Out-of-bounds read in macOS - CVE-2021-31013
Published: February 13, 2023
Vulnerability identifier: #VU72155
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-31013
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in FontParser. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.
Affected software
macOS
watchOS
Apple iOS
iPadOS
tvOS
watchOS
Apple iOS
iPadOS
tvOS
How to mitigate CVE-2021-31013
Install updates from vendor's website.
macOS - addressed in versions 11.6.2 20G314, 12.1 21C52
watchOS - update to 8.3 19S55
Apple iOS - update to 15.2 19C56
iPadOS - update to 15.2 19C56
tvOS - update to 15.2 19K53
watchOS - update to 8.3 19S55
Apple iOS - update to 15.2 19C56
iPadOS - update to 15.2 19C56
tvOS - update to 15.2 19K53