Vulnerability identifier: #VU50219

Vulnerability risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-29633

CWE-ID: CWE-287

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests in Login Window component in macOS. A remote attacker on the local network can bypass authentication process and gain unauthorized access to the application.

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

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

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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