AMD Athlon/Ryzen/EPYC SMM Communication buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in AMD Athlon, Ryzen and EPYC. It has been declared as critical. Impacted is an unknown function of the component SMM Communication Handler. Executing a manipulation can lead to buffer overflow. This vulnerability is tracked as CVE-2022-23820. No exploit exists.

Detailsinfo

A vulnerability has been found in AMD Athlon, Ryzen and EPYC (version now known) and classified as critical. This vulnerability affects some unknown processing of the component SMM Communication Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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

The weakness was disclosed 11/14/2023. The advisory is shared for download at amd.com. This vulnerability was named CVE-2022-23820 since 01/21/2022. There are neither technical details nor an exploit publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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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: Yes

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/21/2022 🔍
11/14/2023 +662 days 🔍
11/14/2023 +0 days 🔍
06/18/2024 +217 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2022-23820 (🔍)
GCVE (CVE): GCVE-0-2022-23820
GCVE (VulDB): GCVE-100-245272

Entryinfo

Created: 11/14/2023 20:14
Updated: 06/18/2024 22:16
Changes: 11/14/2023 20:14 (37), 12/09/2023 09:57 (11), 06/18/2024 22:16 (24)
Complete: 🔍
Cache ID: 216::103

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