PT-2021-18970 · Apple · Apple Macos+4

Jzhu · Published 2021-08-24 · Updated 2023-01-09 · CVE-2021-30919

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 Apple iOS versions prior to 15.1 Apple iPadOS versions prior to 15.1 Apple macOS versions prior to Monterey 12.0.1 Apple macOS versions prior to Big Sur 11.6.1 Apple tvOS versions prior to 15.1 Apple watchOS versions prior to 8.1 Apple macOS Catalina versions prior to Security Update 2021-007 Apple iOS versions prior to 14.8.1 Apple iPadOS versions prior to 14.8.1

Description An out-of-bounds write issue was addressed with improved input validation. Processing a maliciously crafted PDF may lead to arbitrary code execution.

Recommendations For Apple iOS versions prior to 15.1, update to iOS 15.1 or later. For Apple iPadOS versions prior to 15.1, update to iPadOS 15.1 or later. For Apple macOS versions prior to Monterey 12.0.1, update to macOS Monterey 12.0.1 or later. For Apple macOS versions prior to Big Sur 11.6.1, update to macOS Big Sur 11.6.1 or later. For Apple tvOS versions prior to 15.1, update to tvOS 15.1 or later. For Apple watchOS versions prior to 8.1, update to watchOS 8.1 or later. For Apple macOS Catalina versions prior to Security Update 2021-007, apply Security Update 2021-007 or later. For Apple iOS versions prior to 14.8.1, update to iOS 14.8.1 or later. For Apple iPadOS versions prior to 14.8.1, update to iPadOS 14.8.1 or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-30919

ZDI-22-357

Affected Products

Apple Macos

Ios

Ipados

Tvos

Watchos

References · 13

• https://zerodayinitiative.com/advisories/ZDI-22-357 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-30919 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30919 · Vendor Advisory
• https://support.apple.com/en-us/HT212874 · Note
• https://support.apple.com/en-us/103236 · Note
• https://support.apple.com/en-us/HT212868 · Note
• https://support.apple.com/en-us/103164 · Note
• https://support.apple.com/en-us/HT212869 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30919 · Note
• https://support.apple.com/en-us/HT212872 · Note
• https://support.apple.com/en-us/HT212871 · Note
• https://support.apple.com/en-us/HT212867 · Note
• https://support.apple.com/en-us/HT212876 · Note