Home/CVE/Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to observe an
CVE

CVE-2023-31347

Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to observe an

Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to observe an incorrect TSC when Secure TSC is enabled potentially resulting in a loss of guest integrity.

MEDIUM · CVSS 4.9 EPSS 0.00046
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-682Incorrect Calculation
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Affected Products & Versions

60
amd epyc 7773x firmware< milanpi_1.0.0.c
amd epyc 7763 firmware< milanpi_1.0.0.c
amd epyc 7713 firmware< milanpi_1.0.0.c
amd epyc 7713p firmwareall versions
amd epyc 7663 firmware< milanpi_1.0.0.c
amd epyc 7663p firmware< milanpi_1.0.0.c
amd epyc 7643 firmware< milanpi_1.0.0.c
amd epyc 7643p firmware< milanpi_1.0.0.c
▣

Scoring & Timeline

4.9
MEDIUM · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Feb 2024 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3007Broken Link
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