PT-2021-18906 · Apple · Tvos+6

Xingwei Lin · Published 2021-09-13 · Updated 2021-11-05 · CVE-2021-30843

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions iOS versions prior to 14.8 iPadOS versions prior to 14.8 macOS Big Sur versions prior to 11.6 macOS Catalina versions prior to Security Update 2021-005 tvOS versions prior to 15 watchOS versions prior to 8

Description This issue was addressed with improved checks. Processing a maliciously crafted dfont file may lead to arbitrary code execution.

Recommendations For iOS versions prior to 14.8, update to iOS 14.8 or later. For iPadOS versions prior to 14.8, update to iPadOS 14.8 or later. For macOS Big Sur versions prior to 11.6, update to macOS Big Sur 11.6 or later. For macOS Catalina versions prior to Security Update 2021-005, apply Security Update 2021-005 or later. For tvOS versions prior to 15, update to tvOS 15 or later. For watchOS versions prior to 8, update to watchOS 8 or later.

Fix

Related Identifiers

CVE-2021-30843

Affected Products

Apple Macos

Ios

Ipados

Macos Big Sur

Macos Catalina

Tvos

Watchos

References · 16

• https://support.apple.com/en-us/HT212804 · Vendor Advisory
• https://support.apple.com/en-us/HT212807 · Vendor Advisory
• https://support.apple.com/en-us/HT212814 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30843 · Security Note
• https://support.apple.com/en-us/HT212819 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30843 · Vendor Advisory
• https://support.apple.com/en-us/HT212815 · Vendor Advisory
• https://support.apple.com/en-us/HT212805 · Vendor Advisory
• http://seclists.org/fulldisclosure/2021/Oct/61 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30843 · Note
• https://t.me/cvenotify/22332 · Telegram Post
• https://t.me/cibsecurity/30792 · Telegram Post
• https://support.apple.com/en-us/103147 · Note
• http://seclists.org/fulldisclosure/2021/Oct/62 · Note
• https://t.me/cvenotify/23067 · Telegram Post