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AMD Client Vulnerabilities – November 2023

Bulletin ID: AMD-SB-4002
Potential Impact: Varies by CVE, see descriptions below
Severity: Varies by CVE, see descriptions below

Summary

Potential vulnerabilities in AMD Secure Processor (ASP), AMD System Management Unit (SMU), and other platform components were reported, and mitigations are being provided in Platform Initialization (PI) firmware software packages.

CVE Details

Refer to Glossary for explanation of terms

CVE

Severity

CVE Description

CVE-2022-23820

High

Failure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to arbitrary code execution.
CVE-2022-23821

High

Improper access control in System Management Mode (SMM) may allow an attacker to write to SPI ROM potentially leading to arbitrary code execution.

CVE-2023-20563

High

Insufficient protections in System Management Mode (SMM) code may allow an attacker to potentially enable escalation of privilege via local access.

CVE-2023-20565

High

Insufficient protections in System Management Mode (SMM) code may allow an attacker to potentially enable escalation of privilege via local access.

CVE-2021-46774

Medium

Insufficient input validation in ABL may enable a privileged attacker to perform arbitrary DRAM writes, potentially resulting in code execution and privilege escalation.

CVE-2023-20533

Medium

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker using DMA to read/write from/to invalid DRAM address potentially resulting in denial-of-service.

CVE-2023-20571

Medium

A race condition in System Management Mode (SMM) code may allow an attacker using a compromised user space to leverage CVE-2018-8897 potentially resulting in privilege escalation.
CVE-2021-46758

Low

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of availability and integrity.

CVE-2021-46766

Low

Improper clearing of sensitive data in the ASP Bootloader may expose secret keys to a privileged attacker accessing ASP SRAM, potentially leading to a loss of confidentiality.
CVE-2023-20521

Low

TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.

CVE-2023-20526

Low

Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memory potentially leading to a loss of confidentiality.

Affected Products and Mitigation

The Platform Initialization (PI) firmware versions listed below have been released to the Original Equipment Manufacturers (OEM) to mitigate these issues. Please refer to your OEM for the BIOS update specific to your product.

Desktop

CVE

AMD Ryzen™ 3000 Series Desktop Processors
“Matisse”

AMD Ryzen™ 5000 Series Desktop Processors
“Vermeer”

AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics
“Cezanne”

 AMD Ryzen™ 7000 Series Desktop Processors “Raphael” XD3 AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso” AM4

Minimum version to mitigate all listed CVEs

 ComboAM4 V1 PI 1.0.0.A
ComboAM4 V2 PI 1.2.0.9
(2023-03-17)		 ComboAM4V2 PI 1.2.0.9
(2023-01-24)		 ComboAM4V2 1.2.0.B
(2023-08-25)		 ComboAM5 1.0.7.0
(2023-04-18)		 ComboAM4PI 1.0.0.9
ComboAM4v2 PI 1.2.0.8
(2022-07-29)

CVE-2021-46758

Not affected

Not affected

 ComboAM4v2 PI 1.2.0.8
(2022-07-29)		 ComboAM5 1.0.0.1
(2022-06-30)

Not affected

CVE-2021-46766

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2021-46774

 ComboAM4 V2 PI 1.2.0.6
ComboAM4PI 1.0.0.8
(2022-02-28)

ComboAM4 V2 PI 1.2.0.6
(2022-01-07)

Not affected

Not affected

Not affected

CVE-2022-23820

 ComboAM4PI 1.0.0.9
ComboAM4v2 PI 1.2.0.8
(2022-07-29)

ComboAM4 V2 PI 1.2.0.8
(2022-07-29)

ComboAM4v2 PI 1.2.0.8
(2022-07-29)

Not affected

ComboAM4PI 1.0.0.9 ComboAM4v2 PI 1.2.0.8
(2022-07-29)

CVE-2022-23821

 ComboAM4PI 1.0.0.9
ComboAM4v2 PI 1.2.0.8
(2022-07-29)

