Information Exposure Through Timing Discrepancy in macOS - CVE-2024-23218

Vulnerability identifier: #VU85660

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-23218

CWE-ID: CWE-208

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a timing side-channel issue in CoreCrypto. A remote attacker can decrypt legacy RSA PKCS#1 v1.5 ciphertexts without having the private key.

macOS
watchOS
iPadOS
Apple iOS
tvOS

Install updates from vendor's website.

macOS - addressed in versions 14.3 23D56, 12.7.4 21H1123, 13.6.5 22G621
watchOS - update to 10.3
iPadOS - addressed in versions 16.7.6, 17.3 21D50
Apple iOS - addressed in versions 16.7.6 20H320, 17.3 21D50
tvOS - update to 17.3

• https://support.apple.com/en-us/HT214061

• Multiple vulnerabilities in Apple macOS Sonoma
• Multiple vulnerabilities in Apple iOS 17 and iPadOS 17
• Multiple vulnerabilities in Apple watchOS
• Multiple vulnerabilities in Apple tvOS
• Multiple vulnerabilities in Apple macOS Monterey
• Multiple vulnerabilities in Apple macOS Ventura
• Multiple vulnerabilities in Apple iOS 16 and iPadOS 16