Out-of-bounds read in macOS - CVE-2021-1791
Published: February 2, 2021
Vulnerability identifier: #VU50191
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1791
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the FairPlay component in macOS. A local application can trigger out-of-bounds read error and read contents of kernel memory.
Affected software
macOS
iPadOS
Apple iOS
iPadOS
Apple iOS
How to mitigate CVE-2021-1791
Install updates from vendor's website.
macOS - update to 11.2 20D64
iPadOS - update to 14.4 18D52
Apple iOS - update to 14.4 18D52
iPadOS - update to 14.4 18D52
Apple iOS - update to 14.4 18D52