Security features bypass in macOS - CVE-2021-30657
Published: April 27, 2021 / Updated: November 8, 2021
Vulnerability identifier: #VU52653
CSH Severity: Critical
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30657
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to a logic issue within the Gatekeeper checks. A remote attacker can craft a specially crafted payload that is not checked by Gatekeeper and bypasses File Quarantine and Application Notarization protections as well. As a result, a malicious binary can be executed on the system.
Note, the vulnerability is being actively exploited in the wild.
Affected software
macOS
How to mitigate CVE-2021-30657
Install updates from vendor's website.
macOS - update to 11.3 20E232