CVE-2021-30841

HIGH

Apple OSes - Code Execution via Malicious dfont File

Title source: manual
STIX 2.1

Description

This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.

References (9)

Core 9
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212804
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212805
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212807
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212814
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212819
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212815
Mailing List, Release Notes, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2021/Oct/62
Mailing List, Release Notes, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2021/Oct/63
Mailing List, Release Notes, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2021/Oct/61

Scores

CVSS v3 7.8
EPSS 0.0129
EPSS Percentile 67.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

Status published
Products (7)
apple/ipados < 14.8
apple/iphone_os < 14.8
apple/mac_os_x 10.15.7 (10 CPE variants)
apple/mac_os_x 10.15 - 10.15.6
apple/macos 11.0 - 11.6
apple/tvos < 15.0
apple/watchos < 8.0
Published Oct 19, 2021
Tracked Since Feb 18, 2026