Use-after-free in macOS - CVE-2021-1876
Published: April 27, 2021
Vulnerability identifier: #VU52625
CSH Severity: High
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-2021-1876
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing web content within the NSRemoteView component. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Affected software
macOS
How to mitigate CVE-2021-1876
Install updates from vendor's website.
macOS - addressed in versions 10.14.6 18G9028, 10.15.7 19H1030, 11.3 20E232