CVE-2017-17821

CVSS V2 High 7.5 CVSS V3 Critical 9.8
Description
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.
Overview
  • CVE ID
  • CVE-2017-17821
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2017-12-21T03:29:00
  • Last Modified Date
  • 2018-01-10T23:05:01
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:apple:safari:46:*:*:*:technology_preview:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
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 Third Party Advisory
https://bugs.webkit.org/show_bug.cgi?id=181020 Permissions Required
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-17821
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17821
History
Created Old Value New Value Data Type Notes
2022-05-10 18:50:21 Added to TrackCVE
2022-12-03 00:17:23 2017-12-21T03:29Z 2017-12-21T03:29:00 CVE Published Date updated
2022-12-03 00:17:23 2018-01-10T23:05:01 CVE Modified Date updated
2022-12-03 00:17:23 Analyzed Vulnerability Status updated