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CVE-2015-8867

Estado: ModificadaAlta (7.5)—

La función openssl_random_pseudo_bytes en ext/openssl/openssl.c en PHP en versiones anteriores a 5.4.44, 5.5.x en versiones anteriores a 5.5.28 y 5.6.x en versiones anteriores a 5.6.12 se basa incorrectamente en la función en desuso RAND_pseudo_bytes, lo que hace que sea más fácil para los atacantes remotos vencer a los mecanismos de protección de cifrado a través de vectores no especificados.

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 (2)

Canonical — Ubuntu LinuxPHP — PHP

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2015-8867",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": true,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
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      "affectedData": [
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          "versions": [
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  "published": "2016-05-22T01:59:06.710",
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          "value": "CWE-310"
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      "value": "The openssl_random_pseudo_bytes function in ext/openssl/openssl.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 incorrectly relies on the deprecated RAND_pseudo_bytes function, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "La función openssl_random_pseudo_bytes en ext/openssl/openssl.c en PHP en versiones anteriores a 5.4.44, 5.5.x en versiones anteriores a 5.5.28 y 5.6.x en versiones anteriores a 5.6.12 se basa incorrectamente en la función en desuso RAND_pseudo_bytes, lo que hace que sea más fácil para los atacantes remotos vencer a los mecanismos de protección de cifrado a través de vectores no especificados."
    }
  ],
  "lastModified": "2026-06-17T00:35:24.057",
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