AMD RyzenTM Embedded V3000 SMM buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in AMD EPYC 7001 Processors, EPYC 7002 Processors, EPYC 7003 Processors, EPYC 9004 Processors, Ryzen 7000 Desktop Processors, Ryzen Threadripper PRO 5000WX Processors, Ryzen 7020 Processors with Radeon Graphics, Ryzen 6000 Processors with Radeon Graphics, Ryzen 7035 Processors with Radeon Graphics, EPYC Embedded 3000, EPYC Embedded 7002, EPYC Embedded 7003, EPYC Embedded 9003, Ryzen Embedded 7000 and RyzenTM Embedded V3000. It has been classified as critical. The impacted element is an unknown function of the component SMM. The manipulation leads to buffer overflow. This vulnerability is documented as CVE-2023-20578. The attack needs to be performed locally. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in AMD EPYC 7001 Processors, EPYC 7002 Processors, EPYC 7003 Processors, EPYC 9004 Processors, Ryzen 7000 Desktop Processors, Ryzen Threadripper PRO 5000WX Processors, Ryzen 7020 Processors with Radeon Graphics, Ryzen 6000 Processors with Radeon Graphics, Ryzen 7035 Processors with Radeon Graphics, EPYC Embedded 3000, EPYC Embedded 7002, EPYC Embedded 7003, EPYC Embedded 9003, Ryzen Embedded 7000 and RyzenTM Embedded V3000. It has been rated as critical. This issue affects an unknown code block of the component SMM. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.

It is possible to read the advisory at amd.com. The identification of this vulnerability is CVE-2023-20578 since 10/27/2022. The exploitation is known to be difficult. Attacking locally is a requirement. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

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Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.4
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.4
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (AMD): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2022 🔍
08/13/2024 +656 days 🔍
08/13/2024 +0 days 🔍
10/02/2024 +50 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2023-20578 (🔍)
GCVE (CVE): GCVE-0-2023-20578
GCVE (VulDB): GCVE-100-274391

Entryinfo

Created: 08/13/2024 19:15
Updated: 10/02/2024 19:51
Changes: 08/13/2024 19:15 (62), 10/02/2024 19:51 (12)
Complete: 🔍
Cache ID: 216::103

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