The issue was addressed with improved input validation. This issue is fixed in Safari 18.4, visionOS 2.4, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4. A malicious website may be able to claim WebAuthn credentials from another website that shares a registrable suffix.
With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.
– Scott Cheney, Manager of Information Security, Sierra View Medical Center