FKIE_CVE-2023-32732
Vulnerability from fkie_nvd - Published: 2023-06-09 11:15 - Updated: 2026-06-17 05:59
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3 (Medium) - CVSS:3.1/
Summary
gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| grpc | grpc | * | |
| fedoraproject | fedora | 37 | |
| fedoraproject | fedora | 38 |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "gRPC",
"vendor": "Google",
"versions": [
{
"lessThan": "1.54",
"status": "affected",
"version": "1.53",
"versionType": "custom"
}
]
}
],
"source": "cve-coordination@google.com"
},
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "grpc",
"vendor": "grpc",
"versions": [
{
"lessThan": "1.54",
"status": "affected",
"version": "1.53",
"versionType": "custom"
}
]
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"configurations": [
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"matchCriteriaId": "97BFBCEF-3DA4-4DD4-881F-5F3940614E30",
"versionEndExcluding": "1.53.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*",
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},
{
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in\u00a0 https://github.com/grpc/grpc/pull/32309 https://www.google.com/url"
},
{
"lang": "es",
"value": "gRPC contiene una vulnerabilidad por la que un cliente puede provocar la finalizaci\u00f3n de la conexi\u00f3n entre un proxy HTTP2 y un servidor gRPC. Un error de codificaci\u00f3n en base64 para cabeceras con sufijo \"-bin\" provocar\u00e1 la desconexi\u00f3n por parte del servidor gRPC, pero suele estar permitido por los proxies HTTP2. Se recomienda actualizar m\u00e1s all\u00e1 del commit \"https://github.com/grpc/grpc/pull/32309\"."
}
],
"id": "CVE-2023-32732",
"lastModified": "2026-06-17T05:59:28.440",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
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"impactScore": 1.4,
"source": "cve-coordination@google.com",
"type": "Secondary"
},
{
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"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-32732",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-26T18:59:27.982940Z",
"version": "2.0.3"
}
}
]
},
"published": "2023-06-09T11:15:09.377",
"references": [
{
"source": "cve-coordination@google.com",
"tags": [
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"Patch"
],
"url": "https://github.com/grpc/grpc/pull/32309"
},
{
"source": "cve-coordination@google.com",
"tags": [
"Mailing List"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/37IDNVY5AWVH7JDMM2SDTL24ZPPZJNSY/"
},
{
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},
{
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},
{
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"tags": [
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}
],
"sourceIdentifier": "cve-coordination@google.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-440"
}
],
"source": "cve-coordination@google.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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