AMD EPYC System Management Interface out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in AMD EPYC. It has been classified as problematic. This affects an unknown part of the component System Management Interface. The manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2021-46794. No exploit exists.

Detailsinfo

A vulnerability was found in AMD EPYC (unknown version). It has been rated as problematic. This issue affects an unknown code block of the component System Management Interface. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is integrity, and availability. The summary by CVE is:

Insufficient bounds checking in ASP (AMD Secure Processor) may allow for an out of bounds read in SMI (System Management Interface) mailbox checksum calculation triggering a data abort, resulting in a potential denial of service.

The weakness was disclosed 05/09/2023. It is possible to read the advisory at amd.com. The identification of this vulnerability is CVE-2021-46794 since 05/04/2022. The technical details are unknown and an exploit is not publicly available.

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 4.6
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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

05/04/2022 🔍
05/09/2023 +370 days 🔍
05/09/2023 +0 days 🔍
01/28/2025 +630 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2021-46794 (🔍)
GCVE (CVE): GCVE-0-2021-46794
GCVE (VulDB): GCVE-100-228527

Entryinfo

Created: 05/09/2023 23:46
Updated: 01/28/2025 18:11
Changes: 05/09/2023 23:46 (37), 06/01/2023 22:52 (11), 01/28/2025 18:11 (26)
Complete: 🔍
Cache ID: 216::103

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