Buffer overflow in iPadOS and Apple iOS - CVE-2020-27943
Published: December 15, 2020 / Updated: May 15, 2021
Vulnerability identifier: #VU48986
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-2020-27943
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 fonts within the FontParser component. A remote attacker can create a document or web page with a specially crafted font, 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
iPadOS
Apple iOS
watchOS
macOS
tvOS
Apple iOS
watchOS
macOS
tvOS
How to mitigate CVE-2020-27943
Install updates from vendor's website.
iPadOS - update to 14.3 18C66
Apple iOS - update to 14.3 18C66
watchOS - update to 7.2 18S564
macOS - addressed in versions 10.14.6 18G7016, 10.15.7 19H114, 11.1 20C69
tvOS - update to 14.3 18K561
Apple iOS - update to 14.3 18C66
watchOS - update to 7.2 18S564
macOS - addressed in versions 10.14.6 18G7016, 10.15.7 19H114, 11.1 20C69
tvOS - update to 14.3 18K561