FortiMail - Unauthenticated encryption in IBE leads to email plaintext recovery
Summary
A missing cryptographic step in FortiMail IBE may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.
Affected Products
FortiMail version 6.4.4 and below.
FortiMail version 6.2.6 and below.
Solutions
Please upgrade to FortiMail version 7.0.0 or above