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CVE-2007-4657

Estado: ModificadaAlta (7.5)—

Múltiples desbordamientos de entero en PHP 4 anterior a 4.4.8, y PHP 5 anterior a 5.2.4, permite a atacantes remotos obtener información sensible (contenido de memoria) o provocar denegación de servicio (caida de hilo) a través de un valor de len grande en la función (1) strspn o (2) strcspn, lo cual dispara un lectura fuera de límite. NOTA: estos afecta a diferentes versiones de producto que al CVE-2007-3996.

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 (3)

Canonical — Ubuntu LinuxDebian — Debian LinuxPHP — PHP

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2007-4657",
  "cveTags": [],
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      {
        "type": "Primary",
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        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
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      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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  "published": "2007-09-04T22:17:00.000",
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-189"
        }
      ]
    }
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      "lang": "en",
      "value": "Multiple integer overflows in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, allow remote attackers to obtain sensitive information (memory contents) or cause a denial of service (thread crash) via a large len value to the (1) strspn or (2) strcspn function, which triggers an out-of-bounds read.  NOTE: this affects different product versions than CVE-2007-3996."
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      "lang": "es",
      "value": "Múltiples desbordamientos de entero en PHP 4 anterior a 4.4.8, y PHP 5 anterior a 5.2.4, permite a atacantes remotos obtener información sensible (contenido de memoria) o provocar denegación de servicio (caida de hilo) a través de un valor de len grande en la función (1) strspn o (2) strcspn, lo cual dispara un lectura fuera de límite. NOTA: estos afecta a diferentes versiones de producto que al CVE-2007-3996."
    }
  ],
  "lastModified": "2026-06-16T22:44:31.203",
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      "comment": "The only effect of this bug is to cause the process to read from a random segment of memory, if a large "length" parameter is passed to the strspn/strcspn function, which is under the control of the script author.  This bug has no security impact.\n",
      "lastModified": "2007-09-05T00:00:00",
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}