AMD EPYC SNP Firmware input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in AMD EPYC. Affected is an unknown function of the component SNP Firmware Handler. The manipulation leads to input validation. This vulnerability is referenced as CVE-2021-26327. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in AMD EPYC (affected version unknown) and classified as problematic. This issue affects an unknown functionality of the component SNP Firmware Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality.

The weakness was published 11/18/2021. The advisory is shared at amd.com. The identification of this vulnerability is CVE-2021-26327 since 01/29/2021. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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

01/29/2021 🔍
11/18/2021 +293 days 🔍
11/18/2021 +0 days 🔍
11/21/2021 +3 days 🔍

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2021-26327 (🔍)
GCVE (CVE): GCVE-0-2021-26327
GCVE (VulDB): GCVE-100-186845

Entryinfo

Created: 11/18/2021 07:29
Updated: 11/21/2021 12:16
Changes: 11/18/2021 07:29 (36), 11/21/2021 12:08 (1), 11/21/2021 12:16 (18)
Complete: 🔍
Cache ID: 216::103

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