{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2023-50868",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
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                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
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                                            "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 Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the \"NSEC3\" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations."
            }
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                        "value": "n/a"
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            {
                "refsource": "MISC",
                "name": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/",
                "url": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/"
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            {
                "refsource": "MISC",
                "name": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html",
                "url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html"
            },
            {
                "refsource": "MISC",
                "name": "https://www.isc.org/blogs/2024-bind-security-release/",
                "url": "https://www.isc.org/blogs/2024-bind-security-release/"
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            {
                "refsource": "MISC",
                "name": "https://datatracker.ietf.org/doc/html/rfc5155",
                "url": "https://datatracker.ietf.org/doc/html/rfc5155"
            },
            {
                "refsource": "MISC",
                "name": "https://kb.isc.org/docs/cve-2023-50868",
                "url": "https://kb.isc.org/docs/cve-2023-50868"
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                "refsource": "MISC",
                "name": "https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1",
                "url": "https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1"
            },
            {
                "refsource": "MISC",
                "name": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html",
                "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html"
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            {
                "refsource": "MISC",
                "name": "https://access.redhat.com/security/cve/CVE-2023-50868",
                "url": "https://access.redhat.com/security/cve/CVE-2023-50868"
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                "refsource": "MISC",
                "name": "https://bugzilla.suse.com/show_bug.cgi?id=1219826",
                "url": "https://bugzilla.suse.com/show_bug.cgi?id=1219826"
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                "refsource": "MLIST",
                "name": "[oss-security] 20240216 Re: Unbound: disclosure of CVE-2023-50387 and CVE-2023-50868 DNSSEC validation vulnerabilities",
                "url": "http://www.openwall.com/lists/oss-security/2024/02/16/2"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20240216 Re: Unbound: disclosure of CVE-2023-50387 and CVE-2023-50868 DNSSEC validation vulnerabilities",
                "url": "http://www.openwall.com/lists/oss-security/2024/02/16/3"
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            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-2e26eccfcb",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/"
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            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-e24211eff0",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-21310568fa",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20240221 [SECURITY] [DLA 3736-1] unbound security update",
                "url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-b0f9656a76",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-4e36df9dfd",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-499b9be35f",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-c36c448396",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-c967c7d287",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-e00eceb11c",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/"
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            {
                "refsource": "FEDORA",
                "name": "FEDORA-2024-fae88b73eb",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20240307-0008/",
                "url": "https://security.netapp.com/advisory/ntap-20240307-0008/"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20240517 [SECURITY] [DLA 3816-1] bind9 security update",
                "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html"
            }
        ]
    }
}