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CVE-2021-30661 Design/Logic Flaw

Urgent
Remediate Within one Week

CVE Information

Original CVE data

Published:
Updated:

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

CWE: CWE-416
CVSS v26.8
AV:N/AC:M/AU:N/C:P/I:P/A:P
CVSS v38.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
https://support.apple.com/en-us/HT212341
https://support.apple.com/en-us/HT212318
https://support.apple.com/en-us/HT212317
https://support.apple.com/en-us/HT212325
https://support.apple.com/en-us/HT212323
https://support.apple.com/en-us/HT212324
Affected Vendors

Apple - (6)

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Design/Logic Flaw

CVSS Scores as calculated by PRIOnengine
CVSS v26.8
AV:N/AC:M/AU:N/C:P/I:P/A:P
CVSS v38.8
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
MITRE CWE Top 25

Vulnerability weakness type is in the top 25 CWEs according to MITRE. View Mitre Top 25 CWEs

Exploits

Exploits are available either through exploit packs, Github repos or the world wide web in general.

Active Exploitation

Vulnerability is referenced under CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

-

Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1566 - Phishing
T1499.004 - Endpoint Denial of Service (Application or System Exploitation)
T1203 - Exploitation for Client Execution
T1189 - Drive-by Compromise
T1059 - Command and Scripting Interpreter

Compliance Impact

How the submited vulnerability affects compliance

PCI DSS v3.2.1-6.5.2 - Buffer Overflows

Web Application Security Frameworks

Applicable if the issue likely affects a web application

-