ubuntu-cve-2017-17821
Vulnerability from osv_ubuntu
Published
2017-12-21 03:29
Modified
2026-04-22 07:38
Summary
Details

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.

Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
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          }
        ]
      },
      "package": {
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        "name": "qtwebkit-opensource-src",
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      },
      "ranges": [
        {
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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    {
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          {
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          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
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      },
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      },
      "package": {
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      },
      "ranges": [
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          ],
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        "5.212.0~alpha2-7",
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        "name": "qtwebkit-source",
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      },
      "ranges": [
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            }
          ],
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      ],
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      ]
    },
    {
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        "name": "webkitgtk",
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          },
          {
            "binary_name": "qml-module-qtwebkit",
            "binary_version": "5.212.0~alpha4-15ubuntu1"
          }
        ]
      },
      "package": {
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        "name": "qtwebkit-opensource-src",
        "purl": "pkg:deb/ubuntu/qtwebkit-opensource-src@5.212.0~alpha4-15ubuntu1?arch=source\u0026distro=jammy"
      },
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt5webkit5",
            "binary_version": "5.212.0~alpha4-36"
          },
          {
            "binary_name": "qml-module-qtwebkit",
            "binary_version": "5.212.0~alpha4-36"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "qtwebkit-opensource-src",
        "purl": "pkg:deb/ubuntu/qtwebkit-opensource-src@5.212.0~alpha4-36?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "5.212.0~alpha4-33build1",
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        "5.212.0~alpha4-34ubuntu4",
        "5.212.0~alpha4-36"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2017-17821",
  "modified": "2026-04-22T07:38:26Z",
  "published": "2017-12-21T03:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-17821"
    },
    {
      "type": "REPORT",
      "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"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-17821"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-17821"
  ]
}



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