Buffer overflow in macOS - CVE-2021-30710
Published: May 24, 2021
Vulnerability identifier: #VU53457
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30710
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a malicious application to disclose sensitive information.
The vulnerability exists due to a boundary error in Heimdal. A malicious application can trigger memory corruption and cause a denial of service or potentially disclose memory contents.
Affected software
macOS
watchOS
iPadOS
tvOS
Apple iOS
watchOS
iPadOS
tvOS
Apple iOS
How to mitigate CVE-2021-30710
Install updates from vendor's website.
macOS - addressed in versions 11.4 20F71, 10.14.6 18G9216, 10.15.7 19H1217
watchOS - update to 7.5 18T567
iPadOS - update to 14.6 18F72
tvOS - update to 14.6 18L569
Apple iOS - update to 14.6 18F72
watchOS - update to 7.5 18T567
iPadOS - update to 14.6 18F72
tvOS - update to 14.6 18L569
Apple iOS - update to 14.6 18F72