SB2022070731 - Amazon Linux AMI update for microcode_ctl

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Main Vulnerability Database SB2022070731

SB2022070731 - Amazon Linux AMI update for microcode_ctl

Published: July 7, 2022

Security Bulletin ID SB2022070731
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2022-21151)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to an error during processor optimization removal or modification of security-critical code. A local privileged user can gain access to potentially sensitive information.


2) Information disclosure (CVE-ID: CVE-2022-21166)

The vulnerability allows an attacker to gain access to potentially sensitive information.

The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.


Remediation

Install update from vendor's website.

References