FKIE_CVE-2017-17821

Vulnerability from fkie_nvd - Published: 2017-12-21 03:29 - Updated: 2025-04-20 01:37
Severity ?
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
WTF/wtf/FastBitVector.h in WebKit, as distributed in Safari Technology Preview Release 46, allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because it calls the FastBitVectorWordOwner::resizeSlow function (in WTF/wtf/FastBitVector.cpp) for a purpose other than initializing a bitvector size, and resizeSlow mishandles cases where the old array length is greater than the new array length.
References
cve@mitre.orghttps://bugs.webkit.org/show_bug.cgi?id=181020Permissions Required
cve@mitre.orghttps://github.com/dwfault/PoCs/blob/master/WebKit%20Misuse%20of%20WTF:wtf:FastBitVector%20result%20in%20potential%20BOF/WebKit%20Misuse%20of%20WTF:wtf:FastBitVector%20result%20in%20potential%20BOF.mdThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.webkit.org/show_bug.cgi?id=181020Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://github.com/dwfault/PoCs/blob/master/WebKit%20Misuse%20of%20WTF:wtf:FastBitVector%20result%20in%20potential%20BOF/WebKit%20Misuse%20of%20WTF:wtf:FastBitVector%20result%20in%20potential%20BOF.mdThird Party Advisory
Impacted products
Vendor Product Version
apple safari 46
To clipboard 

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              "criteria": "cpe:2.3:a:apple:safari:46:*:*:*:technology_preview:*:*:*",
              "matchCriteriaId": "D0B3F3F3-4D70-47BD-A6D7-24A20B0FFB06",
              "vulnerable": true
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WTF/wtf/FastBitVector.h in WebKit, as distributed in Safari Technology Preview Release 46, allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because it calls the FastBitVectorWordOwner::resizeSlow function (in WTF/wtf/FastBitVector.cpp) for a purpose other than initializing a bitvector size, and resizeSlow mishandles cases where the old array length is greater than the new array length."
    },
    {
      "lang": "es",
      "value": "WTF/wtf/FastBitVector.h en WebKit, tal y como viene distribuido en Safari Technology Preview Release 46, permite que los atacantes remotos provoquen una denegaci\u00f3n de servicio (desbordamiento de b\u00fafer) o posiblemente otro impacto porque llama a la funci\u00f3n FastBitVectorWordOwner::resizeSlow (en WTF/wtf/FastBitVector.cpp) para un prop\u00f3sito diferente que inicializar un tama\u00f1o bitvector, y resizeSlow gestiona de manera incorrecta los casos en los que la longitud antigua del array es mayor que la nueva."
    }
  ],
  "id": "CVE-2017-17821",
  "lastModified": "2025-04-20T01:37:25.860",
  "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
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    "cvssMetricV30": [
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-12-21T03:29:00.630",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://bugs.webkit.org/show_bug.cgi?id=181020"
    },
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      "tags": [
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      ],
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    },
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      "tags": [
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      "url": "https://bugs.webkit.org/show_bug.cgi?id=181020"
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      "tags": [
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      "url": "https://github.com/dwfault/PoCs/blob/master/WebKit%20Misuse%20of%20WTF:wtf:FastBitVector%20result%20in%20potential%20BOF/WebKit%20Misuse%20of%20WTF:wtf:FastBitVector%20result%20in%20potential%20BOF.md"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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