CVE-2019-8663

NSKeyedUnarchiver - Info Leak in Decoding SGBigUTF8String

Severity Score

5.3

*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. A remote attacker may be able to leak memory.

Este problema fue abordado con comprobaciones mejoradas. Este problema es corregido en iOS versión 12.4, macOS Mojave versión 10.14.6. Un atacante remoto puede ser capaz de filtrar la memoria.

NSKeyedUnarchiver suffers from an information leak when decoding the SGBigUTF8String class using [SGBigUTF8String initWithCoder:]. This class initializes the string using [SGBigUTF8String initWithUTF8DataNullTerminated:] even though there is no guarantee the bytes provided to the decoder are null terminated. It should use [SGBigUTF8String initWithUTF8Data:] instead.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* 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
2019-08-15 First Exploit
2024-08-04 CVE Updated
2024-11-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC
https://www.exploit-db.com/exploits/47257	2019-08-15

URL	Date	SRC

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