CVE-2023-32732

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Source
https://cve.org/CVERecord?id=CVE-2023-32732
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-32732.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-32732
Aliases
Downstream
Related
Published
2023-06-09T10:48:15.075Z
Modified
2026-07-09T11:24:11.570483Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Denial-of-Service in gRPC
Details

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

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/32xxx/CVE-2023-32732.json",
    "cna_assigner": "Google",
    "cwe_ids": [
        "CWE-440"
    ]
}
References

Affected packages

Git / github.com/grpc/grpc

Affected ranges

Type
GIT
Repo
https://github.com/grpc/grpc
Events
Introduced
358bfb581feeda5bf17dd3b96da1074d84a6ef8d
Fixed
6847e05dbb8088a918f06e2231a405942b5c002d
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "1.53"
        },
        {
            "fixed": "1.54"
        },
        {
            "introduced": "0"
        },
        {
            "fixed": "1.53.0"
        }
    ]
}
Type
GIT
Repo
https://github.com/grpc/grpc-go
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
357d7afc43fe0df74205b797525818fca8cd8f53
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.53.0"
        }
    ]
}
Type
GIT
Repo
https://github.com/grpc/grpc-java
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4ca6de0e8e52386301890b2860fb7a9a7c2c9b7c
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.53.0"
        }
    ]
}

Affected versions

cmd/protoc-gen-go-grpc/v1.*
cmd/protoc-gen-go-grpc/v1.0.0
cmd/protoc-gen-go-grpc/v1.0.1
cmd/protoc-gen-go-grpc/v1.1.0
cmd/protoc-gen-go-grpc/v1.2.0
v1.*
v1.0.0
v1.0.1-GA
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.2.0
v1.27.0-pre
v1.28.0-pre
v1.29.0-dev
v1.30.0-dev
v1.30.0-dev.1
v1.31.0-dev
v1.32.0-dev
v1.33.0-dev
v1.34.0-dev
v1.35.0-dev
v1.36.0-dev
v1.37.0-dev
v1.38.0-dev
v1.39.0-dev
v1.40.0-dev
v1.41.0-dev
v1.42.0-dev
v1.43.0-dev
v1.44.0-dev
v1.45.0-dev
v1.46.0-dev
v1.47.0-dev
v1.48.0-dev
v1.49.0-dev
v1.50.0-dev
v1.51.0-dev
v1.52.0-dev

Database specific

vanir_signatures_modified 
"2026-07-09T11:24:11Z"
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-32732.json"
vanir_signatures 
[
    {
        "id": "CVE-2023-32732-c5f45506",
        "digest": {
            "line_hashes": [
                "153505462668301892070772696189317306250",
                "40520222390141456988000868829229775555",
                "78570411478650308013931737040086710778",
                "60539704661294299732272537641085493035"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/grpc/grpc-java/commit/4ca6de0e8e52386301890b2860fb7a9a7c2c9b7c",
        "deprecated": false,
        "target": {
            "file": "core/src/main/java/io/grpc/internal/GrpcUtil.java"
        }
    }
]