Incomplete Internal State Distinction in ntpsec

{
  "id": "7f7ef487ffea95f6cf3abaa94ab8578752f7b13b3dc06345ce470fbd2e2ebd39",
  "url": "https://osv.dev/vulnerability/CVE-2023-4012",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Incomplete Internal State Distinction in ntpsec",
    "summary": "ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3).",
    "evidence": "osv:CVE-2023-4012",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-4012",
      "aliases": [
        "CVE-2023-4012"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ntpsec/ntpsec",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5fe977195c1d4967e4cd72cef9efe4dc4de44e43"
                },
                {
                  "last_affected": "5fe977195c1d4967e4cd72cef9efe4dc4de44e43"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ntpsec:ntpsec:1.2.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.2.2"
                      },
                      {
                        "last_affected": "1.2.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            },
            {
              "repo": "https://gitlab.com/NTPsec/ntpsec",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5fe977195c1d4967e4cd72cef9efe4dc4de44e43"
                },
                {
                  "last_affected": "5fe977195c1d4967e4cd72cef9efe4dc4de44e43"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.2.2"
                      },
                      {
                        "last_affected": "1.2.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2.2",
            "NTPsec_1_2_2a"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-4012.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.312066135Z",
      "provider": "osv",
      "references": [
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1038422",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4012.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-4012",
        "https://gitlab.com/NTPsec/ntpsec/-/issues/794"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-372"
        ],
        "cna_assigner": "GitLab",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4012.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-4012",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505820,
  "published_at": "2023-08-07T17:30:33.452+00:00"
}