Amazon Linux AMI : microcode_ctl (ALAS-2022-1606)

medium Nessus Plugin ID 162834

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

The version of microcode_ctl installed on the remote host is prior to 2.1-47.40. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2022-1606 advisory.

2024-05-09: CVE-2021-33117 was added to this advisory.

Improper access control for some 3rd Generation Intel(R) Xeon(R) Scalable Processors before BIOS version MR7, may allow a local attacker to potentially enable information disclosure via local access.
(CVE-2021-33117)

A flaw was found in hw. Processor optimization removal or modification of security-critical code for some Intel(R) processors may potentially allow an authenticated user to enable information disclosure via local access. (CVE-2022-21151)

A flaw was found in hw. Incomplete cleanup in specific special register write operations for some Intel Processors may allow an authenticated user to enable information disclosure via local access.
(CVE-2022-21166)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update microcode_ctl' to update your system.

Plugin Details

Severity: Medium

ID: 162834

File Name: ala_ALAS-2022-1606.nasl

Version: 1.5

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 7/8/2022

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2022-21166

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:microcode_ctl, p-cpe:/a:amazon:linux:microcode_ctl-debuginfo

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/30/2022

Vulnerability Publication Date: 5/12/2022

Reference Information

CVE: CVE-2021-33117, CVE-2022-21151, CVE-2022-21166

Detections

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