QID 356998

Date Published: 2024-01-17

QID 356998: Amazon Linux Security Advisory for microcode_ctl : AL2012-2023-482

Package updates are available for Amazon Linux that fix the following vulnerabilities:
CVE-2023-23583:
An issue was found in redundant REX instruction prefix values affecting third generation Intel Xeon Scalable (?Icelake?) processors. The issue may allow a local third-party actor using such instructions to cause a denial of service (DOS) or achieve privilege escalation. CVE-2023-23583 only affects Amazon Linux customers on EC2 metal platforms. Please refer to the AWS Security Bulletin for more information on the affected instance families and the impacts on AWS services: (https://aws.amazon.com/security/security-bulletins/AWS-2023-013)

Successful exploitation of this vulnerability could lead to a security breach or could affect integrity, availability, and confidentiality.

CVSS V3 rated as High - 7.8 severity.

CVSS V2 rated as Medium - 5.4 severity.

Solution

Administrators are advised to apply the appropriate software updates.

Vendor References

CVEs related to QID 356998

CVE-2023-23583 |

Software Advisories

Advisory ID	Software	Component	Link
AL2012-2023-482	Amazon Linux Bare Metal		docs.aws.amazon.com/AWSEC2/latest/UserGuide/install-updates.html

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