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CVE-2023-49316

Estado: ModificadaAlta (7.5)—

En Math/BinaryField.php en phpseclib anterior a 3.0.34, grados excesivamente grandes pueden provocar una denegación de servicio.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Phpseclib — Phpseclib

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-49316",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2023-11-27T18:15:07.537",
  "references": [
    {
      "url": "https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.34",
      "tags": [
        "Release Notes"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.34",
      "tags": [
        "Release Notes"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-834"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Math/BinaryField.php in phpseclib 3 before 3.0.34, excessively large degrees can lead to a denial of service."
    },
    {
      "lang": "es",
      "value": "En Math/BinaryField.php en phpseclib anterior a 3.0.34, grados excesivamente grandes pueden provocar una denegación de servicio."
    }
  ],
  "lastModified": "2026-06-17T06:35:48.733",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E0BC1749-CFC3-47D7-BD37-EDF5634758AE",
              "versionEndExcluding": "3.0.34",
              "versionStartIncluding": "3.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}