ComboAM4 V2 PI 1.2.0.8
(2022-07-29)

ComboAM4v2 PI 1.2.0.8
(2022-07-29)

Not affected

ComboAM4PI 1.0.0.9 ComboAM4v2 PI 1.2.0.8
(2022-07-29)

CVE-2023-20521

Not affected

Not affected

Not affected

Not affected

ComboAM4PI 1.0.0.9 ComboAM4v2 PI 1.2.0.8
(2022-07-27)

CVE-2023-20526

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2023-20533

 ComboAM4 V1 PI 1.0.0.A
ComboAM4 V2 PI 1.2.0.9
(2023-03-17)		 ComboAM4V2 PI 1.2.0.9
(2023-01-24)

Not affected

Not affected

Not affected

CVE-2023-205631

Not affected

Not affected

 ComboAM4V2 1.2.0.B
*(2023-08-25)		 ComboAM5 1.0.7.0
(2023-04-18)

Not affected

CVE-2023-205651

Not affected

Not affected

 ComboAM4V2 1.2.0.B
*(2023-08-25)		 ComboAM5 1.0.7.0
(2023-04-18)

Not affected

CVE-2023-205711

Not affected

Not affected

 ComboAM4V2 1.2.0.B
*(2023-08-25)		 ComboAM5 1.0.7.0
(2023-04-18)

Not affected

High End Desktop (HEDT)

CVE

 AMD Ryzen™ Threadripper™ 2000 Series Processors
“Colfax”

AMD Ryzen™ Threadripper™ 3000 Series Processors
“Castle Peak” HEDT

Minimum version to mitigate all listed CVEs

 SummitPI-SP3r2 1.1.0.7
(2023-03-29)		 CastlePeakPI-SP3r3 1.0.0.8
(2022-11-30)

CVE-2021-46758

Not affected

Not affected

CVE-2021-46766

Not affected

Not affected

CVE-2021-46774

Not affected

 CastlePeakPI-SP3r3 1.0.0.7
(2022-01-28)

CVE-2022-23820

 SummitPI-SP3r2 1.1.0.6
(2022-09-26)		 CastlePeakPI-SP3r3 1.0.0.8
(2022-11-30)

CVE-2022-23821

 SummitPI-SP3r2 1.1.0.6
(2022-09-26)		 CastlePeakPI-SP3r3 1.0.0.8
(2022-11-30)

CVE-2023-20521

 SummitPI-SP3r2 1.1.0.6
(2022-09-26)

Not affected

CVE-2023-20526

 SummitPI-SP3r2 1.1.0.7
(2023-03-29)

Not affected

CVE-2023-20533

Not affected

 CastlePeakPI-SP3r3 1.0.0.8
(2022-11-30)

CVE-2023-20563

Not affected

Not affected

CVE-2023-20565

Not affected

Not affected
CVE-2023-20571

Not affected

Not affected

Workstation

CVE

AMD Ryzen™ Threadripper™ PRO Processors
“Castle Peak” WS SP3

 AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors “Chagall” WS

Minimum version to mitigate all listed CVEs

 CastlePeakWSPI-sWRX8 1.0.0.A
ChagallWSPI 1.0.0.3
(2022-11-23)		 ChagallWSPI-sWRX8 1.0.0.5
(2022-09-29)

CVE-2021-46758

Not affected

Not affected

CVE-2021-46766

Not affected

 ChagallWSPI-sWRX8 1.0.0.5
(2022-09-29)

CVE-2021-46774

 CastlePeakWSPI-sWRX8 1.0.0.9
ChagallWSPI-sWRX8 1.0.0.0
(2022-01-20)		 ChagallWSPI-sWRX8 1.0.0.0
(2021-10-13)

CVE-2022-23820

 CastlePeakWSPI-sWRX8 1.0.0.A
ChagallWSPI 1.0.0.3
(2022-11-23)		 ChagallWSPI 1.0.0.3
(2022-03-31)

