Hackers Could Overwrite Memory of Decommissioned Guests Through Improper Write Restrictions

CVE-2023-31355
6MEDIUM

Key Information

Vendor
Amd
Status
3rd Gen Amd Epyc™ Processors
4th Gen Amd Epyc™ Processors
Amd Epyc™ Embedded 7003
Amd Epyc™ Embedded 9003
Vendor
CVE Published:
5 August 2024

Summary

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.

Affected Version(s)

3rd Gen AMD EPYC™ Processors <= various

4th Gen AMD EPYC™ Processors <= various

AMD EPYC™ Embedded 7003 <= various

CVSS V3.1

Score:
6
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published.

  • Vulnerability Reserved.

Collectors

NVD DatabaseMitre Database
.