RHEL 7 : microcode_ctl (RHSA-2021:2301)

high Nessus Plugin ID 150392

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:2301 advisory.

The microcode_ctl packages provide microcode updates for Intel.

Security Fix(es):

* hw: vt-d related privilege escalation (CVE-2020-24489)

* hw: improper isolation of shared resources in some Intel Processors (CVE-2020-24511)

* hw: observable timing discrepancy in some Intel Processors (CVE-2020-24512)

* hw: information disclosure on some Intel Atom processors (CVE-2020-24513)

Bug Fix(es) and Enhancement(s):

* Update Intel CPU microcode to microcode-20210525 release

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected microcode_ctl package.

See Also

http://www.nessus.org/u?0228a43c

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/errata/RHSA-2021:2301

https://bugzilla.redhat.com/show_bug.cgi?id=1962650

https://bugzilla.redhat.com/show_bug.cgi?id=1962666

https://bugzilla.redhat.com/show_bug.cgi?id=1962702

https://bugzilla.redhat.com/show_bug.cgi?id=1962722

Plugin Details

Severity: High

ID: 150392

File Name: redhat-RHSA-2021-2301.nasl

Version: 1.10

Type: local

Agent: unix

Published: 6/9/2021

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-24489

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_tus:7.4, cpe:/o:redhat:rhel_aus:7.4, cpe:/o:redhat:rhel_e4s:7.4, p-cpe:/a:redhat:enterprise_linux:microcode_ctl

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/9/2021

Vulnerability Publication Date: 6/9/2021

Reference Information

CVE: CVE-2020-24489, CVE-2020-24511, CVE-2020-24512, CVE-2020-24513

CWE: 200, 459

RHSA: 2021:2301