Buffer overflow in macOS - CVE-2021-30775
Published: July 21, 2021
Vulnerability identifier: #VU55190
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-2021-30775
CWE-ID: CWE-119
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 boundary error when processing audio files within the CoreAudio subsystem. A remote attacker can create a specially crafted audio file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
macOS
watchOS
tvOS
iPadOS
Apple iOS
watchOS
tvOS
iPadOS
Apple iOS
How to mitigate CVE-2021-30775
Install updates from vendor's website.
macOS - addressed in versions 11.5 20G71, 10.15.7 19H1323
watchOS - update to 7.6 18U63
tvOS - update to 14.7 18M60
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
iPadOS - addressed in versions 14.7 18G69, 14.7 18G70
Apple iOS - update to 14.7 18G69