{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2012-1909",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
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                    "vendor_name": "n/a"
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    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transactions with the same identifier, which allows remote attackers to cause a denial of service (unspendable transaction) by leveraging the ability to create a duplicate coinbase transaction."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://en.bitcoin.it/wiki/BIP_0030",
                "refsource": "CONFIRM",
                "url": "https://en.bitcoin.it/wiki/BIP_0030"
            },
            {
                "name": "https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531",
                "refsource": "CONFIRM",
                "url": "https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531"
            },
            {
                "name": "[bitcoin-development] 20120228 Duplicate transactions vulnerability",
                "refsource": "MLIST",
                "url": "http://sourceforge.net/mailarchive/forum.php?thread_name=CAPg%2BsBhmGHnMResVxPDZdfpmWTb9uqD0RrQD7oSXBQq7oHpm8g%40mail.gmail.com&forum_name=bitcoin-development"
            },
            {
                "name": "https://en.bitcoin.it/wiki/CVEs",
                "refsource": "CONFIRM",
                "url": "https://en.bitcoin.it/wiki/CVEs"
            },
            {
                "name": "https://bugs.gentoo.org/show_bug.cgi?id=407793",
                "refsource": "CONFIRM",
                "url": "https://bugs.gentoo.org/show_bug.cgi?id=407793"
            },
            {
                "name": "https://bitcointalk.org/index.php?topic=67738.0",
                "refsource": "CONFIRM",
                "url": "https://bitcointalk.org/index.php?topic=67738.0"
            },
            {
                "name": "http://r6.ca/blog/20120206T005236Z.html",
                "refsource": "MISC",
                "url": "http://r6.ca/blog/20120206T005236Z.html"
            }
        ]
    }
}