CVE-2021-30795

webkitgtk: Use-after-free 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 use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to arbitrary code execution.

Se abordó un problema de uso de memoria previamente liberada con una administración de memoria mejorada. Este problema se corrigió en iOS versión 14.7, Safari versión 14.1.2, macOS Big Sur versión 11.5, watchOS versión 7.6, tvOS versión 14.7. El procesamiento de contenido web diseñado maliciosamente puede conllevar a una ejecución de código arbitrario

GNOME is the default desktop environment of Red Hat Enterprise Linux. Issues addressed include buffer overflow, code execution, cross site scripting, information leakage, integer overflow, traversal, and use-after-free vulnerabilities.

*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

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-13 CVE Reserved
2021-07-23 CVE Published
2021-08-19 First Exploit
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-416: Use After Free

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC
https://packetstorm.news/files/id/163880	2021-08-19

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT212601	2021-09-16
https://support.apple.com/en-us/HT212602	2021-09-16
https://support.apple.com/en-us/HT212604	2021-09-16
https://support.apple.com/en-us/HT212605	2021-09-16
https://support.apple.com/en-us/HT212606	2021-09-16
https://access.redhat.com/security/cve/CVE-2021-30795	2021-11-09
https://bugzilla.redhat.com/show_bug.cgi?id=1986900	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"		Safari Search vendor "Apple" for product "Safari"				< 14.1.2 Search vendor "Apple" for product "Safari" and version " < 14.1.2"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 14.7 Search vendor "Apple" for product "Iphone Os" and version " < 14.7"		-		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 11.0 < 11.5 Search vendor "Apple" for product "Macos" and version " >= 11.0 < 11.5"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 14.7 Search vendor "Apple" for product "Tvos" and version " < 14.7"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 7.6 Search vendor "Apple" for product "Watchos" and version " < 7.6"		-		Affected