CVE-2019-8662

iMessage - Decoding NSSharedKeyDictionary can read ObjC Object at Attacker Controlled Address

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.

Este problema fue abordado con comprobaciones mejoradas. Este problema es corregido en iOS versión 12.4, macOS Mojave versión 10.14.6, tvOS versión 12.4, watchOS versión 5.3. Un atacante puede desencadenar un uso de la memoria previamente liberada en una aplicación que deserializa un NSDictionary no confiable.

macOS Mojave 10.14.6, Security Update 2019-004 High Sierra, Security Update 2019-004 Sierra are now available and address bypass, code execution, and use-after-free vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

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
2019-07-22 CVE Published
2019-07-29 First Exploit
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free
CWE-502: Deserialization of Untrusted Data

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC
https://packetstorm.news/files/id/155222	2019-11-11
https://packetstorm.news/files/id/153806	2019-07-29
https://www.exploit-db.com/exploits/47608	2019-11-11
https://www.exploit-db.com/exploits/47189	2019-07-30

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/HT210346	2020-08-24
https://support.apple.com/HT210348	2020-08-24
https://support.apple.com/HT210351	2020-08-24
https://support.apple.com/HT210353	2020-08-24

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"				< 12.4 Search vendor "Apple" for product "Iphone Os" and version " < 12.4"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				< 10.14.6 Search vendor "Apple" for product "Mac Os X" and version " < 10.14.6"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 12.4 Search vendor "Apple" for product "Tvos" and version " < 12.4"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 5.3 Search vendor "Apple" for product "Watchos" and version " < 5.3"		-		Affected