Buffer overflow in macOS - CVE-2021-30993
Published: December 14, 2021
Vulnerability identifier: #VU58866
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30993
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the OS kernel. A remote attacker on the local network can send specially crafted traffic to the system, trigger memory corruption and execute arbitrary code.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
macOS
watchOS
tvOS
Apple iOS
iPadOS
watchOS
tvOS
Apple iOS
iPadOS
How to mitigate CVE-2021-30993
Install updates from vendor's website.
macOS - update to 12.1 21C52
watchOS - update to 8.3 19S55
tvOS - update to 15.2 19K53
Apple iOS - addressed in versions 15.2 19C56, 15.2 19C57
iPadOS - update to 15.2 19C56
watchOS - update to 8.3 19S55
tvOS - update to 15.2 19K53
Apple iOS - addressed in versions 15.2 19C56, 15.2 19C57
iPadOS - update to 15.2 19C56