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CentOS Linux 7 [TuxCare] Security Update: microcode_ctl Multiple Vulnerabilities (CENTOS7:CLSA-2023:1701444720)

high Nessus Plugin ID 352331

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Synopsis

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

Description

The CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2023:1701444720 advisory.

 - Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2022-40982)

 - Unauthorized error injection in Intel(R) SGX or Intel(R) TDX for some Intel(R) Xeon(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access. (CVE-2022-41804)

 - Sequence of processor instructions leads to unexpected behavior for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege and/or information disclosure and/or denial of service via local access. (CVE-2023-23583)

 - Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable information disclosure via local access. (CVE-2023-23908)

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 TuxCare advisory CENTOS7:CLSA-2023:1701444720.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2023:1701444720

http://www.nessus.org/u?b79d1478

Plugin Details

Severity: High

ID: 352331

File Name: tuxcare_centos_7_CLSA-2023-1701444720.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/30/2026

Updated: 9/30/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.1

Percentile: 96.31

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-23583

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/1/2023

Vulnerability Publication Date: 8/3/2023

Reference Information

CVE: CVE-2022-40982, CVE-2022-41804, CVE-2023-23583, CVE-2023-23908

CLSA: 2023:1701444720