CVE-2023-31346: Medium severity AMD Epyc 7773x Firmware vulnerability

Published Nov 18, 2023
·
Updated

Failure to initialize memory in SEV Firmware may allow a privileged attacker to access stale data from other guests.

Other sources

Reserved fields in guest message responses may not be zero initialized. The size of(snpmsgcpuidrspt) bytes are zero initialized, but ReqHdr->msgsize is sent out for the request. If a guest sets ReqHdr->msgsize to a higher value than sizeof(snpmsgcpuidrspt), the firmware may leak stale memory from gpSevScratchBuf+(PAGESIZE4K3). The stale data leaked to software may contain guest private data or SEV firmware sensitive data.

— Red Hat

Affected Software

126 affected components
All of the following
AMD Epyc 7773x Firmware<milanpi_1.0.0.c
AMD Epyc 7773x
All of the following
AMD Epyc 7763 Firmware<milanpi_1.0.0.c
AMD Epyc 7763
All of the following
AMD Epyc 7713 Firmware<milanpi_1.0.0.c
AMD Epyc 7713
All of the following
AMD Epyc 7713p Firmware<milanpi_1.0.0.c
AMD Epyc 7713p
All of the following
AMD Epyc 7663 Firmware<milanpi_1.0.0.c
AMD Epyc 7663
All of the following
AMD Epyc 7663p Firmware<milanpi_1.0.0.c
AMD Epyc 7663p
All of the following
AMD Epyc 7643 Firmware<milanpi_1.0.0.c
AMD Epyc 7643
All of the following
AMD Epyc 7643p Firmware<milanpi_1.0.0.c
AMD Epyc 7643p
All of the following
AMD Epyc 7573x Firmware<milanpi_1.0.0.c
AMD Epyc 7573x
All of the following
AMD Epyc 75f3 Firmware<milanpi_1.0.0.c
AMD Epyc 75f3
All of the following
AMD Epyc 7543 Firmware<milanpi_1.0.0.c
AMD Epyc 7543
All of the following
AMD Epyc 7543p Firmware<milanpi_1.0.0.c
AMD Epyc 7543p
All of the following
AMD Epyc 7513 Firmware<milanpi_1.0.0.c
AMD Epyc 7513
All of the following
AMD Epyc 7453 Firmware<milanpi_1.0.0.c
AMD Epyc 7453
All of the following
AMD Epyc 7473x Firmware<milanpi_1.0.0.c
AMD Epyc 7473x
All of the following
AMD Epyc 74f3 Firmware<milanpi_1.0.0.c
AMD Epyc 74f3
All of the following
AMD Epyc 7443 Firmware<milanpi_1.0.0.c
AMD Epyc 7443
All of the following
AMD Epyc 7443p Firmware<milanpi_1.0.0.c
AMD Epyc 7443p
All of the following
AMD Epyc 7413 Firmware<milanpi_1.0.0.c
AMD Epyc 7413
All of the following
AMD Epyc 7373x Firmware<milanpi_1.0.0.c
AMD Epyc 7373x
All of the following
AMD Epyc 73f3 Firmware<milanpi_1.0.0.c
AMD Epyc 73f3
All of the following
AMD Epyc 7343 Firmware<milanpi_1.0.0.c
AMD Epyc 7343
All of the following
AMD Epyc 7313 Firmware<milanpi_1.0.0.c
AMD Epyc 7313
All of the following
AMD Epyc 7313p Firmware<milanpi_1.0.0.c
AMD Epyc 7313p
All of the following
AMD Epyc 7303 Firmware<milanpi_1.0.0.c
AMD Epyc 7303
All of the following
AMD Epyc 7303p Firmware<milanpi_1.0.0.c
AMD Epyc 7303p
All of the following
AMD Epyc 72f3 Firmware<milanpi_1.0.0.c
AMD Epyc 72f3
All of the following
AMD Epyc 7203 Firmware<milanpi_1.0.0.c
AMD Epyc 72f3
All of the following
AMD Epyc 7203p Firmware<milanpi_1.0.0.c
AMD Epyc 7203p
All of the following
AMD Epyc 8024p Firmware<genoapi_1.0.0.b
AMD Epyc 8024p
All of the following
AMD Epyc 8024pn Firmware<genoapi_1.0.0.b
AMD Epyc 8024pn
All of the following
AMD Epyc 8124p Firmware<genoapi_1.0.0.b
AMD Epyc 8124p
All of the following
AMD Epyc 8124pn Firmware<genoapi_1.0.0.b
AMD Epyc 8124pn
All of the following
AMD Epyc 8224p Firmware<genoapi_1.0.0.b
AMD Epyc 8224p
All of the following