CVE-2022-23821

 CastlePeakWSPI-sWRX8 1.0.0.A
ChagallWSPI 1.0.0.3
(2022-11-23)		 ChagallWSPI 1.0.0.3
(2022-03-31)

CVE-2023-20521

Not affected

Not affected

CVE-2023-20526

Not affected

Not affected

CVE-2023-20533

 ChagallWSPI-sWRX8 1.0.0.5
CastlePeakWSPI-sWRX8 1.0.0.A
(2022-11-23)		 ChagallWSPI-sWRX8 1.0.0.5
(2022-09-29)

CVE-2023-20563

Not affected

Not affected

CVE-2023-20565

Not affected

Not affected

CVE-2023-20571

Not affected

Not affected

Mobile - AMD Athlon™ Series Processors

CVE

AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
“Dali”/”Dali” FP5

AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
“Pollock”

Minimum version to mitigate all listed CVEs

 PicassoPI-FP5 1.0.0.E
(2022-07-06)		 PollockPI-FT5 1.0.0.4
(2022-06-29)

CVE-2021-46758

Not affected

Not affected

CVE-2021-46766

Not affected

Not affected

CVE-2021-46774

Not affected

Not affected

CVE-2022-23820

Not affected

 PollockPI-FT5 1.0.0.5
(2022-06-22)

CVE-2022-23821

 PicassoPI-FP5 1.0.0.E
(2022-07-06)		 PollockPI-FT5 1.0.0.5
(2022-06-22)

CVE-2023-20521

 PicassoPI-FP5 1.0.0.E
(2022-07-06)		 PollockPI-FT5 1.0.0.4
(2022-06-29)

CVE-2023-20526

Not affected

Not affected

CVE-2023-20533

Not affected

Not affected

CVE-2023-20563

Not affected

Not affected

CVE-2023-20565

Not affected

Not affected

CVE-2023-20571

Not affected

Not affected

Mobile - AMD Ryzen™ Series Processors

CVE

AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics “Picasso” FP5

AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics
“Renoir” FP6

AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
“Lucienne”

AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
“Cezanne”

 AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics “Mendocino” FT6

Minimum version to mitigate all listed CVEs

 PicassoPI-FP5 1.0.0.E
(2022-07-29)

RenoirPI-FP6 1.0.0.A ComboAM4v2 PI 1.2.0.8
(2022-08-10)

CezannePI-FP6 1.0.0.C
(2022-08-06)

 CezannePI-FP6 1.0.0.F
(2023-06-20)

N/A

CVE-2021-46758

Not affected

RenoirPI-FP6 1.0.0.A ComboAM4v2 PI 1.2.0.8
(2022-08-10)

CezannePI-FP6 1.0.0.C
(2022-08-06)

CezannePI-FP6 1.0.0.C
(2022-08-10)

Not affected

CVE-2021-46766

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2021-46774

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2022-23820

 PicassoPI-FP5 1.0.0.E
(2022-07-29)		 RenoirPI-FP6 1.0.0.9
ComboAM4v2 PI 1.2.0.8
(2022-07-29)

CezannePI-FP6 1.0.0.B
(2022-06-15)

 CezannePI-FP6 1.0.0.B
(2022-07-29)

Not affected

CVE-2022-23821

 PicassoPI-FP5 1.0.0.E
(2022-07-29)		 RenoirPI-FP6 1.0.0.9
ComboAM4v2 PI 1.2.0.8
(2022-07-29)

CezannePI-FP6 1.0.0.B
(2022-06-15)

 CezannePI-FP6 1.0.0.B
(2022-07-29)

Not affected

CVE-2023-20521

 PicassoPI-FP5 1.0.0.E
(2022-07-27)

