CVE-2020-3909

Apple Security Advisory 2020-03-24-4

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. Multiple issues in libxml2.

Se abordó un desbordamiento del búfer con una comprobación de límites mejorada. Este problema es corregido en iOS versión 13.4 y iPadOS versión 13.4, macOS Catalina versión 10.15.4, tvOS versión 13.4, watchOS versión 6.2, iTunes para Windows versión 12.10.5, iCloud para Windows versión 10.9.3, iCloud para Windows versión 7.18. Múltiples problemas en libxml2.

macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra are now available and address buffer overflow, bypass, code execution, and information leakage 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

2019-12-18 CVE Reserved
2020-03-25 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (8)

URL	Tag	Source
https://www.oracle.com/security-alerts/cpuoct2020.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/HT211100	2022-06-02
https://support.apple.com/HT211101	2022-06-02
https://support.apple.com/HT211102	2022-06-02
https://support.apple.com/HT211103	2022-06-02
https://support.apple.com/HT211105	2022-06-02
https://support.apple.com/HT211106	2022-06-02
https://support.apple.com/HT211107	2022-06-02

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"				< 7.18 Search vendor "Apple" for product "Icloud" and version " < 7.18"		windows		Affected
Apple Search vendor "Apple"		Icloud Search vendor "Apple" for product "Icloud"				>= 10.9 < 10.9.3 Search vendor "Apple" for product "Icloud" and version " >= 10.9 < 10.9.3"		windows		Affected
Apple Search vendor "Apple"		Itunes Search vendor "Apple" for product "Itunes"				< 12.10.5 Search vendor "Apple" for product "Itunes" and version " < 12.10.5"		windows		Affected
Apple Search vendor "Apple"		Ipados Search vendor "Apple" for product "Ipados"				< 13.4 Search vendor "Apple" for product "Ipados" and version " < 13.4"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 13.4 Search vendor "Apple" for product "Iphone Os" and version " < 13.4"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				< 10.15.4 Search vendor "Apple" for product "Mac Os X" and version " < 10.15.4"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 13.4 Search vendor "Apple" for product "Tvos" and version " < 13.4"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 6.2 Search vendor "Apple" for product "Watchos" and version " < 6.2"		-		Affected
Oracle Search vendor "Oracle"		Sun Zfs Storage Appliance Kit Software Search vendor "Oracle" for product "Sun Zfs Storage Appliance Kit Software"				8.8 Search vendor "Oracle" for product "Sun Zfs Storage Appliance Kit Software" and version "8.8"		-		Affected