Rocky Linux 8 [CIQ] Security Update: microcode_ctl Multiple Vulnerabilities (crlsa-2021_2308)

high Nessus Plugin ID 359090

Synopsis

The Rocky Linux host is missing one or more security updates.

Description

The Rocky Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CIQ crlsa-2021_2308 advisory.

* 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

This advisory is provided by Ctrl IQ, Inc for Rocky Linux systems. For more information about CIQ security practices, visit https://ciq.com/security.

Tenable has extracted the preceding description block directly from the CIQ 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 based on the guidance in CIQ advisory crlsa-2021_2308.

Plugin Details

Severity: High

ID: 359090

File Name: ciq_rocky_linux_8_crlsa-2021_2308.nasl

Version: 1.1

Type: Local

Family: Rocky Linux Local Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.3

Percentile: 96.59

Vendor

Vendor Severity: Unknown

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

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

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

Detections

Analytics