CVE-2023-50387
Vulnerability from cvelistv5
Published
2024-02-14 00:00
Modified
2024-08-02 22:16
Severity ?
Summary
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.
References
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/02/16/2Mailing List
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/02/16/3Mailing List
cve@mitre.orghttps://access.redhat.com/security/cve/CVE-2023-50387Third Party Advisory
cve@mitre.orghttps://bugzilla.suse.com/show_bug.cgi?id=1219823Issue Tracking
cve@mitre.orghttps://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.htmlThird Party Advisory
cve@mitre.orghttps://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1Patch
cve@mitre.orghttps://kb.isc.org/docs/cve-2023-50387Third Party Advisory, VDB Entry
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/Mailing List
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/Mailing List
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/Mailing List
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
cve@mitre.orghttps://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387Patch, Vendor Advisory
cve@mitre.orghttps://news.ycombinator.com/item?id=39367411Third Party Advisory
cve@mitre.orghttps://news.ycombinator.com/item?id=39372384Issue Tracking
cve@mitre.orghttps://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/Vendor Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20240307-0007/
cve@mitre.orghttps://www.athene-center.de/aktuelles/key-trapThird Party Advisory
cve@mitre.orghttps://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdfTechnical Description, Third Party Advisory
cve@mitre.orghttps://www.isc.org/blogs/2024-bind-security-release/Third Party Advisory
cve@mitre.orghttps://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/Press/Media Coverage, Third Party Advisory
cve@mitre.orghttps://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/02/16/2Mailing List
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/02/16/3Mailing List
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-50387Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.suse.com/show_bug.cgi?id=1219823Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1Patch
af854a3a-2127-422b-91ae-364da2661108https://kb.isc.org/docs/cve-2023-50387Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/Mailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/Mailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/Mailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
af854a3a-2127-422b-91ae-364da2661108https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://news.ycombinator.com/item?id=39367411Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://news.ycombinator.com/item?id=39372384Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240307-0007/
af854a3a-2127-422b-91ae-364da2661108https://www.athene-center.de/aktuelles/key-trapThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdfTechnical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.isc.org/blogs/2024-bind-security-release/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/Press/Media Coverage, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/Patch, Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

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          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/"
        },
        {
          "name": "FEDORA-2024-c967c7d287",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/"
        },
        {
          "name": "FEDORA-2024-e00eceb11c",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/"
        },
        {
          "name": "FEDORA-2024-fae88b73eb",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20240307-0007/"
        },
        {
          "name": "[debian-lts-announce] 20240517 [SECURITY] [DLA 3816-1] bind9 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-50387",
    "datePublished": "2024-02-14T00:00:00",
    "dateReserved": "2023-12-07T00:00:00",
    "dateUpdated": "2024-08-02T22:16:46.692Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-50387\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2024-02-14T16:15:45.300\",\"lastModified\":\"2024-11-21T08:36:56.937\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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.\"},{\"lang\":\"es\",\"value\":\"Ciertos aspectos DNSSEC del protocolo DNS (en RFC 4035 y RFC relacionados) permiten a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de CPU) a trav\u00e9s de una o m\u00e1s respuestas DNSSEC cuando hay una zona con muchos registros DNSKEY y RRSIG, tambi\u00e9n conocido como \\\"KeyTrap\\\". \\\" asunto. La especificaci\u00f3n del protocolo implica que un algoritmo debe evaluar todas las combinaciones de registros DNSKEY y RRSIG.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"142AD0DD-4CF3-4D74-9442-459CE3347E3A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4CFF558-3C47-480D-A2F0-BABF26042943\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F6FB57C-2BC7-487C-96DD-132683AEB35D\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*\",\"matchCriteriaId\":\"AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A7DF96F8-BA6A-4780-9CA3-F719B3F81074\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB18C4CE-5917-401E-ACF7-2747084FD36E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB79EE26-FC32-417D-A49C-A1A63165A968\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"821614DD-37DD-44E2-A8A4-FE8D23A33C3C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2022_23h2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"75CCACE6-A0EE-4A6F-BD5A-7AA504B02717\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.90\",\"matchCriteriaId\":\"964796B3-BA45-4180-A8DA-64CF93CED122\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.71\",\"matchCriteriaId\":\"8A8328E8-C652-4262-8C00-D89AD8F75CCF\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.8.0\",\"versionEndExcluding\":\"4.8.6\",\"matchCriteriaId\":\"5207D316-7DC9-4724-BC48-C8D3EC5087E8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9.0\",\"versionEndExcluding\":\"4.9.3\",\"matchCriteriaId\":\"FEE64451-7CB9-45BD-8168-9F48199A9363\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.0.0\",\"versionEndExcluding\":\"5.0.2\",\"matchCriteriaId\":\"0526B76D-52BB-4FA1-B692-8EDEC673EAE5\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"9.0.0\",\"versionEndIncluding\":\"9.16.46\",\"matchCriteriaId\":\"F3814976-5223-4615-BA7B-E33083D3EC26\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"9.18.0\",\"versionEndIncluding\":\"9.18.22\",\"matchCriteriaId\":\"140CCABA-F134-4CC2-9960-258D6BFF34DD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"9.19.0\",\"versionEndIncluding\":\"9.19.20\",\"matchCriteriaId\":\"71BAD5BF-8532-4988-A772-6CD7B851E9E2\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.19.1\",\"matchCriteriaId\":\"8C094EEB-BAD6-495B-B1CB-671D31549F15\"}]}]}],\"references\":[{\"url\":\"http://www.openwall.com/lists/oss-security/2024/02/16/2\",\"source\":\"cve@mitre.org\",\"tags\":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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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