Out-of-bounds write in macOS - CVE-2021-30971
Published: December 14, 2021
Vulnerability identifier: #VU58870
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-2021-30971
CWE-ID: CWE-787
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 boundary error when processing USD files within the Model I/O subsystem. A remote attacker can create a specially crafted USD file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
Affected software
macOS
iPadOS
Apple iOS
iPadOS
Apple iOS
How to mitigate CVE-2021-30971
Install updates from vendor's website.
macOS - addressed in versions 12.1 21C52, 10.15.7 19H1615, 11.6.2 20G314
iPadOS - update to 15.2 19C56
Apple iOS - addressed in versions 15.2 19C56, 15.2 19C57
iPadOS - update to 15.2 19C56
Apple iOS - addressed in versions 15.2 19C56, 15.2 19C57