Out-of-bounds read in Apple iOS and iPadOS - CVE-2023-27956
Published: March 27, 2023
Vulnerability identifier: #VU74076
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-27956
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 image file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.
Affected software
Apple iOS
iPadOS
watchOS
macOS
tvOS
iPadOS
watchOS
macOS
tvOS
How to mitigate CVE-2023-27956
Install updates from vendor's website.
Apple iOS - addressed in versions 16.4 20E247, 15.7.4 19H321
iPadOS - addressed in versions 16.4 20E247, 15.7.4 19H321
watchOS - update to 9.4 20T253
macOS - update to 13.3 22E252
tvOS - update to 16.4 20L497
iPadOS - addressed in versions 16.4 20E247, 15.7.4 19H321
watchOS - update to 9.4 20T253
macOS - update to 13.3 22E252
tvOS - update to 16.4 20L497