PT-2021-18984 · Apple · Tvos+7

Sergei Glazunov · Published 2021-08-24 · Updated 2022-04-01 · CVE-2021-30937

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions macOS Big Sur versions 11.6.2 and earlier tvOS versions 15.2 and earlier macOS Monterey versions 12.1 and earlier macOS Catalina versions prior to Security Update 2021-008 iOS versions 15.2 and earlier iPadOS versions 15.2 and earlier watchOS versions 8.3 and earlier

Description A memory corruption issue was addressed with improved locking, which may allow a malicious application to execute arbitrary code with kernel privileges.

Recommendations For macOS Big Sur version 11.6.2 and earlier, update to macOS Big Sur 11.6.2 or later. For tvOS version 15.2 and earlier, update to tvOS 15.2 or later. For macOS Monterey version 12.1 and earlier, update to macOS Monterey 12.1 or later. For macOS Catalina, apply Security Update 2021-008 or later. For iOS version 15.2 and earlier, update to iOS 15.2 or later. For iPadOS version 15.2 and earlier, update to iPadOS 15.2 or later. For watchOS version 8.3 and earlier, update to watchOS 8.3 or later.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-30937

Affected Products

Apple Macos

Ios

Ipados

Macos Big Sur

Macos Catalina

Macos Monterey

Tvos

Watchos

References · 15

• 🔥 http://packetstormsecurity.com/files/165475/XNU-inm_merge-Heap-Use-After-Free.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-30937 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30937 · Vendor Advisory
• https://t.me/cybersecuritytechnologies/5147 · Telegram Post
• https://t.me/cvenotify/25056 · Telegram Post
• https://t.me/cibsecurity/27839 · Telegram Post
• https://support.apple.com/en-us/HT212976 · Note
• https://support.apple.com/en-us/HT212975 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30937 · Note
• https://support.apple.com/en-us/HT212981 · Note
• https://support.apple.com/en-us/102876 · Note
• https://support.apple.com/en-us/102874 · Note
• https://support.apple.com/en-us/HT212980 · Note
• https://support.apple.com/en-us/HT212978 · Note
• https://support.apple.com/en-us/HT212979 · Note