RHEL 7 : microcode_ctl (RHSA-2021:2304)

high Nessus Plugin ID 150393
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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-2021:2304 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)

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

Solution

Update the affected microcode_ctl package.

See Also

https://cwe.mitre.org/data/definitions/200.html

https://cwe.mitre.org/data/definitions/459.html

https://access.redhat.com/security/cve/CVE-2020-24489

https://access.redhat.com/security/cve/CVE-2020-24511

https://access.redhat.com/security/cve/CVE-2020-24512

https://access.redhat.com/security/cve/CVE-2020-24513

https://access.redhat.com/errata/RHSA-2021:2304

https://bugzilla.redhat.com/1962650

https://bugzilla.redhat.com/1962666

https://bugzilla.redhat.com/1962702

https://bugzilla.redhat.com/1962722

Plugin Details

Severity: High

ID: 150393

File Name: redhat-RHSA-2021-2304.nasl

Version: 1.5

Type: local

Agent: unix

Published: 6/9/2021

Updated: 10/7/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl

Risk Information

CVSS Score Source: CVE-2020-24489

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

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

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_aus:7.7, cpe:/o:redhat:rhel_e4s:7.6, cpe:/o:redhat:rhel_e4s:7.7, cpe:/o:redhat:rhel_eus:7.7, cpe:/o:redhat:rhel_tus:7.7, 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

RHSA: 2021:2304

CWE: 200, 459