Out-of-bounds read in Apple iOS and iPadOS - CVE-2021-30991
Published: December 14, 2021
Vulnerability identifier: #VU58901
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30991
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a boundary error in IOMobileFrameBuffer. A local application can execute arbitrary code with kernel privileges.
Affected software
Apple iOS
iPadOS
iPadOS
How to mitigate CVE-2021-30991
Install updates from vendor's website.
Apple iOS - addressed in versions 15.2 19C56, 15.2 19C57
iPadOS - update to 15.2 19C56
iPadOS - update to 15.2 19C56