FKIE_CVE-2020-1900

Vulnerability from fkie_nvd - Published: 2021-03-11 01:15 - Updated: 2026-06-17 03:02
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.
References
cve-assign@fb.comhttps://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3Patch, Third Party Advisory
cve-assign@fb.comhttps://hhvm.com/blog/2020/06/30/security-update.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hhvm.com/blog/2020/06/30/security-update.htmlVendor Advisory
Impacted products
Vendor Product Version
facebook hhvm *
facebook hhvm *
facebook hhvm 4.57.0
facebook hhvm 4.58.0
facebook hhvm 4.58.1
facebook hhvm 4.59.0
facebook hhvm 4.60.0
facebook hhvm 4.61.0
facebook hhvm 4.62.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "HHVM",
          "vendor": "Facebook",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.62.1",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.62.0"
            },
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.61.1",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.61.0"
            },
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.60.1",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.60.0"
            },
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.59.1",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.59.0"
            },
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.58.2",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "4.58.0",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.57.1",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.57.0"
            },
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.56.1",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "4.33.0",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "4.32.3",
              "versionType": "custom"
            },
            {
              "lessThan": "4.32.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cve-assign@fb.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D2372F3F-5757-4097-BA67-61D7597F6D65",
              "versionEndExcluding": "4.32.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E83916FC-54F0-4A1B-99AD-0B81774170EE",
              "versionEndExcluding": "4.56.1",
              "versionStartIncluding": "4.33.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:4.57.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "4F80C7A6-7FD9-4EAB-8533-F5C8ABF9F258",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:4.58.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "2006DF19-68B4-4139-AAAF-7F81B9742DA7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:4.58.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "8A9D0CEF-7EC2-421B-A45D-48D9663DB60B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:4.59.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "169B4C73-75D5-46FD-BADB-384ABFB9A6C9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:4.60.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "A48FC296-D7B6-4B58-A386-9F5F5F6294AF",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:4.61.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "5F702D76-27C2-4798-BF3C-242906E8E697",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:facebook:hhvm:4.62.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "AC078675-9A81-4B74-8818-0FFE9AF66296",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0."
    },
    {
      "lang": "es",
      "value": "Cuando se anula la serializaci\u00f3n de un objeto con propiedades din\u00e1micas, HHVM necesita reservar previamente el tama\u00f1o completo de la matriz de propiedades din\u00e1micas antes de insertar algo en ella.\u0026#xa0;De lo contrario, la matriz podr\u00eda cambiar de tama\u00f1o, invalidando las referencias almacenadas previamente.\u0026#xa0;Esta reserva previa no estaba ocurriendo en HHVM versiones anteriores a v4.32.3, entre las versiones 4.33.0 y 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62 .0"
    }
  ],
  "id": "CVE-2020-1900",
  "lastModified": "2026-06-17T03:02:34.887",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-03-11T01:15:14.490",
  "references": [
    {
      "source": "cve-assign@fb.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3"
    },
    {
      "source": "cve-assign@fb.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://hhvm.com/blog/2020/06/30/security-update.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://hhvm.com/blog/2020/06/30/security-update.html"
    }
  ],
  "sourceIdentifier": "cve-assign@fb.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "cve-assign@fb.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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