medium
5.9
Advisory Published
CVE Published
Updated

CVE-2018-4174

First published: Thu Mar 29 2018(Updated: )

An issue was discovered in certain Apple products. iOS before 11.3 is affected. 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 messages by leveraging an inconsistency in the user interface.

Credit: John McCombs Integrated Mapping LtdMcClain Looney LoonSoft IncJohn McCombs Integrated Mapping LtdMcClain Looney LoonSoft Inc product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iOS<11.3
11.3
Apple macOS<10.13.4
10.13.4
Apple Sierra
Apple El Capitan
Apple iPhone OS<11.3
macOS Yosemite<10.13.4

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2018-4174?

    CVE-2018-4174 is a vulnerability that affects certain versions of Apple iOS and macOS, specifically before iOS 11.3 and before macOS 10.13.4. It is related to the "Mail" component and allows man-in-the-middle attackers to read S/MIME encrypted messages by exploiting a user interface inconsistency.

  • What is the severity of CVE-2018-4174?

    The severity of CVE-2018-4174 is medium, with a CVSS score of 5.9.

  • How does CVE-2018-4174 affect Apple products?

    CVE-2018-4174 affects Apple iOS before 11.3 and macOS before 10.13.4, as well as Apple Sierra, Apple El Capitan, Apple iPhone OS before 11.3, and Apple Mac OS X before 10.13.4.

  • How can I fix CVE-2018-4174?

    To fix CVE-2018-4174, users should update the affected Apple products to iOS 11.3 or later, or macOS 10.13.4 or later.

  • Where can I find more information about CVE-2018-4174?

    You can find more information about CVE-2018-4174 on Apple's official support page: [https://support.apple.com/en-us/HT208693](https://support.apple.com/en-us/HT208693).

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