low
3.2
Advisory Published
Updated

CVE-2023-20573: Debug Exception Delivery in Secure Nested Paging

First published: Thu Jan 11 2024(Updated: )

A privileged attacker can prevent delivery of debug exceptions to SEV-SNP guests potentially resulting in guests not receiving expected debug information.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
All of
AMD EPYC 7763 Firmware
AMD EPYC 7763 Firmware
All of
AMD EPYC 7713P Firmware
AMD EPYC 7713P Firmware
All of
AMD EPYC 7713P Firmware
AMD EPYC 7713
All of
amd epyc 7663p firmware
amd epyc 7663p
All of
AMD EPYC 7663 Firmware
AMD EPYC 7663 Firmware
All of
Amd Epyc Server Firmware
amd epyc 7643p
All of
AMD EPYC 7773X Firmware
AMD EPYC 7773X
All of
AMD EPYC 7643 Firmware
AMD EPYC 7643
All of
AMD EPYC 7573X Firmware
AMD EPYC 7573X
All of
AMD EPYC 75F3 Firmware
AMD EPYC 75F3
All of
AMD EPYC 7543P Firmware
AMD EPYC 7543P Firmware
All of
Amd Epyc Server Firmware
AMD EPYC 7543 Firmware
All of
AMD EPYC 7513 Firmware
AMD EPYC 7513
All of
AMD EPYC 7473X Firmware
AMD EPYC 7473X
All of
Amd Epyc Server Firmware
AMD EPYC 7453
All of
AMD EPYC 74F3 Firmware
AMD EPYC 74F3
All of
AMD EPYC 7443P Firmware
AMD EPYC 7443P
All of
AMD EPYC 7443 Firmware
AMD EPYC 7443
All of
AMD EPYC 7413 Firmware
AMD EPYC 7413 Firmware
All of
AMD EPYC 7373X Firmware
AMD EPYC 7373X
All of
AMD EPYC 73F3 Firmware
AMD EPYC 73F3
All of
Amd Epyc Server Firmware
AMD EPYC 7343
All of
AMD EPYC 7313P Firmware
AMD EPYC 7313P
All of
Amd Epyc Server Firmware
AMD EPYC 7313P
All of
Amd Epyc Server Firmware
amd epyc 7303p
All of
Amd Epyc Server Firmware
amd epyc 7303
All of
AMD EPYC 72F3 Firmware
AMD EPYC 72F3 Firmware
All of
Amd Epyc Server Firmware
amd epyc 7203p
All of
Amd Epyc Server Firmware
amd epyc 7203
All of
AMD EPYC 9654P Firmware
AMD EPYC 9654P
All of
AMD EPYC 9654 firmware
AMD EPYC 9654 firmware
All of
AMD EPYC 9634 Firmware
AMD EPYC 9634 Firmware
All of
AMD EPYC 9554P Firmware
AMD EPYC 9554P Firmware
All of
AMD EPYC 9554 Firmware
AMD EPYC 9554
All of
AMD EPYC 9534 Firmware
AMD EPYC 9534
All of
AMD Epyc 9474F Firmware
AMD Epyc 9474F Firmware
All of
AMD EPYC 9454P Firmware
AMD EPYC 9454P
All of
AMD EPYC 9454P Firmware
AMD EPYC 9454P
All of
AMD EPYC 9374F Firmware
AMD EPYC 9374F Firmware
All of
AMD EPYC 9354P Firmware
AMD EPYC 9354P
All of
AMD EPYC 9354 Firmware
AMD EPYC 9354 Firmware
All of
AMD EPYC 9334 firmware
AMD EPYC 9334 firmware
All of
AMD EPYC 9274F Firmware
AMD EPYC 9274F Firmware
All of
AMD EPYC 9254 Firmware
AMD EPYC 9254
All of
AMD EPYC 9224 Firmware
AMD EPYC 9224
All of
AMD EPYC 9174F Firmware
AMD EPYC 9174F
All of
AMD EPYC 9124 Firmware
AMD EPYC 9124 Firmware
All of
AMD EPYC 9684X Firmware
AMD EPYC 9684X Firmware
All of
AMD EPYC 9384X Firmware
AMD EPYC 9384X
All of
AMD EPYC 9184X firmware
AMD EPYC 9184X
All of
Amd Epyc Server Firmware
AMD EPYC 9754 Firmware
All of
AMD EPYC 9754S Firmware
AMD Epyc 9754S
All of
AMD EPYC 9734 Firmware
AMD EPYC 9734 Firmware
All of
amd epyc 8534p firmware
amd epyc 8534p
All of
amd epyc 8534pn firmware
amd epyc 8534pn
All of
amd epyc 8434p firmware
amd epyc 8434p
All of
Amd Epyc Server Firmware
amd epyc 8434pn
All of
amd epyc 8324p firmware
amd epyc 8324p
All of
amd epyc 8324pn firmware
amd epyc 8324pn
All of
amd epyc 8224p firmware
amd epyc 8224p
All of
Amd Epyc Server Firmware
amd epyc 8224pn
All of
amd epyc 8124p firmware
amd epyc 8124p
All of
amd epyc 8124pn firmware
amd epyc 8124pn
All of
amd epyc 8024p firmware
amd epyc 8024p
All of
amd epyc 8024pn firmware
amd epyc 8024pn

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-20573?

    CVE-2023-20573 is classified as a moderate severity vulnerability as it allows a privileged attacker to interfere with debug exception delivery to SEV-SNP guests.

  • How do I fix CVE-2023-20573?

    To fix CVE-2023-20573, ensure that you update the affected AMD EPYC firmware as per the provider's security bulletin.

  • What are the affected systems in CVE-2023-20573?

    CVE-2023-20573 primarily affects certain AMD EPYC firmware versions, including those for EPYC 7763, 7713p, and several others.

  • Who is impacted by CVE-2023-20573?

    Organizations using vulnerable AMD EPYC processors in environments utilizing SEV-SNP are at risk from CVE-2023-20573.

  • What is the nature of the vulnerability in CVE-2023-20573?

    CVE-2023-20573 allows a privileged attacker to prevent expected debug information from being delivered to SEV-SNP guests.

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