: 3.10

Type: local

Agent: unix

Published: 1/18/2018

Updated: 4/15/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: High

Score: 7.6


Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.7

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

Temporal Vector: E:H/RL:OF/RC:C


Risk Factor: Medium

Base Score: 5.6

Temporal Score: 5.4

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

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:microcode_ctl, cpe:/o:oracle:linux:6, cpe:/o:oracle:linux:7

Required KB Items: Host/local_checks_enabled, Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/17/2018

Vulnerability Publication Date: 1/4/2018

Reference Information

CVE: CVE-2017-5715

RHSA: 2018:0093

IAVA: 2018-A-0020