cvelist/2021/21xxx/CVE-2021-21390.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-21390",
        "STATE": "PUBLIC",
        "TITLE": "MITM modification of request bodies in MinIO"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "minio",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< RELEASE.2021-03-17T02-33-02Z"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "minio"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "MinIO is an open-source high performance object storage service and it is API compatible with Amazon S3 cloud storage service. In MinIO before version RELEASE.2021-03-17T02-33-02Z, there is a vulnerability which enables MITM modification of request bodies that are meant to have integrity guaranteed by chunk signatures. In a PUT request using aws-chunked encoding, MinIO ordinarily verifies signatures at the end of a chunk. This check can be skipped if the client sends a false chunk size that is much greater than the actual data sent: the server accepts and completes the request without ever reaching the end of the chunk + thereby without ever checking the chunk signature. This is fixed in version RELEASE.2021-03-17T02-33-02Z. As a workaround one can avoid using \"aws-chunked\" encoding-based chunk signature upload requests instead use TLS. MinIO SDKs automatically disable chunked encoding signature when the server endpoint is configured with TLS."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/minio/minio/security/advisories/GHSA-xr7r-7gpj-5pgp",
                "refsource": "CONFIRM",
                "url": "https://github.com/minio/minio/security/advisories/GHSA-xr7r-7gpj-5pgp"
            },
            {
                "name": "https://github.com/minio/minio/pull/11801",
                "refsource": "MISC",
                "url": "https://github.com/minio/minio/pull/11801"
            },
            {
                "name": "https://github.com/minio/minio/commit/e197800f9055489415b53cf137e31e194aaf7ba0",
                "refsource": "MISC",
                "url": "https://github.com/minio/minio/commit/e197800f9055489415b53cf137e31e194aaf7ba0"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-xr7r-7gpj-5pgp",
        "discovery": "UNKNOWN"
    }
}