CVE-2020-27917

Apple Security Advisory 2020-12-14-4

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 14.2 and iPadOS 14.2, iCloud for Windows 11.5, tvOS 14.2, iTunes 12.11 for Windows. Processing maliciously crafted web content may lead to code execution.

Se abordó un problema de uso de la memoria previamente liberada con una administración de la memoria mejorada. Este problema se corrigió en macOS Big Sur versión 11.0.1, watchOS versión 7.1, iOS versión 14.2 y iPadOS versión 14.2, iCloud para Windows versión 11.5, tvOS versión 14.2, iTunes versión 12.11 para Windows. El procesamiento de contenido web diseñado maliciosamente puede conllevar a una ejecución de código

macOS Big Sur 11.0.1 addresses buffer overflow, bypass, code execution, denial of service, information leakage, integer overflow, out of bounds read, out of bounds write, path sanitization, spoofing, and use-after-free vulnerabilities.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

2020-10-27 CVE Reserved
2020-11-09 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (7)

URL	Tag	Source
http://seclists.org/fulldisclosure/2020/Dec/32	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT211928	2021-03-10
https://support.apple.com/en-us/HT211929	2021-03-10
https://support.apple.com/en-us/HT211930	2021-03-10
https://support.apple.com/en-us/HT211931	2021-03-10
https://support.apple.com/en-us/HT211933	2021-03-10
https://support.apple.com/en-us/HT211935	2021-03-10

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"				< 11.5 Search vendor "Apple" for product "Icloud" and version " < 11.5"		windows		Affected
Apple Search vendor "Apple"		Itunes Search vendor "Apple" for product "Itunes"				< 12.11 Search vendor "Apple" for product "Itunes" and version " < 12.11"		windows		Affected
Apple Search vendor "Apple"		Ipados Search vendor "Apple" for product "Ipados"				< 14.2 Search vendor "Apple" for product "Ipados" and version " < 14.2"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 14.2 Search vendor "Apple" for product "Iphone Os" and version " < 14.2"		-		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 11.0 < 11.0.1 Search vendor "Apple" for product "Macos" and version " >= 11.0 < 11.0.1"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 14.2 Search vendor "Apple" for product "Tvos" and version " < 14.2"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 7.1 Search vendor "Apple" for product "Watchos" and version " < 7.1"		-		Affected