Buffer overflow in Apple iOS and iPadOS - CVE-2021-30983
Published: December 14, 2021 / Updated: June 27, 2022
Vulnerability identifier: #VU58898
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30983
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
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 trigger a buffer overflow and execute arbitrary code with kernel privileges.
Affected software
Apple iOS
iPadOS
iPadOS
How to mitigate CVE-2021-30983
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