CVE-2021-1870

Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Se abordó un problema de lógica con unas restricciones mejoradas. Este problema es corregido en macOS Big Sur versión 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS versión 14.4 y iPadOS versión 14.4. Un atacante remoto puede conllevar a una ejecución de código arbitraria. Apple tiene conocimiento de un reporte que indica que este problema puede haber sido explotado activamente.

A logic issue was found in WebKitGTK and WPE WebKit in versions prior to 2.30.6. A remote attacker may be able to cause arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

*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

2020-12-08 CVE Reserved
2021-01-27 CVE Published
2021-11-03 Exploited in Wild
2021-11-17 KEV Due Date
2024-07-27 EPSS Updated
2024-08-03 CVE Updated
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ	2024-05-16
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU	2024-05-16
https://security.gentoo.org/glsa/202104-03	2024-05-16
https://support.apple.com/en-us/HT212146	2024-05-16
https://support.apple.com/en-us/HT212147	2024-05-16
https://access.redhat.com/security/cve/CVE-2021-1870	2021-11-09
https://bugzilla.redhat.com/show_bug.cgi?id=1944350	2021-11-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Ipad Os Search vendor "Apple" for product "Ipad Os"				< 14.4 Search vendor "Apple" for product "Ipad Os" and version " < 14.4"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 14.4 Search vendor "Apple" for product "Iphone Os" and version " < 14.4"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				>= 10.15 < 10.15.7 Search vendor "Apple" for product "Mac Os X" and version " >= 10.15 < 10.15.7"		-		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"		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"		security_update_2020-001		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"		supplemental_update		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 11.0.1 < 11.2 Search vendor "Apple" for product "Macos" and version " >= 11.0.1 < 11.2"		-		Affected
Webkitgtk Search vendor "Webkitgtk"		Webkitgtk Search vendor "Webkitgtk" for product "Webkitgtk"				< 2.30.6 Search vendor "Webkitgtk" for product "Webkitgtk" and version " < 2.30.6"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected