CVE-2018-4111

low-risk

Published 2018-04-03

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.

Do I need to act?

0.44% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.9/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Mac Os X

Affected Vendors

Apple

References (6)

Third Party Advisory http://www.securityfocus.com/bid/103582

Third Party Advisory http://www.securitytracker.com/id/1040608

Vendor Advisory https://support.apple.com/HT208692

Third Party Advisory http://www.securityfocus.com/bid/103582

Third Party Advisory http://www.securitytracker.com/id/1040608

Vendor Advisory https://support.apple.com/HT208692

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low-risk

Severity 18/34 · Moderate

Exploitability 2/34 · Minimal

Exposure 5/34 · Minimal