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CVE-2012-0830

Estado: ModificadaAlta (7.5)—Exploit
Gravedad7.5Alta · CVSS 2.0
Probabilidad de explotación30 %mayor que el 98 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB

La función php_register_variable_ex en php_variables.c en PHP v5.3.9 permite a atacantes remotos ejecutar código de su elección a través de una solicitud que contenga un gran número de variable. Se trata de un problema relacionado con el manejo inadecuado de las variables de tipo matriz (array). NOTA: Esta vulnerabilidad existe debido a una corrección incorrecta para el CVE-2011-4885.

CVSS

Puntuación base
7.5
Versión
2.0
Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
30 %
Percentil entre todas las CVEs puntuadas
98
Fecha de la puntuación
21/10/2026

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).

Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

PHP — PHP

CWE

Referencias

Mostrar las 46 referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2012-0830",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "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": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2012-02-06T20:55:03.080",
  "references": [
    {
      "url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2012/May/msg00001.html",
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html",
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      "url": "http://www.debian.org/security/2012/dsa-2403",
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    {
      "url": "http://www.h-online.com/security/news/item/Critical-PHP-vulnerability-being-fixed-1427316.html",
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    {
      "url": "http://www.osvdb.org/78819",
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    {
      "url": "http://www.php.net/ChangeLog-5.php#5.3.10",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/51830",
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    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/72911",
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://openwall.com/lists/oss-security/2012/02/02/12",
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      "url": "http://support.apple.com/kb/HT5281",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "http://thexploit.com/sec/critical-php-remote-vulnerability-introduced-in-fix-for-php-hashtable-collision-dos/",
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      "url": "http://www.debian.org/security/2012/dsa-2403",
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      "url": "http://www.h-online.com/security/news/item/Critical-PHP-vulnerability-being-fixed-1427316.html",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php#5.3.10",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/51830",
      "tags": [
        "Exploit"
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    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/72911",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://gist.github.com/1725489",
      "tags": [
        "Exploit"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The php_register_variable_ex function in php_variables.c in PHP 5.3.9 allows remote attackers to execute arbitrary code via a request containing a large number of variables, related to improper handling of array variables.  NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-4885."
    },
    {
      "lang": "es",
      "value": "La función php_register_variable_ex en php_variables.c en PHP v5.3.9 permite a atacantes remotos ejecutar código de su elección a través de una solicitud que contenga un gran número de variable. Se trata de un problema relacionado con el manejo inadecuado de las variables de tipo matriz (array). NOTA: Esta vulnerabilidad existe debido a una corrección incorrecta para el CVE-2011-4885."
    }
  ],
  "lastModified": "2026-06-16T23:38:20.690",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:5.3.9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EC3F1891-032D-409C-904C-A415D2323DFC"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}