CVE-2021-26406 (GCVE-0-2021-26406)
Vulnerability from cvelistv5 – Published: 2023-05-09 18:59 – Updated: 2025-01-28 15:44
VLAI
EPSS
VEX
Summary
Insufficient validation in parsing Owner's
Certificate Authority (OCA) certificates in SEV (AMD Secure Encrypted Virtualization)
and SEV-ES user application can lead to a host crash potentially resulting in
denial of service.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-28 15:44 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.amd.com/en/corporate/product-security… | vendor-advisory |
| https://www.amd.com/en/corporate/product-security… | vendor-advisory |
Impacted products
13 products
Date Public
2023-05-09 16:30
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"versions": [
{
"status": "affected",
"version": "various "
}
]
},
{
"defaultStatus": "unaffected",
"packageName": "AGESA",
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"x86"
],
"product": "AMD Ryzen\u2122 5000 Series Desktop Processors \u201cVermeer\u201d AM4",
"vendor": "AMD",
"versions": [
{
"status": "affected",
"version": "various "
}
]
},
{
"defaultStatus": "unaffected",
"packageName": "AGESA",
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],
"product": "2nd Gen AMD Ryzen\u2122 Threadripper\u2122 Processors \u201cColfax\u201d",
"vendor": "AMD",
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{
"status": "affected",
"version": "various "
}
]
},
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"product": "3rd Gen AMD Ryzen\u2122 Threadripper\u2122 Processors \u201cCastle Peak\u201d HEDT",
"vendor": "AMD",
"versions": [
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"status": "affected",
"version": "various"
}
]
},
{
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],
"product": "Ryzen\u2122 Threadripper\u2122 PRO Processors \u201cCastle Peak\u201d WS",
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"version": "various "
}
]
},
{
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"platforms": [
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],
"product": "Athlon\u2122 3000 Series Mobile Processors with Radeon\u2122 Graphics \u201cDali\u201d/\u201dDali\u201d ULP",
"vendor": "AMD",
"versions": [
{
"status": "affected",
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},
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},
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"product": "Ryzen\u2122 2000 Series Mobile Processors \u201cRaven Ridge\u201d FP5",
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"status": "affected",
"version": "various "
}
]
},
{
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"platforms": [
"x86"
],
"product": "Ryzen\u2122 3000 Series Mobile processor, 2nd Gen AMD Ryzen\u2122 Mobile Processors with Radeon\u2122 Graphics \u201cPicasso\u201d",
"vendor": "AMD",
"versions": [
{
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},
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},
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}
],
"datePublic": "2023-05-09T16:30:00.000Z",
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"value": "Insufficient validation in parsing Owner\u0027s\nCertificate Authority (OCA) certificates in SEV (AMD Secure Encrypted Virtualization)\nand SEV-ES user application can lead to a host crash potentially resulting in\ndenial of service.\n\n\n\n\u003cbr\u003e"
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"value": "Insufficient validation in parsing Owner\u0027s\nCertificate Authority (OCA) certificates in SEV (AMD Secure Encrypted Virtualization)\nand SEV-ES user application can lead to a host crash potentially resulting in\ndenial of service.\n\n\n\n\n"
}
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"dateUpdated": "2023-05-09T18:59:29.119Z",
"orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
"shortName": "AMD"
},
"references": [
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"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001"
},
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"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001"
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],
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"discovery": "UNKNOWN"
},
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"cveId": "CVE-2021-26406",
"datePublished": "2023-05-09T18:59:29.119Z",
"dateReserved": "2021-01-29T21:24:26.170Z",
"dateUpdated": "2025-01-28T15:44:16.511Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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