AMD Server Processor Vulnerabilities – February 2025
AMD ID: AMD-SB-3009
Potential Impact: Varies by CVE, see descriptions below
Severity: Varies by CVE, see descriptions below
Summary
Potential vulnerabilities in the AMD Secure Processor (ASP), AMD Secure Encrypted Virtualization (SEV), AMD Secure Encrypted Virtualization – Secure Nested Paging (SEV-SNP) and other platform components were discovered, and mitigations have been provided in AMD EPYC™ Platform Initialization (PI) firmware packages.
Please refer to your OEM for the BIOS update specific to your product.
CVE Details
Refer to Glossary for explanation of terms
CVE |
CVSS Score |
CVE Description |
CVE-2023-31342 |
7.5 (High) AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution. |
CVE-2023-31343 |
7.5 (High) |
Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution. |
CVE-2023-31345 |
7.5 (High) |
Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution. |
CVE-2023-31352 |
6.0 (Medium) |
A bug in the SEV firmware may allow an attacker with privileges to read unencrypted memory, potentially resulting in loss of guest private data. |
CVE-2023-20582 |
5.3 (Medium) |
Improper handling of invalid nested page table entries in the IOMMU may allow a privileged attacker to induce page table entry (PTE) faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest memory integrity. |
CVE-2023-20581 |
2.5 (Low) |
Improper access control in the IOMMU may allow a privileged attacker to bypass RMP checks, potentially leading to a loss of guest memory integrity. |
Specific CVSS scores may change subject to your implementation. We encourage you to calculate CVSS scores independently for your system.
Mitigation
Refer to the Mitigation Options provided for each product below.
Data Center
3rd Gen AMD EPYC™ Processors formerly codenamed “Milan" and “Milan-X”
AMD recommends updating to the Platform Initialization (PI) firmware version indicated below.
CPUIDs |
Mitigation Option 1 |
Mitigation Option 2 |
TCB Values |
|||
Code Name |
CPUID |
|
|
|
||
Milan |
0x00A00F11 |
Platform |
μcode |
SEV FW |
||
Milan-X |
0x00A00F12 |
|||||
Minimum firmware versions to mitigate all applicable CVEs below |
MilanPI 1.0.0.C |
N/A |
||||
CVE-2023-31342 |
7.5 (High) |
MilanPI 1.0.0.C |
N/A |
N/A |
N/A |
|
CVE-2023-31343 |
7.5 (High) |
MilanPI 1.0.0.C
|
N/A |
N/A |
N/A |
|
CVE-2023-31345 |
7.5 (High) |
MilanPI 1.0.0.C
|
N/A |
N/A |
N/A |
|
CVE-2023-31352 |
6.0 (Medium) |
Not affected |
N/A |
N/A |
N/A |
|
CVE-2023-20582 |
5.3 (Medium) |
Not affected |
N/A |
N/A |
N/A |
|
CVE-2023-20581 |
2.5 (Low) |
Not affected |
N/A |
N/A |
N/A |
|
4th Gen AMD EPYC™ Processors formerly codenamed "Genoa", “Genoa-X”, “Bergamo”, and “Siena”
AMD recommends updating to the Platform Initialization (PI) firmware versions indicated below.
CPUIDs |
Mitigation Option 1 |
Mitigation Option 2 |
TCB Values |
||
Code Name |
CPUID |
Platform |
μcode |
SEV FW |
N/A |
Genoa |
0x00A10F11 |
||||
Genoa-X |
0x00A10F12 |
||||
Bergamo/Siena |
0x00AA0F0 |
||||
Minimum firmware versions to mitigate all listed CVEs |
GenoaPI 1.0.0.C
SEV FW1.55.36 |
||||
CVE-2023-31342 |
7.5 (High) |
GenoaPI 1.0.0.B |
N/A |
N/A |
N/A |
CVE-2023-31343 |
7.5 (High) |
GenoaPI 1.0.0.B |
N/A |
N/A |
N/A |
CVE-2023-31345 |
7.5 (High) |
GenoaPI 1.0.0.B |
N/A |
N/A |
N/A |
CVE-2023-31352* |
6.0 (Medium) |
GenoaPI 1.0.0.C + SEV FW1.55.36 |
N/A |
N/A |
TCB[SNP]=0x15 |
CVE-2023-20582 |
5.3 (Medium) |
N/A |
N/A |
TCB[SNP]=0x15 |
|
CVE-2023-20581 |
2.5 (Low) |
N/A |
N/A |
TCB[SNP]=0x15 |
|
*1: CVE-2023-31352 vulnerability impacts only if Genoa platform has a CXL connected memory
*2: Will require minimum versions of both PI + SEV updates to mitigate CVE-2023-31352, CVE-2023-20582, CVE-2023-20581
Data Center Graphics
CVE |
Severity |
AMD Instinct™ MI300A |
| Minimum version to mitigate all listed CVEs | ||
CVE-2023-31342 |
7.5 (High) |
MI300API 1.0.0.5 |
CVE-2023-31343 |
7.5 (High) |
MI300API 1.0.0.5 |
CVE-2023-31345 |
7.5 (High) |
MI300API 1.0.0.5 |
CVE-2023-31352 |
6.0 (Medium) |
Not affected |
CVE-2023-20582 |
5.3 (Medium) |
Not affected |
CVE-2023-20581 |
2.5 (Low) |
Not affected |
Acknowledgement
AMD thanks the following for reporting these issues and engaging in coordinated vulnerability disclosure:
CVE-2023-31342: yngweijw (Jiawei Yin)
CVE-2023-31343, CVE-2023-31345: vul_pwner
Internally found: CVE-2023-20581, CVE-2023-20582, CVE-2023-31352
Revisions
Revision Date |
Description |
2025-02-11 |
Initial publication |
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