FKIE_CVE-2023-3036

Vulnerability from fkie_nvd - Published: 2023-06-14 12:15 - Updated: 2026-06-17 06:13
Severity
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
References
cna@cloudflare.comhttps://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cpPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cpPatch, Third Party Advisory
Impacted products
Vendor Product Version
cloudflare cfnts *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://github.com",
          "defaultStatus": "unaffected",
          "packageName": "cfnts",
          "platforms": [
            "rust"
          ],
          "product": "cfnts",
          "vendor": "Cloudflare",
          "versions": [
            {
              "lessThan": "\u003c 783490b",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "source": "cna@cloudflare.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cloudflare:cfnts:*:*:*:*:*:rust:*:*",
              "matchCriteriaId": "7EF27AB6-93DC-428C-95EE-46B241094EE2",
              "versionEndExcluding": "2023-06-01",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit  783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71 \u00a0enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.\n"
    }
  ],
  "id": "CVE-2023-3036",
  "lastModified": "2026-06-17T06:13:13.443",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0,
        "source": "cna@cloudflare.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-3036",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-01-02T19:22:25.948021Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-06-14T12:15:09.647",
  "references": [
    {
      "source": "cna@cloudflare.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cp"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cp"
    }
  ],
  "sourceIdentifier": "cna@cloudflare.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "cna@cloudflare.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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