9.8 - CVE-2017-17821

Executive Summary

Informations
Name	CVE-2017-17821	First vendor Publication	2017-12-20
Vendor	Cve	Last vendor Modification	2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score	9.8
Base Score	9.8	Environmental Score	9.8
impact SubScore	5.9	Temporal Score	9.8
Exploitabality Sub Score	3.9

Attack Vector	Network	Attack Complexity	Low
Privileges Required	None	User Interaction	None
Scope	Unchanged	Confidentiality Impact	High
Integrity Impact	High	Availability Impact	High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score	7.5	Attack Range	Network
Cvss Impact Score	6.4	Attack Complexity	Low
Cvss Expoit Score	10	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17821

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-119	Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

Type	Description	Count
Application	Apple Safari cpe:2.3:a:apple:safari:46::::technology_preview:::	1

Sources (Detail)

https://bugs.webkit.org/show_bug.cgi?id=181020
https://github.com/dwfault/PoCs/blob/master/WebKit%20Misuse%20of%20WTF:wtf:Fa...

Source	Url

Alert History

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Date	Informations
2024-11-28 13:04:57	Multiple Updates
2021-05-04 12:59:43	Multiple Updates
2021-04-22 02:12:49	Multiple Updates
2020-05-23 00:58:28	Multiple Updates
2018-01-11 05:20:28	Multiple Updates
2017-12-21 09:22:26	First insertion