Detections
Analytics
Amazon Linux 2 : microcode_ctl (ALAS-2022-1762)
medium Nessus Plugin ID 158724
Language:
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.2024-05-09: CVE-2021-33117 was added to this advisory.
A flaw was found in microcode. Under complex microarchitectural conditions, an unexpected code breakpoint may cause a system hang. The hang was observed on a Skylake server processor, and subsequent analysis indicated additional potentially affected processors. This flaw allows a possible temporary denial of service (TDOS) to occur. (CVE-2021-0127)
Hardware allows activation of test and 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)
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)
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.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: 1.4
Type: local
Agent: unix
Published: 3/8/2022
Updated: 12/11/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous 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, cpe:/o:amazon:linux:2, 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: 3/7/2022
Vulnerability Publication Date: 11/17/2021
Reference Information
CVE: CVE-2021-0127, CVE-2021-0146, CVE-2021-33117
ALAS: 2022-1762