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.
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Link | Tags |
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https://support.apple.com/HT208692 | vendor advisory |
http://www.securityfocus.com/bid/103582 | third party advisory vdb entry |
http://www.securitytracker.com/id/1040608 | third party advisory vdb entry |