PT-2021-13637 · Apple · Macos Mojave+3

Matthew Denton · Published 2021-04-26 · Updated 2021-09-20 · CVE-2021-1876

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: macOS Big Sur versions prior to 11.3 Security Update versions prior to 2021-002 Catalina Security Update versions prior to 2021-003 Mojave

Description: A use after free issue was addressed with improved memory management. Processing maliciously crafted web content may lead to arbitrary code execution.

Recommendations: For macOS Big Sur, update to version 11.3 or later. For macOS Catalina, apply Security Update 2021-002 or later. For macOS Mojave, apply Security Update 2021-003 or later.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2021-1876

Affected Products

Apple Macos

Macos Big Sur

Macos Catalina

Macos Mojave

References · 7

• https://support.apple.com/en-us/HT212326 · Vendor Advisory
• https://support.apple.com/en-us/HT212325 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1876 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1876 · Security Note
• https://support.apple.com/en-us/HT212327 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1876 · Note
• https://support.apple.com/en-us/103126 · Note