AMD Epyc 8224pn Firmware<genoapi_1.0.0.b
AMD Epyc 8224pn
All of the following
AMD Epyc 8324p Firmware<genoapi_1.0.0.b
AMD Epyc 8324p
All of the following
AMD Epyc 8324pn Firmware<genoapi_1.0.0.b
AMD Epyc 8324pn
All of the following
AMD Epyc 8434p Firmware<genoapi_1.0.0.b
AMD Epyc 8434p
All of the following
AMD Epyc 8434pn Firmware<genoapi_1.0.0.b
AMD Epyc 8434pn
All of the following
AMD Epyc 8534p Firmware<genoapi_1.0.0.b
AMD Epyc 8534p
All of the following
AMD Epyc 8534pn Firmware<genoapi_1.0.0.b
AMD Epyc 8534pn
All of the following
AMD Epyc 9124 Firmware<genoapi_1.0.0.b
AMD Epyc 9124
All of the following
AMD Epyc 9224 Firmware<genoapi_1.0.0.b
AMD Epyc 9224
All of the following
AMD Epyc 9254 Firmware<genoapi_1.0.0.b
AMD Epyc 9254
All of the following
AMD Epyc 9334 Firmware<genoapi_1.0.0.b
AMD Epyc 9334
All of the following
AMD Epyc 9354 Firmware<genoapi_1.0.0.b
AMD Epyc 9354
All of the following
AMD Epyc 9354p Firmware<genoapi_1.0.0.b
AMD Epyc 9354p
All of the following
AMD Epyc 9174f Firmware<genoapi_1.0.0.b
AMD Epyc 9174f
All of the following
AMD Epyc 9184x Firmware<genoapi_1.0.0.b
AMD Epyc 9184x
All of the following
AMD Epyc 9274f Firmware<genoapi_1.0.0.b
AMD Epyc 9274f
All of the following
AMD Epyc 9374f Firmware<genoapi_1.0.0.b
AMD Epyc 9374f
All of the following
AMD Epyc 9384x Firmware<genoapi_1.0.0.b
AMD Epyc 9384x
All of the following
AMD Epyc 9474f Firmware<genoapi_1.0.0.b
AMD Epyc 9474f
All of the following
AMD Epyc 9454 Firmware<genoapi_1.0.0.b
AMD Epyc 9454
All of the following
AMD Epyc 9454p Firmware<genoapi_1.0.0.b
AMD Epyc 9454p
All of the following
AMD Epyc 9534 Firmware<genoapi_1.0.0.b
AMD Epyc 9534
All of the following
AMD Epyc 9554 Firmware<genoapi_1.0.0.b
AMD Epyc 9554
All of the following
AMD Epyc 9554p Firmware<genoapi_1.0.0.b
AMD Epyc 9554p
All of the following
AMD Epyc 9634 Firmware<genoapi_1.0.0.b
AMD Epyc 9634
All of the following
AMD Epyc 9654 Firmware<genoapi_1.0.0.b
AMD Epyc 9654
All of the following
AMD Epyc 9654p Firmware<genoapi_1.0.0.b
AMD Epyc 9654p
All of the following
AMD Epyc 9684x Firmware<genoapi_1.0.0.b
AMD Epyc 9684x
IBM DS8A00( R10.0 - R10.1 )<=10.1.3.0 - 10.10.106.0
IBM DS8900F ( R9.4)<=89.40.83.0-89.44.5.0

Event History

Nov 18, 2023
Data Sourced
via Red Hat·06:52 PM
DescriptionSeverityAffected Software
Feb 13, 2024
CVE Published
via MITRE·07:18 PM
Data Sourced
via MITRE·07:18 PM
Description
Dec 18, 2025
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2023-31346?

CVE-2023-31346 is considered a high-severity vulnerability due to potential sensitive information exposure.

2

How do I fix CVE-2023-31346?

To mitigate CVE-2023-31346, update the affected AMD Epyc firmware to the latest version available that addresses the vulnerability.

3

Who is affected by CVE-2023-31346?

CVE-2023-31346 affects local authenticated users of certain AMD Epyc processors running vulnerable firmware versions.

4

What types of exploitation does CVE-2023-31346 allow?

CVE-2023-31346 allows an attacker to access stale data from other guests, potentially leading to information disclosure.

5

Which products are impacted by CVE-2023-31346?

Products impacted by CVE-2023-31346 include various AMD Epyc processor firmware versions, specifically below milanpi_1.0.0.c.

Company

Resources

Contact

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