CVE-2010-1128

Estado: ModificadaMedia (6.4)—Exploit

Gravedad6.4Media · CVSS 2.0

Probabilidad de explotación8.09 %mayor que el 95 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoDisponiblePublicado en Exploit-DB

El Linear Congruential Generator (LCG) en PHP anteriores a v5.2.13 no provee la entropía esperada, lo que hace más fácil para atacantes dependiendo del contexto adivinar valores que deberían ser impredecibles, como se demostró con cookies de sesión generadas utilizando la función uniqid.

CVSS

Puntuación base: 6.4
Versión: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 8.09 %
Percentil entre todas las CVEs puntuadas: 95
Fecha de la puntuación: 22/10/2026

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.

Publicado en Exploit-DB · PHP 5.3.1 - LCG Entropy Security (26/2/2010)

Tecnologías afectadas (1)

PHP — PHP

CWE

CWE-310

Referencias

Mostrar las 16 referencias

JSON original (NVD)

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{
  "id": "CVE-2010-1128",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2010-03-26T20:30:00.877",
  "references": [
    {
      "url": "http://secunia.com/advisories/38708",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/42410",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.php.net/releases/5_2_13.php",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2010-0919.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/38430",
      "tags": [
        "Exploit"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/0479",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/3081",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/38708",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/42410",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/releases/5_2_13.php",
      "tags": [
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2010-0919.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/38430",
      "tags": [
        "Exploit"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/0479",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/3081",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-310"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Linear Congruential Generator (LCG) in PHP before 5.2.13 does not provide the expected entropy, which makes it easier for context-dependent attackers to guess values that were intended to be unpredictable, as demonstrated by session cookies generated by using the uniqid function."
    },
    {
      "lang": "es",
      "value": "El Linear Congruential Generator (LCG) en PHP anteriores a v5.2.13 no provee la entropía esperada, lo que hace más fácil para atacantes dependiendo del contexto adivinar valores que deberían ser impredecibles, como se demostró con cookies de sesión generadas utilizando la función uniqid."
    }
  ],
  "lastModified": "2026-06-16T23:17:34.080",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "438EC66E-3D70-4780-AC53-22F850818612",
              "versionEndIncluding": "5.2.12"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CD02D837-FD28-4E0F-93F8-25E8D1C84A99"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "88358D1E-BE6F-4CE3-A522-83D1FA4739E3"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D8B97B03-7DA7-4A5F-89B4-E78CAB20DE17"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "86767200-6C9C-4C3E-B111-0E5BE61E197B"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B00B416D-FF23-4C76-8751-26D305F0FA0F"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CCB6CDDD-70D3-4004-BCE0-8C4723076103"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A782CA26-9C38-40A8-92AE-D47B14D2FCE3"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1C0E7E2A-4770-4B68-B74C-5F5A6E1876DC"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.8:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0892C89E-9389-4452-B7E0-981A763CD426"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "635F3CB1-B042-43CC-91AB-746098018D8C"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E1F32DDF-17A3-45B5-9227-833EBEBD3923"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.2.11:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2CDFB7E9-8510-430F-BFBC-FD811D60DC78"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/show_bug.cgi?id=577582\n\nThe Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw.  More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/",
      "lastModified": "2010-04-14T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}