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CVE-2018-6337

Estado: ModificadaAlta (7.5)—

folly::secureRandom will re-use a buffer between parent and child processes when fork() is called. That will result in multiple forked children producing repeat (or similar) results. This affects HHVM 3.26 prior to 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00.

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)

Facebook — FollyFacebook — Hhvm

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2018-6337",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2018-6337",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-05-06T16:36:10.630630Z"
        }
      }
    ],
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
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          "confidentialityImpact": "NONE"
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
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      "affectedData": [
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          "vendor": "Facebook",
          "product": "HHVM",
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              "version": "3.26.3"
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  "published": "2018-12-31T22:29:00.247",
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      "url": "https://github.com/facebook/folly/commit/8e927ee48b114c8a2f90d0cbd5ac753795a6761f",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve-assign@fb.com"
    },
    {
      "url": "https://github.com/facebook/hhvm/commit/e2d10a1e32d01f71aaadd81169bcb9ae86c5d6b8",
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      "url": "https://hhvm.com/blog/2018/05/24/hhvm-3.26.3.html",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "cve-assign@fb.com",
      "description": [
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        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "folly::secureRandom will re-use a buffer between parent and child processes when fork() is called. That will result in multiple forked children producing repeat (or similar) results. This affects HHVM 3.26 prior to 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00."
    },
    {
      "lang": "es",
      "value": "folly::secureRandom reutilizará un búfer entre los procesos padre e hijo cuando una bifurcación() es llamada. Esto resultará en múltiples hijos bifurcados, produciendo resultados repetidos o similares. Esto afecta a las versiones de HHVM 3.26 anteriores a la 3.26.3 y a la librería folly entre las versiones v2017.12.11.00 y v2018.08.09.00."
    }
  ],
  "lastModified": "2026-06-17T02:01:41.503",
  "configurations": [
    {
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              "versionEndIncluding": "2018.08.09.00",
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}