Not affected

Not affected

Not affected

Not affected

CVE-2023-20526

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2023-20533

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2023-20563

Not affected

Not affected

Not affected

 CezannePI-FP6 1.0.0.F
(2023-06-20)

Not affected

CVE-2023-20565

Not affected

Not affected

Not affected

 CezannePI-FP6 1.0.0.F
(2023-06-20)

Not affected

CVE-2023-20571

Not affected

Not affected

Not affected

 CezannePI-FP6 1.0.0.F
(2023-06-20)

Not affected

CVE

 AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics
"Rembrandt"		 AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics “Rembrandt-R”

AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics
“Barcelo”

AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics
“Barcelo-R”

 AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics
“Phoenix” FP7/FP7r2/FP8		 AMD Ryzen™ 7045 Series Mobile Processors “Dragon Range”

Minimum version to mitigate all listed CVEs

 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 CezannePI-FP6 1.0.0.F
(2023-06-20)		 CezannePI-FP6 1.0.0.F
(2023-06-21)		 PhoenixPI-FP8-FP7 PI 1.0.0.1g
(2023-05-11)

N/A

CVE-2021-46758

 RembrandtPI-FP7 1.0.0.5
(2022-05-25)		 RembrandtPI-FP7 1.0.0.5
(2022-05-25)

CezannePI-FP6 1.0.0.C
(2022-08-06)

CezannePI-FP6 1.0.0.C
(2022-08-06)

Not affected

Not affected

CVE-2021-46766

Not affected

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2021-46774

Not affected

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2022-23820

 RembrandtPI-FP7 1.0.0.2
(2022-02-23)		 RembrandtPI-FP7 1.0.0.2
(2022-02-23)

CezannePI-FP6 1.0.0.B
(2022-06-15)

CezannePI-FP6 1.0.0.B
(2022-06-15)

Not affected

Not affected

CVE-2022-23821

 RembrandtPI-FP7 1.0.0.2
(2022-02-23)		 RembrandtPI-FP7 1.0.0.2
(2022-02-23)

CezannePI-FP6 1.0.0.B
(2022-06-15)

CezannePI-FP6 1.0.0.B
(2022-06-15)

Not affected

Not affected

CVE-2023-20521

Not affected

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2023-20526

Not affected

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2023-20533

Not affected

Not affected

Not affected

Not affected

Not affected

Not affected

CVE-2023-20563

 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 CezannePI-FP6 1.0.0.F
(2023-06-20)		 CezannePI-FP6 1.0.0.F
(2023-06-20)		 PhoenixPI-FP8-FP7 PI 1.0.0.1g
(2023-05-11)

Not affected

CVE-2023-20565

 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 CezannePI-FP6 1.0.0.F
(2023-06-20)		 CezannePI-FP6 1.0.0.F
(2023-06-20)		 PhoenixPI-FP8-FP7 PI 1.0.0.1g
(2023-05-11)

Not affected

CVE-2023-20571

 

 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 RembrandtPI-FP7 1.0.0.9
(2023-05-16)		 CezannePI-FP6 1.0.0.F
(2023-06-20)		 CezannePI-FP6 1.0.0.F
(2023-06-20)		 PhoenixPI-FP8-FP7 PI 1.0.0.1g
(2023-05-11)

Not affected

Acknowledgement

AMD thanks the following for reporting these issues and engaging in coordinated vulnerability disclosure:

Reported by AMI: CVE-2022-23820, CVE-2022-23821

Reported by Andrew Cooper of Citrix: CVE-2023-20565, CVE-2023-20563, CVE-2023-20571

Internally found: CVE-2023-20533, CVE-2023-20521, CVE-2021-46774, CVE-2021-46758, CVE-2023-20526, CVE-2021-46766

Revisions

Revision Date Description
2023-11-14 Initial publication 

 

DISCLAIMER

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Footnotes
  1. Only Impacts affected programs which implement Secure Core PC (SCPC)- applies to all instances throughout this notice.