CVE-2023-20584 Affecting amd64-microcode package, versions <3.20240820.1~deb11u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-DEBIAN11-AMD64MICROCODE-7725407
  • published21 Aug 2024
  • disclosed13 Aug 2024

Introduced: 13 Aug 2024

CVE-2023-20584  (opens in a new tab)

How to fix?

Upgrade Debian:11 amd64-microcode to version 3.20240820.1~deb11u1 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 Debian. See How to fix? for Debian:11 relevant fixed versions and status.

IOMMU improperly handles certain special address ranges with invalid device table entries (DTEs), which may allow an attacker with privileges and a compromised Hypervisor to induce DTE faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest integrity.

CVSS Scores

version 3.1