CVE-2020-27950

Apple Multiple Products Memory Initialization Vulnerability

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

A memory initialization issue was addressed. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to disclose kernel memory.

Se abordó un problema de inicialización de la memoria. Este problema se corrigió en macOS Big Sur versión 11.0.1, watchOS versión 7.1, iOS versión 12.4.9, watchOS versión 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS versión 14.2 y iPadOS versión 14.2, watchOS versión 5.3.9, macOS Catalina versión 10.15.7 Supplemental Update, macOS Catalina versión 10.15.7 Update. Una aplicación maliciosa puede ser capaz de revelar la memoria del kernel

The XNU kernel suffers from a memory disclosure vulnerability in mach message trailers.

Apple iOS, iPadOS, macOS, and watchOS contain a memory initialization vulnerability that may allow a malicious application to disclose kernel memory.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

None

Availability

None

* 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
2020-12-01 First Exploit
2021-11-03 Exploited in Wild
2022-05-03 KEV Due Date
2024-03-26 EPSS Updated
2024-08-04 CVE Updated

CWE

CWE-665: Improper Initialization

CAPEC

References (11)

URL	Tag	Source
http://packetstormsecurity.com/files/161296/XNU-Kernel-Mach-Message-Trailers-Memory-Disclosure.html	Third Party Advisory
http://seclists.org/fulldisclosure/2020/Dec/32	Mailing List

URL	Date	SRC
https://github.com/synacktiv/CVE-2020-27950	2020-12-01

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT211928	2021-02-11
https://support.apple.com/en-us/HT211929	2021-02-11
https://support.apple.com/en-us/HT211931	2021-02-11
https://support.apple.com/en-us/HT211940	2021-02-11
https://support.apple.com/en-us/HT211944	2021-02-11
https://support.apple.com/en-us/HT211945	2021-02-11
https://support.apple.com/en-us/HT211946	2021-02-11
https://support.apple.com/en-us/HT211947	2021-02-11

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
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"				< 12.4.9 Search vendor "Apple" for product "Iphone Os" and version " < 12.4.9"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				>= 14.0 < 14.2 Search vendor "Apple" for product "Iphone Os" and version " >= 14.0 < 14.2"		-		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				< 10.15.7 Search vendor "Apple" for product "Macos" and version " < 10.15.7"		-		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"		Watchos Search vendor "Apple" for product "Watchos"				< 5.3.9 Search vendor "Apple" for product "Watchos" and version " < 5.3.9"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				>= 6.0 < 6.2.9 Search vendor "Apple" for product "Watchos" and version " >= 6.0 < 6.2.9"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				>= 7.0 < 7.1 Search vendor "Apple" for product "Watchos" and version " >= 7.0 < 7.1"		-		Affected