What’s Vulnerable › Vulnerabilities

CVE-2024-23218

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-23 · updated 2026-06-17
• Weakness: CWE-203

Description

A timing side-channel issue was addressed with improvements to constant-time computation in cryptographic functions. This issue is fixed in iOS 16.7.6 and iPadOS 16.7.6, iOS 17.3 and iPadOS 17.3, macOS Monterey 12.7.4, macOS Sonoma 14.3, macOS Ventura 13.6.5, tvOS 17.3, watchOS 10.3. An attacker may be able to decrypt legacy RSA PKCS#1 v1.5 ciphertexts without having the private key.

Affected products

• Apple iPadOS: before 17.3 — fixed in 17.3
• Apple Iphone Os: before 17.3 — fixed in 17.3
• Apple macOS: from 14.0 before 14.3 — fixed in 14.3
• Apple tvOS: before 17.3 — fixed in 17.3
• Apple watchOS: before 10.3 — fixed in 10.3

How to fix

Upgrade to a fixed version: Apple iPadOS 17.3; Apple Iphone Os 17.3; Apple macOS 14.3; Apple tvOS 17.3; Apple watchOS 10.3. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/120304
• https://support.apple.com/en-us/120306
• https://support.apple.com/en-us/120309
• https://support.apple.com/en-us/120311
• https://support.apple.com/en-us/120880
• https://support.apple.com/en-us/120884
• https://support.apple.com/en-us/120886
• http://seclists.org/fulldisclosure/2024/Jan/33
• http://seclists.org/fulldisclosure/2024/Jan/36
• http://seclists.org/fulldisclosure/2024/Jan/39
• http://seclists.org/fulldisclosure/2024/Jan/40
• http://seclists.org/fulldisclosure/2024/Mar/22

Get alerted when CVE-2024-23218 or the next vulnerability affects your stack