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Vulnerability details: VCID-cnyu-9rjm-aaae
Vulnerability ID VCID-cnyu-9rjm-aaae
Aliases CVE-2017-2521
Summary An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. tvOS before 10.2.1 is affected. watchOS before 3.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
Status Published
Exploitability 2.0
Weighted Severity 7.9
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-2521.html
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generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2521
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2017-2521
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2017-2521
generic_textual Medium https://support.apple.com/HT207798
generic_textual Medium https://support.apple.com/HT207800
generic_textual Medium https://support.apple.com/HT207801
generic_textual Medium https://support.apple.com/HT207804
generic_textual Medium https://webkitgtk.org/security/WSA-2017-0004.html
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-2521.html
https://api.first.org/data/v1/epss?cve=CVE-2017-2521
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2521
https://security.gentoo.org/glsa/201706-15
https://support.apple.com/HT207798
https://support.apple.com/HT207800
https://support.apple.com/HT207801
https://support.apple.com/HT207804
https://webkitgtk.org/security/WSA-2017-0004.html
https://www.exploit-db.com/exploits/42103/
http://www.securityfocus.com/bid/98456
http://www.securitytracker.com/id/1038487
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
CVE-2017-2521 Exploit https://bugs.chromium.org/p/project-zero/issues/detail?id=1165
CVE-2017-2521 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/42103.js
CVE-2017-2521 https://nvd.nist.gov/vuln/detail/CVE-2017-2521
Data source Exploit-DB
Date added June 1, 2017
Description WebKit JSC - 'JSObject::ensureLength' ensureLengthSlow Check Failure
Ransomware campaign use Known
Source publication date June 1, 2017
Exploit type dos
Platform linux
Source update date June 1, 2017
Source URL https://bugs.chromium.org/p/project-zero/issues/detail?id=1165
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-2521
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-2521
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.88371
EPSS Score 0.04711
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.