PT-2020-6452 · Apple · Ios+3

Published 2020-09-30 · Updated 2025-10-27 · CVE-2020-27930

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 macOS versions prior to 11.0.1 watchOS versions prior to 7.1 iOS versions prior to 14.2 iPadOS versions prior to 14.2 watchOS versions prior to 6.2.9 watchOS versions prior to 5.3.9 macOS Catalina versions prior to 10.15.7 Supplemental Update macOS Catalina versions prior to 10.15.7 Update macOS High Sierra versions prior to Security Update 2020-006 macOS Mojave versions prior to Security Update 2020-006

Description The issue is caused by a memory corruption problem due to a buffer overflow in dynamic memory. This can allow an attacker to execute arbitrary code. The problem was addressed with improved input validation. Processing a maliciously crafted font may lead to arbitrary code execution.

Recommendations For macOS versions prior to 11.0.1, update to macOS Big Sur 11.0.1. For watchOS versions prior to 7.1, update to watchOS 7.1. For iOS versions prior to 14.2, update to iOS 14.2. For iPadOS versions prior to 14.2, update to iPadOS 14.2. For watchOS versions prior to 6.2.9, update to watchOS 6.2.9. For watchOS versions prior to 5.3.9, update to watchOS 5.3.9. For macOS Catalina versions prior to 10.15.7 Supplemental Update, update to macOS Catalina 10.15.7 Supplemental Update. For macOS Catalina versions prior to 10.15.7 Update, update to macOS Catalina 10.15.7 Update. For macOS High Sierra versions prior to Security Update 2020-006, apply Security Update 2020-006. For macOS Mojave versions prior to Security Update 2020-006, apply Security Update 2020-006.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2021-04931

CVE-2020-27930

Affected Products

Apple Macos

Ios

Ipados

Watchos

References · 26

• https://support.apple.com/en-us/HT211946 · Vendor Advisory
• https://support.apple.com/en-us/HT211928 · Vendor Advisory
• https://support.apple.com/en-us/HT211940 · Vendor Advisory
• https://support.apple.com/en-us/HT211929 · Vendor Advisory
• https://support.apple.com/en-us/HT211947 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-04931 · Security Note
• https://support.apple.com/en-us/HT211931 · Vendor Advisory
• https://support.apple.com/en-us/HT211945 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27930 · Security Note
• https://osv.dev/vulnerability/CVE-2020-27930 · Vendor Advisory
• https://support.apple.com/en-us/HT211944 · Vendor Advisory
• https://t.me/cybersecuritytechnologies/2643 · Telegram Post
• https://cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv · Note
• https://t.me/thehackernews/892 · Telegram Post
• https://t.me/cybersecuritytechnologies/2943 · Telegram Post