CVE-2019-8518

WebKit JavaScriptCore - Out-Of-Bounds Access in FTL JIT due to LICM Moving Array Access Before the Bounds Check

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.

Se abordaron múltiples problemas de corrupción de memoria mejorando el manejo de la memoria. Este problema es corregido en iOS versión 12.2, tvOS versión 12.2, watchOS versión 5.2, Safari versión 12.1, iTunes versión 12.9.4 para Windows, iCloud para Windows versión 7.11. El procesamiento de contenido web diseñado maliciosamente puede conllevar a una ejecución de código arbitrario.

A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

*Credits: N/A

CVSS Scores

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

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-02-18 CVE Reserved
2019-03-26 CVE Published
2019-04-03 First Exploit
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-787: Out-of-bounds Write

CAPEC

References (9)

URL	Tag	Source

URL	Date	SRC
https://www.exploit-db.com/exploits/46649	2019-04-03

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/HT209599	2020-08-24
https://support.apple.com/HT209601	2020-08-24
https://support.apple.com/HT209602	2020-08-24
https://support.apple.com/HT209603	2020-08-24
https://support.apple.com/HT209604	2020-08-24
https://support.apple.com/HT209605	2020-08-24
https://access.redhat.com/security/cve/CVE-2019-8518	2019-11-05
https://bugzilla.redhat.com/show_bug.cgi?id=1719206	2019-11-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Icloud Search vendor "Apple" for product "Icloud"				< 7.11 Search vendor "Apple" for product "Icloud" and version " < 7.11"		windows		Affected
Apple Search vendor "Apple"		Itunes Search vendor "Apple" for product "Itunes"				< 12.9.4 Search vendor "Apple" for product "Itunes" and version " < 12.9.4"		windows		Affected
Apple Search vendor "Apple"		Safari Search vendor "Apple" for product "Safari"				< 12.1 Search vendor "Apple" for product "Safari" and version " < 12.1"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 12.2 Search vendor "Apple" for product "Iphone Os" and version " < 12.2"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 12.2 Search vendor "Apple" for product "Tvos" and version " < 12.2"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 5.2 Search vendor "Apple" for product "Watchos" and version " < 5.2"		-		Affected