PT-2021-18889 · Apple · Apple Macos

Csaba Fitzl + 1 · Published 2021-07-21 · Updated 2021-11-02 · CVE-2021-30817

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions macOS versions prior to 11.5

Description A permissions issue was addressed with improved validation. A malicious application may be able to access data about the accounts the user is using Family Sharing with.

Recommendations For versions prior to 11.5, update to macOS Big Sur 11.5 to resolve the issue. As a temporary workaround, consider restricting access to sensitive data shared through Family Sharing until the update is applied.

Fix

Related Identifiers

CVE-2021-30817

Affected Products

Apple Macos

References · 7

• https://osv.dev/vulnerability/CVE-2021-30817 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30817 · Security Note
• https://support.apple.com/en-us/HT212602 · Vendor Advisory
• https://t.me/cibsecurity/31423 · Telegram Post
• https://t.me/cvenotify/22588 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30817 · Note
• https://support.apple.com/en-us/102849 · Note