CVE-2023-31355

State: Published
Severity: 6.0 Medium
Published: Aug 5, 2024
Updated: Aug 6, 2024
Reserved: Apr 27, 2023

Description

Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to overwrite a guest's UMC seed potentially allowing reading of memory from a decommissioned guest.

Scores

CVSS	Score	Vector	Source
3.1	6.0 Medium	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N	AMD

Weaknesses

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Affected Products

Product	Versions
3rd Gen AMD EPYC™ ProcessorsAMD	various to before MilanPI 1.0.0.DAffected
4th Gen AMD EPYC™ ProcessorsAMD	various to before GenoaPI 1.0.0.CAffected
AMD EPYC™ Embedded 7003AMD	various to before EmbMilanPI-SP3 1.0.0.9Affected
AMD EPYC™ Embedded 9003AMD	various to before EmbGenoaPI-SP5 1.0.0.7Affected

References

https://https//www.amd.com/en/resources/product-security/bulletin/amd-sb-3011.htmlvendor-advisory

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