Description
An issue was discovered in certain Apple products. macOS before 10.13.4 is affected. The issue involves the "Mail" component. It allows man-in-the-middle attackers to read S/MIME encrypted message content by sending HTML e-mail that references remote resources but lacks a valid S/MIME signature.
References
- https://support.apple.com/HT208692
- 103582 vdb-entry
- 1040608 vdb-entry