PT-2021-18829 · Apple · Apple Macos+4

Mickey Jin + 1 · Published 2021-05-24 · Updated 2023-01-09 · CVE-2021-30724

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions macOS versions prior to 11.4 iOS versions prior to 14.6 iPadOS versions prior to 14.6 tvOS versions prior to 14.6 watchOS versions prior to 7.5

Description A local attacker may be able to elevate their privileges due to an issue in the CVMServer, which is related to an integer overflow in the XPC request handler. This issue is complex to exploit but can potentially lead to privilege escalation. The vulnerability is located in the CVMServer service, which is present in both desktop and mobile Apple operating systems.

Recommendations For macOS versions prior to 11.4, update to macOS Big Sur 11.4 or later. For iOS versions prior to 14.6, update to iOS 14.6 or later. For iPadOS versions prior to 14.6, update to iPadOS 14.6 or later. For tvOS versions prior to 14.6, update to tvOS 14.6 or later. For watchOS versions prior to 7.5, update to watchOS 7.5 or later.

Fix

Related Identifiers

CVE-2021-30724

ZDI-21-794

Affected Products

Apple Macos

Ios

Ipados

Tvos

Watchos

References · 16

• https://osv.dev/vulnerability/CVE-2021-30724 · Vendor Advisory
• https://support.apple.com/en-us/HT212530 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-794 · Security Note
• https://support.apple.com/en-us/HT212529 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30724 · Security Note
• https://support.apple.com/en-us/HT212528 · Vendor Advisory
• https://support.apple.com/en-us/HT212531 · Vendor Advisory
• https://support.apple.com/en-us/HT212532 · Vendor Advisory
• https://support.apple.com/en-us/HT212533 · Vendor Advisory
• https://t.me/true_secator/1791 · Telegram Post
• https://support.apple.com/en-us/103131 · Note
• https://t.me/hnews/32487 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30724 · Note
• https://t.me/defcon_news/77850 · Telegram Post
• https://t.me/sysadm_in_up/674 · Telegram Post