CVE-2021-30849

webkitgtk: Multiple memory corruption issue leading to arbitrary code execution

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, watchOS 8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.

Se han abordado múltiples problemas de corrupción de memoria con un manejo de memoria mejorado. Este problema es corregido en iOS versión 14.8 y iPadOS versión 14.8, watchOS versión 8, Safari versión 15, tvOS versión 15, iOS versión 15 y iPadOS versión 15, iTunes versión 12.12 para Windows. El procesamiento de contenido web diseñado de forma maliciosa puede conllevar a una ejecución de código arbitrario

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Issues addressed include buffer overflow, bypass, code execution, cross site scripting, information leakage, out of bounds read, and use-after-free vulnerabilities.

*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

2021-04-13 CVE Reserved
2021-09-22 CVE Published
2021-10-14 First Exploit
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (19)

URL	Tag	Source
http://seclists.org/fulldisclosure/2021/Oct/60	Mailing List
http://seclists.org/fulldisclosure/2021/Oct/61	Mailing List
http://seclists.org/fulldisclosure/2021/Oct/62	Mailing List
http://seclists.org/fulldisclosure/2021/Oct/63	Mailing List
http://www.openwall.com/lists/oss-security/2021/10/26/9	Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/1	Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/2	Mailing List
http://www.openwall.com/lists/oss-security/2021/10/27/4	Mailing List

URL	Date	SRC
https://packetstorm.news/files/id/164518	2021-10-14

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT212807	2021-11-23
https://support.apple.com/en-us/HT212814	2021-11-23
https://support.apple.com/en-us/HT212815	2021-11-23
https://support.apple.com/en-us/HT212816	2021-11-23
https://support.apple.com/en-us/HT212817	2021-11-23
https://support.apple.com/en-us/HT212819	2021-11-23
https://support.apple.com/kb/HT212869	2021-11-23
https://support.apple.com/kb/HT212953	2021-11-23
https://access.redhat.com/security/cve/CVE-2021-30849	2022-05-10
https://bugzilla.redhat.com/show_bug.cgi?id=2017904	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"		Itunes Search vendor "Apple" for product "Itunes"				< 12.12 Search vendor "Apple" for product "Itunes" and version " < 12.12"		windows		Affected
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