CVE-2021-30827 : A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Securi

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.

Published 2021-10-19 14:15:09

Updated 2021-10-22 18:08:03

Source Apple Inc.

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-30827

EPSS FAQ

0.04%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 6 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-30827

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.6	MEDIUM	AV:L/AC:L/Au:N/C:P/I:P/A:P	3.9	6.4	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-30827

CWE-281 Improper Preservation of Permissions

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.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-30827

https://support.apple.com/en-us/HT212804

About the security content of macOS Big Sur 11.6 - Apple Support
Release Notes;Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212805

About the security content of Security Update 2021-005 Catalina - Apple Support
Release Notes;Vendor Advisory

CVEs referencing this url

Products affected by CVE-2021-30827

Apple » Mac Os X
Versions from including (>=) 10.15 and up to, including, (<=) 10.15.6
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7
cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020-001
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Supplemental Update
cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020-005
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020-007
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2021-001
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2021-002
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2021-003
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*
Matching versions
Apple » Macos
Versions from including (>=) 11.0 and before (<) 11.6
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Matching versions

Vulnerability Details : CVE-2021-30827

Exploit prediction scoring system (EPSS) score for CVE-2021-30827

CVSS scores for CVE-2021-30827

CWE ids for CVE-2021-30827

References for CVE-2021-30827

Products affected by CVE-2021-30827