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Amd.comAMD-SB-4002

HistoryNov 14, 2023 - 12:00 a.m.

AMD Client Vulnerabilities – November 2023

2023-11-1400:00:00

amd.com

www.amd.com

amd

client vulnerabilities

platform initialization

amd ryzen

system management mode

security

bios update

oem

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8.7 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.013 Low

EPSS

Percentile

85.8%

JSON

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

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

Not affected

CVE-2021-46766

Not affected

CVE-2021-46774

| ComboAM4 V2 PI 1.2.0.6
ComboAM4PI1.0.0.8
(2022-02-28)|

ComboAM4 V2 PI 1.2.0.6
(2022-01-07)

Not affected

CVE-2022-23820

| ComboAM4PI 1.0.0.9
ComboAM4v2 PI1.2.0.8
(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 PI1.2.0.8
(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

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

CVE-2023-20526

Not affected

CVE-2023-20533

| ComboAM4 V1 PI 1.0.0.A
ComboAM4 V2 PI1.2.0.9
(2023-03-17)| ComboAM4V2 PI 1.2.0.9
(2023-01-24)|

Not affected

CVE-2023-205631

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

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

Not affected

CVE-2023-205711

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

CVE-2021-46766

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

CVE-2023-20565

Not affected

CVE-2023-20571|

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
ChagallWSPI1.0.0.3
(2022-11-23)| ChagallWSPI-sWRX8 1.0.0.5
(2022-09-29)

CVE-2021-46758

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-sWRX81.0.0.0
(2022-01-20)| ChagallWSPI-sWRX8 1.0.0.0
(2021-10-13)

CVE-2022-23820

| CastlePeakWSPI-sWRX8 1.0.0.A
ChagallWSPI1.0.0.3
(2022-11-23)| ChagallWSPI 1.0.0.3
(2022-03-31)

CVE-2022-23821

| CastlePeakWSPI-sWRX8 1.0.0.A
ChagallWSPI1.0.0.3
(2022-11-23)| ChagallWSPI 1.0.0.3
(2022-03-31)

CVE-2023-20521

Not affected

CVE-2023-20526

Not affected

CVE-2023-20533

| ChagallWSPI-sWRX8 1.0.0.5
CastlePeakWSPI-sWRX81.0.0.A
(2022-11-23)| ChagallWSPI-sWRX8 1.0.0.5
(2022-09-29)

CVE-2023-20563

Not affected

CVE-2023-20565

Not affected

CVE-2023-20571

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

CVE-2021-46766

Not affected

CVE-2021-46774

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

CVE-2023-20533

Not affected

CVE-2023-20563

Not affected

CVE-2023-20565

Not affected

CVE-2023-20571

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

CVE-2021-46774

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

CVE-2023-20526

Not affected

CVE-2023-20533

Not affected

CVE-2023-20563

Not affected

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

Not affected

CVE-2023-20565

Not affected

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

Not affected

CVE-2023-20571

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

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)

Not affected

CVE-2021-46766

Not affected

CVE-2021-46774

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)

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)

Not affected

CVE-2023-20521

Not affected

CVE-2023-20526

Not affected

CVE-2023-20533

Not affected

CVE-2023-20563

Not affected

CVE-2023-20565

Not affected

CVE-2023-20571

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

The information contained herein is for informational purposes only and is subject to change without notice. While every precaution has been taken in the preparation of this document, it may contain technical inaccuracies, omissions and typographical errors, and AMD is under no obligation to update or otherwise correct this information. Advanced Micro Devices, Inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this document, and assumes no liability of any kind, including the implied warranties of noninfringement, merchantability or fitness for particular purposes, with respect to the operation or use of AMD hardware, software or other products described herein. Any computer system has risks of security vulnerabilities that cannot be completely prevented or mitigated. No license, including implied or arising by estoppel, to any intellectual property rights is granted by this document. Terms and limitations applicable to the purchase or use of AMD’s products are as set forth in a signed agreement between the parties or in AMD’s Standard Terms and Conditions of Sale.

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