CVE-2021-26403: Medium severity amd epyc server firmware vulnerability

Published Jan 10, 2023
·
Updated

Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality.

Affected Software

164 affected components
AMD Epyc 7001 Firmware<naplespi_1.0.0.e
AMD Epyc 7001
AMD Epyc 7251 Firmware<naplespi_1.0.0.e
AMD Epyc 7251
AMD Epyc 7261 Firmware<naplespi_1.0.0.e
AMD Epyc 7261
AMD Epyc 7281 Firmware<naplespi_1.0.0.e
AMD Epyc 7281
AMD Epyc 7301 Firmware<naplespi_1.0.0.e
AMD Epyc 7301
AMD Epyc 7351 Firmware<naplespi_1.0.0.e
AMD Epyc 7351
AMD Epyc 7351p Firmware<naplespi_1.0.0.e
AMD Epyc 7351p
AMD Epyc 7371 Firmware<naplespi_1.0.0.e
AMD Epyc 7371
AMD Epyc 7401 Firmware<naplespi_1.0.0.e
AMD Epyc 7401
AMD Epyc 7401p Firmware<naplespi_1.0.0.e
AMD Epyc 7401p
AMD Epyc 7451 Firmware<naplespi_1.0.0.e
AMD Epyc 7451
AMD Epyc 7501 Firmware<naplespi_1.0.0.e
AMD Epyc 7501
AMD Epyc 7551 Firmware<naplespi_1.0.0.e
AMD Epyc 7551
AMD Epyc 7551p Firmware<naplespi_1.0.0.e
AMD Epyc 7551p
AMD Epyc 7601 Firmware<naplespi_1.0.0.e
AMD Epyc 7601
AMD Epyc 7002 Firmware<romepi_1.0.0.9
AMD Epyc 7002
AMD Epyc 7232p Firmware<romepi_1.0.0.9
AMD Epyc 7232p
AMD Epyc 7252 Firmware<romepi_1.0.0.9
AMD Epyc 7252
AMD Epyc 7262 Firmware<romepi_1.0.0.9
AMD Epyc 7262
AMD Epyc 7272 Firmware<romepi_1.0.0.9
AMD Epyc 7272
AMD Epyc 7282 Firmware<romepi_1.0.0.9
AMD Epyc 7282
AMD Epyc 7302 Firmware<romepi_1.0.0.9
AMD Epyc 7302
AMD Epyc 7302p Firmware<romepi_1.0.0.9
AMD Epyc 7302p
AMD Epyc 7352 Firmware<romepi_1.0.0.9
AMD Epyc 7352
AMD Epyc 7402 Firmware<romepi_1.0.0.9
AMD Epyc 7402
AMD Epyc 7402p Firmware<romepi_1.0.0.9
AMD Epyc 7402p
AMD Epyc 7452 Firmware<romepi_1.0.0.9
AMD Epyc 7452
AMD Epyc 7502 Firmware<romepi_1.0.0.9
AMD Epyc 7502
AMD Epyc 7502p Firmware<romepi_1.0.0.9
AMD Epyc 7502p
AMD Epyc 7532 Firmware<romepi_1.0.0.9
AMD Epyc 7532
AMD Epyc 7542 Firmware<romepi_1.0.0.9
AMD Epyc 7542
AMD Epyc 7552 Firmware<romepi_1.0.0.9
AMD Epyc 7552
AMD Epyc 7642 Firmware<romepi_1.0.0.9
AMD Epyc 7642
AMD Epyc 7662 Firmware<romepi_1.0.0.9
AMD Epyc 7662
AMD Epyc 7702 Firmware<romepi_1.0.0.9
AMD Epyc 7702
AMD Epyc 7702p Firmware<romepi_1.0.0.9
AMD Epyc 7702p
AMD Epyc 7742 Firmware<romepi_1.0.0.9
AMD Epyc 7742
AMD Epyc 7f32 Firmware<romepi_1.0.0.9
AMD Epyc 7f32
AMD Epyc 7f52 Firmware<romepi_1.0.0.9
AMD Epyc 7f52
AMD Epyc 7f72 Firmware<romepi_1.0.0.9
AMD Epyc 7f72
AMD Epyc 7h12 Firmware<romepi_1.0.0.9
AMD Epyc 7h12
All of the following
AMD Epyc 7001 Firmware<naplespi_1.0.0.e
AMD Epyc 7001
All of the following
AMD Epyc 7251 Firmware<naplespi_1.0.0.e
AMD Epyc 7251
All of the following
AMD Epyc 7261 Firmware<naplespi_1.0.0.e
AMD Epyc 7261
All of the following
AMD Epyc 7281 Firmware<naplespi_1.0.0.e
AMD Epyc 7281
All of the following
AMD Epyc 7301 Firmware<naplespi_1.0.0.e
AMD Epyc 7301
All of the following
AMD Epyc 7351 Firmware<naplespi_1.0.0.e
AMD Epyc 7351
All of the following
AMD Epyc 7351p Firmware<naplespi_1.0.0.e
AMD Epyc 7351p
All of the following
AMD Epyc 7371 Firmware<naplespi_1.0.0.e
AMD Epyc 7371
All of the following
AMD Epyc 7401 Firmware<naplespi_1.0.0.e
AMD Epyc 7401
All of the following
AMD Epyc 7401p Firmware<naplespi_1.0.0.e
AMD Epyc 7401p
All of the following
AMD Epyc 7451 Firmware<naplespi_1.0.0.e
AMD Epyc 7451
All of the following
AMD Epyc 7501 Firmware<naplespi_1.0.0.e
