CVE-2020-27930

Apple Multiple Products Memory Corruption Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

A memory corruption issue was addressed with improved input validation. 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. Processing a maliciously crafted font may lead to arbitrary code execution.

Se abordó un problema de corrupción de la memoria con una comprobación de entrada mejorada. 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. El procesamiento de una fuente diseñada maliciosamente puede conllevar a una ejecución de código arbitraria

Apple Safari is susceptible to a remote code execution vulnerability via an undefined othersubr in Type 1 fonts handled by libType1Scaler.dylib on macOS and iOS.

Apple iOS, iPadOS, macOS, and watchOS FontParser contain a memory corruption vulnerability which may allow for code execution when processing maliciously crafted front.

*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

Partial

Integrity

Partial

Availability

Partial

* 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
2021-02-07 First Exploit
2021-11-03 Exploited in Wild
2022-05-03 KEV Due Date
2024-08-04 CVE Updated
2024-11-14 EPSS Updated

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (11)

URL	Tag	Source
http://packetstormsecurity.com/files/161294/Apple-Safari-Remote-Code-Execution.html	Third Party Advisory
http://seclists.org/fulldisclosure/2020/Dec/32	Mailing List

URL	Date	SRC
https://github.com/FunPhishing/Apple-Safari-Remote-Code-Execution-CVE-2020-27930	2021-02-07

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"		Mac Os X Search vendor "Apple" for product "Mac Os X"				< 10.15.7 Search vendor "Apple" for product "Mac Os X" 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