CVE-2023-50868 (GCVE-0-2023-50868)
Vulnerability from cvelistv5
Published
2024-02-14 00:00
Modified
2025-11-04 18:20
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • n/a
Summary
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.
References
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/02/16/2 Issue Tracking, Mailing List
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/02/16/3 Issue Tracking, Mailing List
cve@mitre.org https://access.redhat.com/security/cve/CVE-2023-50868 Vendor Advisory
cve@mitre.org https://bugzilla.suse.com/show_bug.cgi?id=1219826 Issue Tracking
cve@mitre.org https://datatracker.ietf.org/doc/html/rfc5155 Technical Description
cve@mitre.org https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html Vendor Advisory
cve@mitre.org https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 Release Notes
cve@mitre.org https://kb.isc.org/docs/cve-2023-50868 Third Party Advisory
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html Vendor Advisory, Mailing List
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ Vendor Advisory, Mailing List
cve@mitre.org https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html Mailing List, Release Notes
cve@mitre.org https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ Release Notes
cve@mitre.org https://security.netapp.com/advisory/ntap-20240307-0008/ Vendor Advisory
cve@mitre.org https://www.isc.org/blogs/2024-bind-security-release/ Exploit, Mitigation, Press/Media Coverage
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2024/02/16/2 Issue Tracking, Mailing List
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2024/02/16/3 Issue Tracking, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/security/cve/CVE-2023-50868 Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.suse.com/show_bug.cgi?id=1219826 Issue Tracking
af854a3a-2127-422b-91ae-364da2661108 https://datatracker.ietf.org/doc/html/rfc5155 Technical Description
af854a3a-2127-422b-91ae-364da2661108 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 Release Notes
af854a3a-2127-422b-91ae-364da2661108 https://kb.isc.org/docs/cve-2023-50868 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2024/09/msg00001.html Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ Vendor Advisory, Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html Mailing List, Release Notes
af854a3a-2127-422b-91ae-364da2661108 https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ Release Notes
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20240307-0008/ Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.isc.org/blogs/2024-bind-security-release/ Exploit, Mitigation, Press/Media Coverage
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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          "url": "https://security.netapp.com/advisory/ntap-20240307-0008/"
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-50868",
    "datePublished": "2024-02-14T00:00:00.000Z",
    "dateReserved": "2023-12-14T00:00:00.000Z",
    "dateUpdated": "2025-11-04T18:20:42.287Z",
    "state": "PUBLISHED"
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      "cveMetadata": "{\"cveId\": \"CVE-2023-50868\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T18:20:42.287Z\", \"dateReserved\": \"2023-12-14T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2024-02-14T00:00:00.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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