CWE
347
Advisory Published
CVE Published
Updated

CVE-2018-4111

First published: Thu Mar 29 2018(Updated: )

Mail. An issue existed in the handling of S/MIME HTML e-mail. This issue was addressed by not loading remote resources on S/MIME encrypted messages by default if the message has an invalid or missing S/MIME signature.

Credit: Damian Poddebniak MChristian Dresen MJens Müller Ruhr University BochumFabian Ising MSebastian Schinzel MSimon Friedberger KU LeuvenJuraj Somorovsky Ruhr University BochumJörg Schwenk Ruhr University Bochum product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple Mac OS X<10.13.4
Apple macOS High Sierra<10.13.4
10.13.4
Apple Sierra
Apple El Capitan

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2018-4111?

    CVE-2018-4111 is a vulnerability that exists in the handling of S/MIME HTML e-mail in certain Apple products, specifically macOS before version 10.13.4.

  • How does CVE-2018-4111 affect Apple products?

    CVE-2018-4111 allows man-in-the-middle attackers to read S/MIME encrypted message content in the 'Mail' component of affected Apple products.

  • Which versions of macOS are affected by CVE-2018-4111?

    macOS versions before 10.13.4 are affected by CVE-2018-4111.

  • What is the severity of CVE-2018-4111?

    The severity of CVE-2018-4111 is medium, with a CVSSv3 base score of 5.9.

  • How can CVE-2018-4111 be mitigated?

    To mitigate CVE-2018-4111, update macOS to version 10.13.4 or later.

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