Security features bypass in iPadOS and Apple iOS - CVE-2021-30770
Published: July 22, 2021
Vulnerability identifier: #VU55226
CSH Severity: Low
CVSS v4 BT: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-30770
CWE-ID: CWE-254
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a logic error within the OS Kernel subsystem. A local application that has already achieved kernel code execution may be able to bypass kernel memory mitigations.
Affected software
iPadOS
Apple iOS
watchOS
tvOS
Apple iOS
watchOS
tvOS
How to mitigate CVE-2021-30770
Install updates from vendor's website.
iPadOS - addressed in versions 14.7 18G69, 14.7 18G70
Apple iOS - update to 14.7 18G69
watchOS - update to 7.6 18U63
tvOS - update to 14.7 18M60
Apple iOS - update to 14.7 18G69
watchOS - update to 7.6 18U63
tvOS - update to 14.7 18M60