Integer overflow in macOS - CVE-2021-30760
Published: July 22, 2021
Vulnerability identifier: #VU55200
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-2021-30760
CWE-ID: CWE-190
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 integer overflow in FontParser. A remote attacker can pass specially crafted font file, trigger integer overflow 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-2021-30760
Install updates from vendor's website.
macOS - addressed in versions 11.5 20G71, 10.14.6 18G9323, 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