Out-of-bounds read in macOS - CVE-2021-30791
Published: July 22, 2021 / Updated: August 6, 2021
Vulnerability identifier: #VU55214
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-2021-30791
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 Model I/O. A remote attacker can create a specially crafted ABC file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
Affected software
macOS
iPadOS
Apple iOS
iPadOS
Apple iOS
How to mitigate CVE-2021-30791
Install updates from vendor's website.
macOS - addressed in versions 11.5 20G71, 10.14.6 18G9323, 10.15.7 19H1323
iPadOS - addressed in versions 14.7 18G69, 14.7 18G70
Apple iOS - update to 14.7 18G69
iPadOS - addressed in versions 14.7 18G69, 14.7 18G70
Apple iOS - update to 14.7 18G69