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RHEL 9 : microcode_ctl (RHSA-2025:7043)

medium Nessus Plugin ID 235814

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Synopsis

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

Description

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:7043 advisory.

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

 Security Fix(es):

 * microcode_ctl: Improper input validation in UEFI firmware (CVE-2024-28047)

 * microcode_ctl: Insufficient granularity of access control in UEFI firmware (CVE-2024-39279)

 * microcode_ctl: mproper initialization in UEFI firmware OutOfBandXML module (CVE-2024-31157)

 For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

 Additional Changes:

 For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.

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 RHEL microcode_ctl package based on the guidance in RHSA-2025:7043.

See Also

http://www.nessus.org/u?a7e51e86

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

https://bugzilla.redhat.com/show_bug.cgi?id=2345363

https://bugzilla.redhat.com/show_bug.cgi?id=2345381

https://bugzilla.redhat.com/show_bug.cgi?id=2345421

https://issues.redhat.com/browse/RHEL-67336

http://www.nessus.org/u?fe139c46

https://access.redhat.com/errata/RHSA-2025:7043

Plugin Details

Severity: Medium

ID: 235814

File Name: redhat-RHSA-2025-7043.nasl

Version: 1.1

Type: local

Agent: unix

Published: 5/13/2025

Updated: 5/13/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Low

Base Score: 3.7

Temporal Score: 2.7

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

CVSS Score Source: CVE-2024-31157

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.8

Threat Score: 3.3

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

CVSS Score Source: CVE-2024-39279

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:microcode_ctl, cpe:/o:redhat:enterprise_linux:9

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: 5/13/2025

Vulnerability Publication Date: 2/12/2025

Reference Information

CVE: CVE-2024-28047, CVE-2024-31157, CVE-2024-39279

CWE: 1220, 20, 665

RHSA: 2025:7043