Guest memory modification via bypassed RMP checks
Published Feb 11, 2025 · Updated Feb 12, 2025
Improper access control in the IOMMU in AMD EPYC 9004 processors allows local users with administrative privileges to modify guest memory. The exact faulty IOMMU operation is undisclosed; AMD states that its access controls permit memory accesses to bypass SEV-SNP Reverse Map Table checks. Administrative control of the host is required, and exploitation is limited to compromising the integrity of protected guest memory.
Summary
What happened
Improper access control in the IOMMU in AMD EPYC 9004 processors allows local users with administrative privileges to modify guest memory. The exact faulty IOMMU operation is undisclosed; AMD states that its access controls permit memory accesses to bypass SEV-SNP Reverse Map Table checks. Administrative control of the host is required, and exploitation is limited to compromising the integrity of protected guest memory.
The record
- CVE
- CVE-2023-20581
- Published
- Feb 11, 2025
- Updated
- Feb 12, 2025
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD EPYC Embedded 9004 Series Processors
- Classifications
- CWE-1284, T1565
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Feb 11, 2025CVE publishedPublication date reported by the CVE source.
- Feb 12, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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