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 these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected microcode_ctl package.See Also
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
Plugin Details
Severity: High
ID: 150393
File Name: redhat-RHSA-2021-2304.nasl
Version: 1.8
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 6/9/2021
Updated: 1/23/2023
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent
Risk Information
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 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: E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:rhel_aus:7.7, 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