Amazon Linux 2 Security Advisory: ALAS-2023-2341
Advisory Release Date: 2023-11-09 19:19 Pacific
Advisory Updated Date: 2023-11-15 21:09 Pacific
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). (CVE-2023-23583)
Affected Packages:
microcode_ctl
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update microcode_ctl to update your system.
i686:
microcode_ctl-2.1-47.amzn2.4.15.i686
microcode_ctl-debuginfo-2.1-47.amzn2.4.15.i686
src:
microcode_ctl-2.1-47.amzn2.4.15.src
x86_64:
microcode_ctl-2.1-47.amzn2.4.15.x86_64
microcode_ctl-debuginfo-2.1-47.amzn2.4.15.x86_64