AMD Epyc 7501
All of the following
AMD Epyc 7551 Firmware<naplespi_1.0.0.e
AMD Epyc 7551
All of the following
AMD Epyc 7551p Firmware<naplespi_1.0.0.e
AMD Epyc 7551p
All of the following
AMD Epyc 7601 Firmware<naplespi_1.0.0.e
AMD Epyc 7601
All of the following
AMD Epyc 7002 Firmware<romepi_1.0.0.9
AMD Epyc 7002
All of the following
AMD Epyc 7232p Firmware<romepi_1.0.0.9
AMD Epyc 7232p
All of the following
AMD Epyc 7252 Firmware<romepi_1.0.0.9
AMD Epyc 7252
All of the following
AMD Epyc 7262 Firmware<romepi_1.0.0.9
AMD Epyc 7262
All of the following
AMD Epyc 7272 Firmware<romepi_1.0.0.9
AMD Epyc 7272
All of the following
AMD Epyc 7282 Firmware<romepi_1.0.0.9
AMD Epyc 7282
All of the following
AMD Epyc 7302 Firmware<romepi_1.0.0.9
AMD Epyc 7302
All of the following
AMD Epyc 7302p Firmware<romepi_1.0.0.9
AMD Epyc 7302p
All of the following
AMD Epyc 7352 Firmware<romepi_1.0.0.9
AMD Epyc 7352
All of the following
AMD Epyc 7402 Firmware<romepi_1.0.0.9
AMD Epyc 7402
All of the following
AMD Epyc 7402p Firmware<romepi_1.0.0.9
AMD Epyc 7402p
All of the following
AMD Epyc 7452 Firmware<romepi_1.0.0.9
AMD Epyc 7452
All of the following
AMD Epyc 7502 Firmware<romepi_1.0.0.9
AMD Epyc 7502
All of the following
AMD Epyc 7502p Firmware<romepi_1.0.0.9
AMD Epyc 7502p
All of the following
AMD Epyc 7532 Firmware<romepi_1.0.0.9
AMD Epyc 7532
All of the following
AMD Epyc 7542 Firmware<romepi_1.0.0.9
AMD Epyc 7542
All of the following
AMD Epyc 7552 Firmware<romepi_1.0.0.9
AMD Epyc 7552
All of the following
AMD Epyc 7642 Firmware<romepi_1.0.0.9
AMD Epyc 7642
All of the following
AMD Epyc 7662 Firmware<romepi_1.0.0.9
AMD Epyc 7662
All of the following
AMD Epyc 7702 Firmware<romepi_1.0.0.9
AMD Epyc 7702
All of the following
AMD Epyc 7702p Firmware<romepi_1.0.0.9
AMD Epyc 7702p
All of the following
AMD Epyc 7742 Firmware<romepi_1.0.0.9
AMD Epyc 7742
All of the following
AMD Epyc 7f32 Firmware<romepi_1.0.0.9
AMD Epyc 7f32
All of the following
AMD Epyc 7f52 Firmware<romepi_1.0.0.9
AMD Epyc 7f52
All of the following
AMD Epyc 7f72 Firmware<romepi_1.0.0.9
AMD Epyc 7f72
All of the following
AMD Epyc 7h12 Firmware<romepi_1.0.0.9
AMD Epyc 7h12

Event History

Jan 10, 2023
CVE Published
via MITRE·08:56 PM
Data Sourced
via MITRE·08:56 PM
Description
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Frequently Asked Questions

1

What is the severity of CVE-2021-26403?

CVE-2021-26403 has been assigned a medium severity rating due to the potential compromise of virtual machine confidentiality.

2

How do I fix CVE-2021-26403?

To mitigate CVE-2021-26403, update the affected firmware to the latest version available from AMD.

3

Which systems are affected by CVE-2021-26403?

CVE-2021-26403 affects various AMD EPYC 7001 and 7002 series firmware versions up to specific release versions.

4

What could happen if CVE-2021-26403 is exploited?

Exploitation of CVE-2021-26403 might allow a malicious hypervisor to disclose sensitive launch secrets, compromising the confidentiality of virtual machines.

5

Is there a known exploit for CVE-2021-26403?

As of now, there are no publicly known exploits for CVE-2021-26403, but the vulnerability remains a security risk.

Company

Resources

Contact

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