CVE-2023-50868

{"id": "CVE-2023-50868", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2024-02-14T16:15:45.377", "references": [{"url": "http://www.openwall.com/lists/oss-security/2024/02/16/2", "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2024/02/16/3", "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/security/cve/CVE-2023-50868", "source": "cve@mitre.org"}, {"url": "https://bugzilla.suse.com/show_bug.cgi?id=1219826", "source": "cve@mitre.org"}, {"url": "https://datatracker.ietf.org/doc/html/rfc5155", "source": "cve@mitre.org"}, {"url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html", "source": "cve@mitre.org"}, {"url": "https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1", "source": "cve@mitre.org"}, {"url": "https://kb.isc.org/docs/cve-2023-50868", "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html", "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/", "source": "cve@mitre.org"}, {"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html", "source": "cve@mitre.org"}, {"url": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/", "source": "cve@mitre.org"}, {"url": "https://security.netapp.com/advisory/ntap-20240307-0008/", "source": "cve@mitre.org"}, {"url": "https://www.isc.org/blogs/2024-bind-security-release/", "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2024/02/16/2", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2024/02/16/3", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://access.redhat.com/security/cve/CVE-2023-50868", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://bugzilla.suse.com/show_bug.cgi?id=1219826", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://datatracker.ietf.org/doc/html/rfc5155", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://kb.isc.org/docs/cve-2023-50868", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00001.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://security.netapp.com/advisory/ntap-20240307-0008/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.isc.org/blogs/2024-bind-security-release/", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "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."}, {"lang": "es", "value": "El aspecto Closest Encloser Proof del protocolo DNS (en RFC 5155 cuando se omite la gu\u00eda RFC 9276) permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de CPU para c\u00e1lculos SHA-1) a trav\u00e9s de respuestas DNSSEC en un ataque de subdominio aleatorio, tambi\u00e9n conocido como \" Problema NSEC3\". La especificaci\u00f3n RFC 5155 implica que un algoritmo debe realizar miles de iteraciones de una funci\u00f3n hash en determinadas situaciones."}], "lastModified": "2025-11-04T19:16:14.730", "sourceIdentifier": "cve@mitre.org"}