CVE Vulnerabilities

CVE-2021-30827

Improper Preservation of Permissions

Published: Oct 19, 2021 | Modified: Oct 22, 2021
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.

Weakness

The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.

Affected Software

Name Vendor Start Version End Version
Mac_os_x Apple 10.15 (including) 10.15.6 (including)
Mac_os_x Apple 10.15.7 (including) 10.15.7 (including)
Mac_os_x Apple 10.15.7-security_update_2020 (including) 10.15.7-security_update_2020 (including)
Mac_os_x Apple 10.15.7-security_update_2020-001 (including) 10.15.7-security_update_2020-001 (including)
Mac_os_x Apple 10.15.7-security_update_2020-005 (including) 10.15.7-security_update_2020-005 (including)
Mac_os_x Apple 10.15.7-security_update_2020-007 (including) 10.15.7-security_update_2020-007 (including)
Mac_os_x Apple 10.15.7-security_update_2021-001 (including) 10.15.7-security_update_2021-001 (including)
Mac_os_x Apple 10.15.7-security_update_2021-002 (including) 10.15.7-security_update_2021-002 (including)
Mac_os_x Apple 10.15.7-security_update_2021-003 (including) 10.15.7-security_update_2021-003 (including)
Mac_os_x Apple 10.15.7-supplemental_update (including) 10.15.7-supplemental_update (including)
Macos Apple 11.0 (including) 11.6 (excluding)

References