Information Exposure Affecting amd64-microcode package, versions <3.20191218.1ubuntu1.2


Severity

Recommended
high

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.07% (33rd percentile)

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  • Snyk IDSNYK-UBUNTU2004-AMD64MICROCODE-5829062
  • published9 Aug 2023
  • disclosed8 Aug 2023

Introduced: 8 Aug 2023

CVE-2023-20569  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 amd64-microcode to version 3.20191218.1ubuntu1.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream amd64-microcode package and not the amd64-microcode package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.

CVSS Scores

version 3.1