CVE-2021-30897

webkitgtk: Cross-origin data exfiltration via resource timing API

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue existed in the specification for the resource timing API. The specification was updated and the updated specification was implemented. This issue is fixed in macOS Monterey 12.0.1. A malicious website may exfiltrate data cross-origin.

Existía un problema en la especificación de la API de sincronización de recursos. Se ha actualizado la especificación y se ha implementado la especificación actualizada. Este problema se ha solucionado en macOS Monterey versión 12.0.1. Un sitio web malicioso puede exfiltrar datos de forma cruzada

A flaw was found in the resource timing API specification and its implementation in WebKitGTK. A malicious web site could use this flaw to trigger a cross-domain data exfiltration.

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

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-13 CVE Reserved
2021-08-24 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (5)

URL	Tag	Source
https://support.apple.com/en-us/HT212869	X_refsource_misc
https://support.apple.com/kb/HT212814	X_refsource_confirm
https://support.apple.com/kb/HT212815	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2021-30897	2022-05-10
https://bugzilla.redhat.com/show_bug.cgi?id=2038907	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"		Ipados Search vendor "Apple" for product "Ipados"				< 15.0 Search vendor "Apple" for product "Ipados" and version " < 15.0"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 15.0 Search vendor "Apple" for product "Iphone Os" and version " < 15.0"		-		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