{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2017-9230",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "** DISPUTED ** The Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, multiple candidate root values ending with the same 4 bytes, and calculations involving sqrt numbers. This violates the security assumptions of (1) the choice of input, outside of the dedicated nonce area, fed into the Proof-of-Work function should not change its difficulty to evaluate and (2) every Proof-of-Work function execution should be independent. NOTE: a number of persons feel that this methodology is a benign mining optimization, not a vulnerability."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://arxiv.org/ftp/arxiv/papers/1604/1604.00575.pdf",
                "refsource": "MISC",
                "url": "https://arxiv.org/ftp/arxiv/papers/1604/1604.00575.pdf"
            },
            {
                "name": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-April/013996.html",
                "refsource": "MISC",
                "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-April/013996.html"
            },
            {
                "name": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014351.html",
                "refsource": "MISC",
                "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014351.html"
            },
            {
                "name": "98657",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/98657"
            },
            {
                "name": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014352.html",
                "refsource": "MISC",
                "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014352.html"
            },
            {
                "name": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014349.html",
                "refsource": "MISC",
                "url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014349.html"
            },
            {
                "name": "http://www.mit.edu/~jlrubin//public/pdfs/Asicboost.pdf",
                "refsource": "MISC",
                "url": "http://www.mit.edu/~jlrubin//public/pdfs/Asicboost.pdf"
            }
        ]
    }
}