CVE-2023-31355 (GCVE-0-2023-31355)

Vulnerability from cvelistv5 – Published: 2024-08-05 16:04 – Updated: 2024-08-06 14:58
VLAI
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.
Severity
6 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-06 14:07 UTC
CWE
  • CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
Impacted products
Vendor Product Version
AMD 3rd Gen AMD EPYC™ Processors Affected: various , < MilanPI 1.0.0.D (Platform Initialization)
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AMD 4th Gen AMD EPYC™ Processors Affected: various , < GenoaPI 1.0.0.C (Platform Initialization)
Create a notification for this product.
AMD AMD EPYC™ Embedded 7003 Affected: various , < EmbMilanPI-SP3 1.0.0.9 (Platform Initialization)
Create a notification for this product.
AMD AMD EPYC™ Embedded 9003 Affected: various , < EmbGenoaPI-SP5 1.0.0.7 (Platform Initialization)
Create a notification for this product.
Date Public
2024-08-05 16:00
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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