{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-39326",
        "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "state": "PUBLISHED",
        "assignerShortName": "Go",
        "dateReserved": "2023-07-27T17:05:55.188Z",
        "datePublished": "2023-12-06T16:27:53.832Z",
        "dateUpdated": "2024-08-02T18:02:06.808Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
                "shortName": "Go",
                "dateUpdated": "2023-12-06T16:27:53.832Z"
            },
            "title": "Denial of service via chunk extensions in net/http",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small."
                }
            ],
            "affected": [
                {
                    "vendor": "Go standard library",
                    "product": "net/http/internal",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "net/http/internal",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "1.20.12",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "1.21.0-0",
                            "lessThan": "1.21.5",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "programRoutines": [
                        {
                            "name": "chunkedReader.beginChunk"
                        },
                        {
                            "name": "readChunkLine"
                        },
                        {
                            "name": "chunkedReader.Read"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "CWE-400: Uncontrolled Resource Consumption"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://go.dev/issue/64433"
                },
                {
                    "url": "https://go.dev/cl/547335"
                },
                {
                    "url": "https://groups.google.com/g/golang-dev/c/6ypN5EjibjM/m/KmLVYH_uAgAJ"
                },
                {
                    "url": "https://pkg.go.dev/vuln/GO-2023-2382"
                },
                {
                    "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UIU6HOGV6RRIKWM57LOXQA75BGZSIH6G/"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Bartek Nowotarski"
                }
            ]
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T18:02:06.808Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://go.dev/issue/64433",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://go.dev/cl/547335",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://groups.google.com/g/golang-dev/c/6ypN5EjibjM/m/KmLVYH_uAgAJ",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://pkg.go.dev/vuln/GO-2023-2382",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UIU6HOGV6RRIKWM57LOXQA75BGZSIH6G/",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}