Out of Bounds Slice index in cfnts leads to remote panic

{
  "id": "d1fa63f7d49c363b5787227a6615d70b284f5fc66b7088cf371a8eae837be921",
  "url": "https://osv.dev/vulnerability/CVE-2023-3036",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Out of Bounds Slice index in cfnts leads to remote panic",
    "summary": "An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit 783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71 enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.",
    "evidence": "osv:CVE-2023-3036",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-3036",
      "aliases": [
        "CVE-2023-3036",
        "GHSA-pwx6-gw47-96cp"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cloudflare/cfnts",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "783490b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "783490b"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3036.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.014310362Z",
      "provider": "osv",
      "references": [
        "https://github.com",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3036.json",
        "https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cp",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-3036"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-119",
          "CWE-125"
        ],
        "cna_assigner": "cloudflare",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "< 783490b"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3036.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-3036",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498027,
  "published_at": "2023-06-14T11:08:08.969+00:00"
}