CVE-2021-30818

webkitgtk: Type confusion issue leading to arbitrary code execution

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, iOS 15 and iPadOS 15, Safari 15, watchOS 8. Processing maliciously crafted web content may lead to arbitrary code execution.

Se abordó un problema de confusión de tipos con el manejo del estado mejorado. Este problema se corrigió en iOS versión 14.8 y iPadOS versión 14.8, tvOS versión 15, iOS versión 15 y iPadOS versión 15, Safari versión 15, watchOS versión 8. El procesamiento de contenido web diseñado de forma maliciosa puede conllevar a una ejecución de código arbitrario

A confusion type flaw was found in WebKitGTK. Specially crafted web content could use this flaw to trigger an arbitrary code execution when processed.

*Credits: N/A

Attack Vector

Network

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

2021-04-13 CVE Reserved
2021-10-28 CVE Published
2024-07-13 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

CAPEC

References (9)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2021/12/20/6	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT212807	2021-12-21
https://support.apple.com/en-us/HT212814	2021-12-21
https://support.apple.com/en-us/HT212815	2021-12-21
https://support.apple.com/en-us/HT212816	2021-12-21
https://support.apple.com/en-us/HT212819	2021-12-21
https://support.apple.com/kb/HT212869	2021-12-21
https://access.redhat.com/security/cve/CVE-2021-30818	2022-05-10
https://bugzilla.redhat.com/show_bug.cgi?id=2034368	2022-05-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Safari Search vendor "Apple" for product "Safari"				< 15.0 Search vendor "Apple" for product "Safari" and version " < 15.0"		-		Affected
Apple Search vendor "Apple"		Ipados Search vendor "Apple" for product "Ipados"				< 14.8 Search vendor "Apple" for product "Ipados" and version " < 14.8"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 14.8 Search vendor "Apple" for product "Iphone Os" and version " < 14.8"		-		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				< 12.0.1 Search vendor "Apple" for product "Macos" and version " < 12.0.1"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 15.0 Search vendor "Apple" for product "Tvos" and version " < 15.0"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 8.0 Search vendor "Apple" for product "Watchos" and version " < 8.0"		-		Affected