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CVE-2018-6343

Estado: ModificadaAlta (7.5)—

Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a denial of service issue when parsing a Certificate/CertificateRequest HTTP2 Frame over a fizz (TLS 1.3) transport. This issue affects Proxygen releases starting from v2018.10.29.00 until the fix in v2018.11.19.00.

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 (1)

Facebook — Proxygen

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2018-6343",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2018-6343",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-05-06T16:05:02.879302Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
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    ],
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        "type": "Secondary",
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          "privilegesRequired": "NONE",
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        "impactScore": 3.6,
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      }
    ]
  },
  "affected": [
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      "source": "cve-assign@fb.com",
      "affectedData": [
        {
          "vendor": "Facebook",
          "product": "Proxygen",
          "versions": [
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              "version": "v2018.11.19.00"
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            {
              "status": "affected",
              "version": "v2018.10.29.00",
              "lessThan": "unspecified",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "unspecified",
              "lessThan": "v2018.10.29.00",
              "versionType": "custom"
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  ],
  "published": "2018-12-31T22:29:00.527",
  "references": [
    {
      "url": "https://github.com/facebook/proxygen/commit/0600ebe59c3e82cd012def77ca9ca1918da74a71",
      "tags": [
        "Patch",
        "Third Party Advisory"
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      "source": "cve-assign@fb.com"
    },
    {
      "url": "https://github.com/facebook/proxygen/commit/0600ebe59c3e82cd012def77ca9ca1918da74a71",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve-assign@fb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a denial of service issue when parsing a Certificate/CertificateRequest HTTP2 Frame over a fizz (TLS 1.3) transport. This issue affects Proxygen releases starting from v2018.10.29.00 until the fix in v2018.11.19.00."
    },
    {
      "lang": "es",
      "value": "Proxygen no logra validar que un gestor de autenticación secundario sea fijado antes de desreferenciarse. Esto podría provocar una denegación de servicio (DoS) cuando se analiza un frame HTTP2 \"Certificate/CertificateRequest\" sobre un transporte del tipo fizz (TLS 1.3). Este problema afecta a las distribuciones de Proxygen desde la versión v2018.10.29.00 hasta que se arregla en la v2018.10.29.00."
    }
  ],
  "lastModified": "2026-06-17T02:01:42.390",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "2018.11.19.00",
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          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "cve-assign@fb.com"
}