#VU50220 Permissions, Privileges, and Access Controls in macOS


Published: 2021-02-02

Vulnerability identifier: #VU50220

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1771

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to incorrect access restrictions within the Messages component in macOS. A remote user that is removed from an iMessage group could rejoin the group.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

macOS: 11.0 20A2411 - 11.1 20C69, 10.15 19A583 - 10.15.7 19H15, 10.14 18A391 - 10.14.6 18G84, 10.13 17A365 - 10.13.6 17G66, 10.12.4 16E195 - 10.12.6 16G1114, 10.3 7B85


External links
http://support.apple.com/en-us/HT212147


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability