FKIE_CVE-2021-3177
Vulnerability from fkie_nvd - Published: 2021-01-19 06:15 - Updated: 2026-06-17 04:04
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/
Summary
Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| python | python | * | |
| python | python | * | |
| python | python | * | |
| python | python | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| netapp | active_iq_unified_manager | - | |
| netapp | active_iq_unified_manager | - | |
| netapp | ontap_select_deploy_administration_utility | - | |
| debian | debian_linux | 9.0 | |
| oracle | communications_cloud_native_core_network_function_cloud_native_environment | 22.2.0 | |
| oracle | communications_offline_mediation_controller | 12.0.0.3.0 | |
| oracle | communications_pricing_design_center | 12.0.0.3.0 | |
| oracle | enterprise_manager_ops_center | 12.4.0.0 | |
| oracle | zfs_storage_appliance_kit | 8.8 |
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"value": "Python versiones 3.x hasta 3.9.1, presenta un desbordamiento de b\u00fafer en la funci\u00f3n PyCArg_repr en el archivo _ctypes/callproc.c, que puede conllevar a una ejecuci\u00f3n de c\u00f3digo remota en determinadas aplicaciones de Python que aceptan n\u00fameros de punto flotante como entrada no confiable, como es demostrado por un argumento 1e300 para c_double.from_param.\u0026#xa0;Esto ocurre porque sprintf es usado de manera no segura"
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"lastModified": "2026-06-17T04:04:47.457",
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-120"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-120"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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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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