Use-after-free in iPadOS and Apple iOS - CVE-2021-30802
Published: July 22, 2021
Vulnerability identifier: #VU55224
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-2021-30802
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 images on web pages. A remote attacker can create a specially crafted web content, 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
iPadOS
Apple iOS
tvOS
Apple iOS
tvOS
How to mitigate CVE-2021-30802
Install updates from vendor's website.
iPadOS - addressed in versions 14.7 18G69, 14.7 18G70
Apple iOS - update to 14.7 18G69
tvOS - update to 14.7 18M60
Apple iOS - update to 14.7 18G69
tvOS - update to 14.7 18M60