CVE-2021-30663

Apple Multiple Products WebKit Integer Overflow Vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.

Se abordó un desbordamiento de enteros con una comprobación de entrada mejorada. Este problema es corregido en iOS versión 14.5.1 y iPadOS versión 14.5.1, tvOS versión 14.6, iOS versión 12.5.3, Safari versión 14.1.1, macOS Big Sur versión 11.3.1. El procesamiento de contenido web maliciosamente diseñado puede conllevar a una ejecución de código arbitrario

A flaw was found in the webkitgtk package. Affected versions of this package could allow a remote attacker to execute arbitrary code on the system caused by an integer overflow in the WebKit component. An attacker can execute arbitrary code on the system by persuading a victim to visit a specially crafted Web site.

Apple iOS, iPadOS, macOS, tvOS, and Safari WebKit contain an integer overflow vulnerability that leads to code execution when processing maliciously crafted web content. 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

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
2021-05-04 CVE Published
2021-11-03 Exploited in Wild
2021-11-17 KEV Due Date
2024-08-03 CVE Updated
2024-09-25 EPSS Updated
---------- First Exploit

CWE

CWE-190: Integer Overflow or Wraparound

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT212335	2024-05-16
https://support.apple.com/en-us/HT212336	2024-05-16
https://support.apple.com/en-us/HT212341	2024-05-16
https://support.apple.com/en-us/HT212532	2024-05-16
https://support.apple.com/en-us/HT212534	2024-05-16
https://access.redhat.com/security/cve/CVE-2021-30663	2021-11-09
https://bugzilla.redhat.com/show_bug.cgi?id=1986872	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"		Macos Search vendor "Apple" for product "Macos"				>= 11.0 < 11.3.1 Search vendor "Apple" for product "Macos" and version " >= 11.0 < 11.3.1"		-		Affected
Apple Search vendor "Apple"		Safari Search vendor "Apple" for product "Safari"				< 14.1.1 Search vendor "Apple" for product "Safari" and version " < 14.1.1"		-		Affected
Apple Search vendor "Apple"		Ipados Search vendor "Apple" for product "Ipados"				>= 14.0 < 14.5.1 Search vendor "Apple" for product "Ipados" and version " >= 14.0 < 14.5.1"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 12.5.3 Search vendor "Apple" for product "Iphone Os" and version " < 12.5.3"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				>= 14.0 < 14.5.1 Search vendor "Apple" for product "Iphone Os" and version " >= 14.0 < 14.5.1"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 14.6 Search vendor "Apple" for product "Tvos" and version " < 14.6"		-		Affected