CVE-2021-46755 (GCVE-0-2021-46755)
Vulnerability from cvelistv5 – Published: 2023-05-09 19:00 – Updated: 2025-01-28 15:39
VLAI
EPSS
VEX
Summary
Failure to unmap certain SysHub mappings in
error paths of the ASP (AMD Secure Processor) bootloader may allow an attacker
with a malicious bootloader to exhaust the SysHub resources resulting in a
potential 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 15:39 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.amd.com/en/corporate/product-security… | vendor-advisory |
Impacted products
9 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| AMD | Ryzen™ 3000 Series Desktop Processors “Matisse” AM4 |
Affected:
various
|
guessed | |
| AMD | AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4 |
Affected:
various
|
guessed | |
| AMD | Ryzen™ 5000 Series Desktop processor with Radeon™ Graphics “Cezanne” AM4 |
Affected:
various
|
guessed | |
| AMD | 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT |
Affected:
various
|
guessed | |
| AMD | Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS |
Affected:
various
|
guessed | |
| AMD | Ryzen™ Threadripper™ PRO Processors “Chagall” WS |
Affected:
various
|
guessed | |
| AMD | Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics “Renoir” |
Affected:
various
|
guessed | |
| AMD | Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Lucienne” |
Affected:
various
|
guessed | |
| AMD | Ryzen™ 5000 Series Mobile processors with Radeon™ Graphics “Cezanne” |
Affected:
various
|
guessed |
Date Public
2023-05-09 16:30
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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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