AMD Ryzen Embedded V3000 SMM insufficient granularity of access control

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in AMD EPYC 7003 Processors, EPYC 9004 Processors, Instinct MI300A, Ryzen 3000 Desktop Processors, Ryzen 5000 Desktop Processors, Ryzen 5000 Desktop Processor with Radeon Graphics, Ryzen 7000 Desktop Processors, Athlon 3000 Desktop Processors with Radeon Graphics, Ryzen 4000 Desktop Processor with Radeon Graphics, Ryzen 8000 Processor with Radeon Graphics, Ryzen Threadripper PRO 5000WX- Desktop Processors, Athlon 3000 Mobile Processors with Radeon Graphics, Ryzen 3000 Mobile Processor with Radeon Graphics, Ryzen 4000 Mobile Processors with Radeon Graphics, Ryzen 5000 Processors with Radeon Graphics, Ryzen 7020 Processors with Radeon Graphics, Ryzen 6000 Processor with Radeon Graphics, Ryzen 7035 Processor with Radeon Graphics, Ryzen 7040 Processors with Radeon Graphics, Ryzen 7000 Mobile Processors, EPYC Embedded 7003, EPYC Embedded 9004, Ryzen Embedded R1000, Ryzen Embedded R2000, Ryzen Embedded 5000, Ryzen Embedded 7000, Ryzen Embedded V2000 and Ryzen Embedded V3000 and classified as critical. The impacted element is an unknown function of the component SMM Handler. The manipulation leads to input validation. This vulnerability is referenced as CVE-2023-31343. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in AMD EPYC 7003 Processors, EPYC 9004 Processors, Instinct MI300A, Ryzen 3000 Desktop Processors, Ryzen 5000 Desktop Processors, Ryzen 5000 Desktop Processor with Radeon Graphics, Ryzen 7000 Desktop Processors, Athlon 3000 Desktop Processors with Radeon Graphics, Ryzen 4000 Desktop Processor with Radeon Graphics, Ryzen 8000 Processor with Radeon Graphics, Ryzen Threadripper PRO 5000WX- Desktop Processors, Athlon 3000 Mobile Processors with Radeon Graphics, Ryzen 3000 Mobile Processor with Radeon Graphics, Ryzen 4000 Mobile Processors with Radeon Graphics, Ryzen 5000 Processors with Radeon Graphics, Ryzen 7020 Processors with Radeon Graphics, Ryzen 6000 Processor with Radeon Graphics, Ryzen 7035 Processor with Radeon Graphics, Ryzen 7040 Processors with Radeon Graphics, Ryzen 7000 Mobile Processors, EPYC Embedded 7003, EPYC Embedded 9004, Ryzen Embedded R1000, Ryzen Embedded R2000, Ryzen Embedded 5000, Ryzen Embedded 7000, Ryzen Embedded V2000 and Ryzen Embedded V3000. This issue affects an unknown part of the component SMM Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-1220. The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution.

The advisory is shared at amd.com. The identification of this vulnerability is CVE-2023-31343 since 04/27/2023. The exploitation is known to be difficult. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-35654). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

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

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

CVSSv2info

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

Exploitinginfo

Class: Insufficient granularity of access control
CWE: CWE-1220 / CWE-284 / CWE-266
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

04/27/2023 🔍
02/12/2025 +657 days 🔍
02/12/2025 +0 days 🔍
09/24/2025 +224 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2023-31343 (🔍)
GCVE (CVE): GCVE-0-2023-31343
GCVE (VulDB): GCVE-100-295445
EUVD: 🔍

Entryinfo

Created: 02/12/2025 08:41
Updated: 09/24/2025 02:24
Changes: 02/12/2025 08:41 (61), 09/24/2025 00:38 (3), 09/24/2025 02:24 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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