Detections
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Amazon Linux 2 : microcode_ctl (ALAS-2022-1762)

medium Nessus Plugin ID 158724

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of microcode_ctl installed on the remote host is prior to 2.1-47. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1762 advisory.

 - Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to potentially enable a denial of service via local access. (CVE-2021-0127)

 - Hardware allows activation of test or debug logic at runtime for some Intel(R) processors which may allow an unauthenticated user to potentially enable escalation of privilege via physical access. (CVE-2021-0146)

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

Solution

Run 'yum update microcode_ctl' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2022-1762.html

https://alas.aws.amazon.com/cve/html/CVE-2021-0127.html

https://alas.aws.amazon.com/cve/html/CVE-2021-0146.html

Plugin Details

Severity: Medium

ID: 158724

File Name: al2_ALAS-2022-1762.nasl

Version: 1.2

Type: local

Agent: unix

Published: 3/8/2022

Updated: 3/8/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-0146

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:microcode_ctl, p-cpe:/a:amazon:linux:microcode_ctl-debuginfo, cpe:/o:amazon:linux:2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/7/2022

Vulnerability Publication Date: 11/17/2021

Reference Information

CVE: CVE-2021-0127, CVE-2021-0146

ALAS: 2022-1762