CVE-2017-2521

WebKit JSC - 'JSObject::ensureLength' ensureLengthSlow Check Failure

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Fue encontrado un problema en algunos productos de Apple. iOS anteriores a la versión 10.3.2 se ven afectados. Safari anterior a la versión 10.1.1 se ve afectado. tvOS anterior a la versión la 10.2.1 se ve afectado. watchOS anterior a la versión 3.2.2 se ve afectado. El problema involucra el componente "WebKit". Permite a los atacantes remotos ejecutar código arbitrario o causar una denegación de servicio (corrupción de la memoria y bloqueo de la aplicación) por medio de un sitio web creado.

Multiple vulnerabilities have been found in WebKitGTK+, the worst of which allows remote attackers to execute arbitrary code. Versions less than 2.16.3 are affected.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-12-01 CVE Reserved
2017-05-15 CVE Published
2017-06-01 First Exploit
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/98456	Third Party Advisory
http://www.securitytracker.com/id/1038487	Third Party Advisory

URL	Date	SRC
https://packetstorm.news/files/id/142767	2017-06-01
https://www.exploit-db.com/exploits/42103	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/201706-15	2019-03-21
https://support.apple.com/HT207798	2019-03-21
https://support.apple.com/HT207800	2019-03-21
https://support.apple.com/HT207801	2019-03-21
https://support.apple.com/HT207804	2019-03-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 10.3.2 Search vendor "Apple" for product "Iphone Os" and version " < 10.3.2"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				< 10.12.5 Search vendor "Apple" for product "Mac Os X" and version " < 10.12.5"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 10.2.1 Search vendor "Apple" for product "Tvos" and version " < 10.2.1"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 3.2.2 Search vendor "Apple" for product "Watchos" and version " < 3.2.2"		-		Affected