PT-2021-18935 · Apple · Macos Monterey+3

Jeremy Brown · Published 2021-08-24 · Updated 2021-11-01 · CVE-2021-30877

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions macOS versions prior to 12.0.1 macOS Big Sur versions prior to 11.6.1 Security Update versions prior to 2021-007 Catalina

Description An out-of-bounds read issue was addressed with improved bounds checking. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory.

Recommendations For macOS versions prior to 12.0.1, update to macOS Monterey 12.0.1 or later. For macOS Big Sur versions prior to 11.6.1, update to macOS Big Sur 11.6.1 or later. For Security Update versions prior to 2021-007 Catalina, apply Security Update 2021-007 Catalina or later.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-30877

Affected Products

Applescript

Apple Macos

Macos Big Sur

Macos Monterey

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2021-30877 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30877 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30877 · Note
• https://support.apple.com/en-us/103236 · Note
• https://support.apple.com/en-us/103164 · Note
• https://support.apple.com/en-us/HT212872 · Note
• https://support.apple.com/en-us/HT212871 · Note
• https://support.apple.com/en-us/HT212869 · Note