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.

The version of Apple iOS running on the mobile device is prior to 11.3. It is, therefore, affected by multiple vulnerabilities.

The remote host is running a version of macOS that is 10.13.x prior to 10.13.4. It is, therefore, affected by multiple vulnerabilities in the following components :

 - Admin Framework
 - APFS
 - ATS
 - CoreFoundation
 - CoreText
 - Disk Images
 - Disk Management
 - File System Events
 - iCloud Drive
 - Intel Graphics Driver
 - IOFireWireFamily
 - Kernel
 - kext tools
 - LaunchServices
 - Mail
 - Notes
 - NSURLSession
 - NVIDIA Graphics Drivers
 - PDFKit
 - PluginKit
 - Quick Look
 - Security
 - Storage
 - System Preferences
 - Terminal
 - WindowServer

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The remote host is running a version of macOS / Mac OS X that is 10.13.x prior to 10.13.4. It is, therefore, affected by multiple vulnerabilities in the following components :

  - Admin Framework
  - APFS
  - ATS
  - CoreFoundation
  - CoreText
  - Disk Images
  - Disk Management
  - File System Events
  - iCloud Drive
  - Intel Graphics Driver
  - IOFireWireFamily
  - Kernel
  - kext tools
  - LaunchServices
  - Mail
  - Notes
  - NSURLSession
  - NVIDIA Graphics Drivers
  - PDFKit
  - PluginKit
  - Quick Look
  - Security
  - Storage
  - System Preferences
  - Terminal
  - WindowServer

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

ID	Name	Product	Family	Severity
700548	Apple iOS < 11.3 Multiple Vulnerabilities	Nessus Network Monitor	Mobile Devices	critical
700515	macOS 10.13.x < 10.13.4 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	critical
108812	Apple iOS < 11.3 Multiple Vulnerabilities	Nessus	Mobile Devices	critical
108786	macOS 10.13.x < 10.13.4 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical

Detections

Analytics

CVE-2018-4174

medium

Tenable Plugins

critical

critical

critical

critical