{"dataType":"CVE_RECORD","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2023-50387","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","dateUpdated":"2025-11-04T18:20:34.949Z","dateReserved":"2023-12-07T00:00:00.000Z","datePublished":"2024-02-14T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2024-06-10T16:14:16.780Z"},"descriptions":[{"lang":"en","value":"Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the \"KeyTrap\" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://www.athene-center.de/aktuelles/key-trap"},{"url":"https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/"},{"url":"https://kb.isc.org/docs/cve-2023-50387"},{"url":"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html"},{"url":"https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/"},{"url":"https://news.ycombinator.com/item?id=39367411"},{"url":"https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/"},{"url":"https://www.isc.org/blogs/2024-bind-security-release/"},{"url":"https://news.ycombinator.com/item?id=39372384"},{"url":"https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1"},{"url":"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387"},{"url":"https://access.redhat.com/security/cve/CVE-2023-50387"},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1219823"},{"url":"https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf"},{"name":"[oss-security] 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