Information disclosure in macOS - CVE-2021-30697

Vulnerability identifier: #VU53456

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-30697

CWE-ID: CWE-200

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Heimdal. A local user can gain unauthorized access to sensitive user information.

macOS
watchOS
iPadOS
tvOS
Apple iOS

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

• https://support.apple.com/en-us/HT212529

• Multiple vulnerabilities in Apple macOS Big Sur
• Multiple vulnerabilities in Apple macOS Mojave
• Multiple vulnerabilities in Apple macOS Catalina
• Multiple vulnerabilities in Apple tvOS
• Multiple vulnerabilities in Apple watchOS
• Multiple vulnerabilities in Apple iOS and iPadOS