PT-2021-13572 · Apple · Diskarbitration+1

Csaba Fitzl + 3 · Published 2021-04-26 · Updated 2022-07-12 · CVE-2021-1784

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

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

Description: A permissions issue existed in DiskArbitration, which was addressed with additional ownership checks. This issue allowed a malicious application to potentially modify protected parts of the file system.

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

Fix

Related Identifiers

CVE-2021-1784

Affected Products

Diskarbitration

Apple Macos

References · 11

• https://support.apple.com/en-us/HT212326 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1784 · Security Note
• https://support.apple.com/en-us/HT212325 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1784 · Vendor Advisory
• https://support.apple.com/en-us/HT212327 · Vendor Advisory
• https://t.me/cybersecuritytechnologies/5217 · Telegram Post
• https://t.me/cybersecuritytechnologies/4652 · Telegram Post
• https://support.apple.com/en-us/103126 · Note
• https://t.me/cvenotify/20993 · Telegram Post
• https://t.me/cibsecurity/28431 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1784 · Note