CVE-2010-2531

Estado: ModificadaMedia (4.3)—

Gravedad4.3Media · CVSS 2.0

Probabilidad de explotación5.00 %mayor que el 92 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoNo conocidosin código público localizado

La función var_export en PHP v5.2 anterior a v5.2.14 y v5.3 anterior a v5.3.3 vacía el búfer de salida para el usuario cuando se producen ciertos errores graves, incluso cuando display_errors está apagado, lo que permite a atacantes remotos obtener información sensible provocando que la aplicación exceda los límites de memoria, tiempo de ejecución, o recursividad.

CVSS

Puntuación base: 4.3
Versión: 2.0
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 5.00 %
Percentil entre todas las CVEs puntuadas: 92
Fecha de la puntuación: 23/10/2026

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 (2)

Debian — Debian Linux PHP — PHP

CWE

CWE-200

Referencias

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JSON original (NVD)

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{
  "id": "CVE-2010-2531",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2010-08-20T22:00:01.217",
  "references": [
    {
      "url": "http://lists.apple.com/archives/security-announce/2010//Aug/msg00003.html",
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    {
      "url": "http://www.php.net/archive/2010.php#id2010-07-22-1",
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    {
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      "tags": [
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    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=617673",
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    },
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    {
      "url": "http://www.php.net/archive/2010.php#id2010-07-22-1",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.php.net/archive/2010.php#id2010-07-22-2",
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    {
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    {
      "url": "http://www.vupen.com/english/advisories/2010/3081",
      "tags": [
        "Permissions Required"
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    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=617673",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The var_export function in PHP 5.2 before 5.2.14 and 5.3 before 5.3.3 flushes the output buffer to the user when certain fatal errors occur, even if display_errors is off, which allows remote attackers to obtain sensitive information by causing the application to exceed limits for memory, execution time, or recursion."
    },
    {
      "lang": "es",
      "value": "La función var_export en PHP v5.2 anterior a v5.2.14 y v5.3 anterior a v5.3.3 vacía el búfer de salida para el usuario cuando se producen ciertos errores graves, incluso cuando display_errors está apagado, lo que permite a atacantes remotos obtener información sensible provocando que la aplicación exceda los límites de memoria, tiempo de ejecución, o recursividad."
    }
  ],
  "lastModified": "2026-06-16T23:20:55.900",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D6E999D5-90C7-494B-A626-DA2D87D2BC2C",
              "versionEndExcluding": "5.2.14",
              "versionStartIncluding": "5.2.0"
            },
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "955098C0-8C57-40EE-8461-3B5D0E0E045C",
              "versionEndExcluding": "5.3.3",
              "versionStartIncluding": "5.3.0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8C757774-08E7-40AA-B532-6F705C8F7639"
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "036E8A89-7A16-411F-9D31-676313BB7244"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}