FKIE_CVE-2018-6335

Vulnerability from fkie_nvd - Published: 2018-12-31 19:29 - Updated: 2026-06-17 02:01
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A Malformed h2 frame can cause 'std::out_of_range' exception when parsing priority meta data. This behavior can lead to denial-of-service. This affects all supported versions of HHVM (3.25.2, 3.24.6, and 3.21.10 and below) when using the proxygen server to handle HTTP2 requests.
References
cve-assign@fb.comhttps://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56Patch, Third Party Advisory
cve-assign@fb.comhttps://hhvm.com/blog/2018/05/04/hhvm-3.25.3.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.htmlVendor Advisory
Impacted products
Vendor Product Version
facebook hhvm *
facebook hhvm 3.24.6
facebook hhvm 3.25.2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "HHVM",
          "vendor": "Facebook",
          "versions": [
            {
              "status": "affected",
              "version": "3.25.3"
            },
            {
              "status": "affected",
              "version": "3.25.0"
            },
            {
              "status": "affected",
              "version": "3.24.7"
            },
            {
              "status": "affected",
              "version": "3.22.0"
            },
            {
              "status": "affected",
              "version": "3.21.11"
            },
            {
              "lessThan": "3.21.11",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cve-assign@fb.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2163DCC3-41A2-4272-97EA-860A6A867914",
              "versionEndIncluding": "3.21.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:3.24.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "E7E374ED-033B-4C0C-A056-797A23C17CDC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:3.25.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "3290E2E7-0F98-418B-82E9-C1779E48A30F",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Malformed h2 frame can cause \u0027std::out_of_range\u0027 exception when parsing priority meta data. This behavior can lead to denial-of-service. This affects all supported versions of HHVM (3.25.2, 3.24.6, and 3.21.10 and below) when using the proxygen server to handle HTTP2 requests."
    },
    {
      "lang": "es",
      "value": "Un frame h2 malformado puede provocar una excepci\u00f3n \u0027std::out_of_range\u0027 durante el an\u00e1lisis de metadatos prioritarios. Este comportamiento puede provocar una denegaci\u00f3n de servicio (DoS). Esto afecta a todas las versiones de HHVM soportadas (en versiones anteriores a las 3.25.2, 3.24.6 y 3.21.10)"
    }
  ],
  "id": "CVE-2018-6335",
  "lastModified": "2026-06-17T02:01:41.137",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2018-6335",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-05-06T19:01:52.053278Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2018-12-31T19:29:00.417",
  "references": [
    {
      "source": "cve-assign@fb.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56"
    },
    {
      "source": "cve-assign@fb.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html"
    }
  ],
  "sourceIdentifier": "cve-assign@fb.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "cve-assign@fb.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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