Buffer overflow in macOS - CVE-2021-30748
Published: July 21, 2021
Vulnerability identifier: #VU55189
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30748
CWE-ID: CWE-119
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 boundary error within the AVEVideoEncoder subsystem. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code with kernel privileges.
Affected software
macOS
iPadOS
Apple iOS
iPadOS
Apple iOS
How to mitigate CVE-2021-30748
Install updates from vendor's website.
macOS - update to 11.5 20G71
iPadOS - addressed in versions 14.7 18G69, 14.7 18G70
Apple iOS - update to 14.7 18G69
iPadOS - addressed in versions 14.7 18G69, 14.7 18G70
Apple iOS - update to 14.7 18G69