Vulnerability Details CVE-2017-7229
PGP/MIME encrypted messages injected into a Vaultive O365 (before 4.5.21) frontend via IMAP or SMTP have their Content-Type changed from 'Content-Type: multipart/encrypted; protocol="application/pgp-encrypted"; boundary="abc123abc123"' to 'Content-Type: text/plain' - this results in the encrypted message being structured in such a way that most PGP/MIME-capable mail user agents are unable to decrypt it cleanly. The outcome is that encrypted mail passing through this device does not work (Denial of Service), and a common real-world consequence is a request to resend the mail in the clear (Information Disclosure).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 47.7%
CVSS Severity
CVSS v3 Score 9.1
CVSS v2 Score 6.4
References
Products affected by CVE-2017-7229
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cpe:2.3:a:vaultive:office_365_security:4.5.19