Type Confusion in iPadOS and Apple iOS - CVE-2021-30852
Published: December 8, 2021
Vulnerability identifier: #VU58688
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-2021-30852
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error in the Foundation subsystem. A remote attacker can trick the victim to visit a specially crafted website, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
iPadOS
Apple iOS
macOS
Apple iOS
macOS
How to mitigate CVE-2021-30852
Install updates from vendor's website.
iPadOS - update to 15.0 19A346
Apple iOS - update to 15.0 19A346
macOS - update to 12.0.1 21A559
Apple iOS - update to 15.0 19A346
macOS - update to 12.0.1 21A559