{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2019-7167",
        "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": "Zcash, before the Sapling network upgrade (2018-10-28), had a counterfeiting vulnerability. A key-generation process, during evaluation of polynomials related to a to-be-proven statement, produced certain bypass elements. Availability of these elements allowed a cheating prover to bypass a consistency check, and consequently transform the proof of one statement into an ostensibly valid proof of a different statement, thereby breaking the soundness of the proof system. This misled the original Sprout zk-SNARK verifier into accepting the correctness of a transaction."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "http://fortune.com/2019/02/05/zcash-vulnerability-cryptocurrency/",
                "refsource": "MISC",
                "name": "http://fortune.com/2019/02/05/zcash-vulnerability-cryptocurrency/"
            },
            {
                "url": "https://z.cash/blog/zcash-counterfeiting-vulnerability-successfully-remediated/",
                "refsource": "MISC",
                "name": "https://z.cash/blog/zcash-counterfeiting-vulnerability-successfully-remediated/"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/JinBean/CVE-Extension",
                "url": "https://github.com/JinBean/CVE-Extension"
            }
        ]
    },
    "source": {
        "discovery": "INTERNAL"
    }
}