Vulmon
Amazon Linux 1 Security Advisory: ALAS-2023-1890
Advisory Release Date: 2023-11-10 20:56 Pacific
Advisory Updated Date: 2023-11-15 23:26 Pacific
Severity:
Important
Issue Overview:
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
Issue Correction:
Run yum update microcode_ctl to update your system.
New Packages:
i686:
microcode_ctl-debuginfo-2.1-47.42.amzn1.i686
microcode_ctl-2.1-47.42.amzn1.i686
src:
microcode_ctl-2.1-47.42.amzn1.src
x86_64:
microcode_ctl-2.1-47.42.amzn1.x86_64
microcode_ctl-debuginfo-2.1-47.42.amzn1.x86_64