CVE-2019-8524

Apple Safari GraphicsContext Use-After-Free Remote Code Execution Vulnerability

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, 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.

Múltiples problemas de corrupción de memoria fueron abordados mejorando el manejo de la memoria. Este problema es corregido en iOS versión 12.2, tvOS versión 12.2, 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.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the GraphicsContext object. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: G. Geshev

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

High

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

2019-02-18 CVE Reserved
2019-03-26 CVE Published
2024-08-04 CVE Updated
2024-11-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/HT209599	2021-07-21
https://support.apple.com/HT209601	2021-07-21
https://support.apple.com/HT209603	2021-07-21
https://support.apple.com/HT209604	2021-07-21
https://support.apple.com/HT209605	2021-07-21
https://access.redhat.com/security/cve/CVE-2019-8524	2020-09-29
https://bugzilla.redhat.com/show_bug.cgi?id=1719209	2020-09-29

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