FKIE_CVE-2020-8252
Vulnerability from fkie_nvd - Published: 2020-09-18 21:15 - Updated: 2026-06-17 03:26
Severity
Summary
The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.
References
{
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{
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{
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"versionType": "semver"
},
{
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"status": "affected",
"version": "9.0",
"versionType": "semver"
},
{
"lessThan": "10.22.1",
"status": "affected",
"version": "10.0",
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},
{
"lessThan": "11.*",
"status": "affected",
"version": "11.0",
"versionType": "semver"
},
{
"lessThan": "12.18.4",
"status": "affected",
"version": "12.0",
"versionType": "semver"
},
{
"lessThan": "13.*",
"status": "affected",
"version": "13.0",
"versionType": "semver"
},
{
"lessThan": "14.9.0",
"status": "affected",
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"versionType": "semver"
}
]
}
],
"source": "support@hackerone.com"
}
],
"configurations": [
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The implementation of realpath in libuv \u003c 10.22.1, \u003c 12.18.4, and \u003c 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes."
},
{
"lang": "es",
"value": "La implementaci\u00f3n de realpath en libuv versiones anteriores a versiones anteriores a 10.22.1, versiones anteriores a 12.18.4 y versiones anteriores a 14.9.0, usada dentro de Node.js determin\u00f3 incorrectamente el tama\u00f1o del b\u00fafer, lo que puede resultar en un desbordamiento del b\u00fafer si la ruta resuelta tiene m\u00e1s de 256 bytes"
}
],
"id": "CVE-2020-8252",
"lastModified": "2026-06-17T03:26:08.197",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.6,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"published": "2020-09-18T21:15:13.497",
"references": [
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},
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"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Modified",
"weaknesses": [
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"value": "CWE-120"
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"type": "Secondary"
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}
]
}
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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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