high
8.8
CWE
704
Advisory Published
CVE Published
Updated

CVE-2018-4284: Incorrect Type Cast

First published: Mon Jul 09 2018(Updated: )

A type confusion issue was addressed with improved memory handling. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.

Credit: found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz product-security@apple.com product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iCloud for Windows<7.6
7.6
Apple iTunes for Windows<12.8
12.8
Apple Safari<11.1.2
11.1.2
Apple watchOS<4.3.2
4.3.2
Apple tvOS<11.4.1
11.4.1
Apple iOS<11.4.1
11.4.1
Apple Safari<11.1.2
Apple iPhone OS<11.4.1
Apple tvOS<11.4.1
Apple watchOS<4.3.2
All of
Any of
Apple iCloud<7.6
Apple iTunes<12.8
Microsoft Windows
Apple iCloud<7.6
Apple iTunes<12.8
Microsoft Windows
debian/webkit2gtk
2.44.2-1~deb11u1
2.44.3-1~deb11u1
2.44.2-1~deb12u1
2.44.3-1~deb12u1
2.46.0-2
2.46.1-1

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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-2018-4284?

    CVE-2018-4284 is a type confusion vulnerability in WebKit that has been fixed in iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, and iCloud for Windows 7.6.

  • How severe is CVE-2018-4284?

    CVE-2018-4284 has a severity score of 8.8, which is considered high.

  • Which software versions are affected by CVE-2018-4284?

    Versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, and iCloud for Windows 7.6 are affected by CVE-2018-4284.

  • How do I fix CVE-2018-4284?

    To fix CVE-2018-4284, update to iOS 11.4.1 or later, tvOS 11.4.1 or later, watchOS 4.3.2 or later, Safari 11.1.2 or later, iTunes 12.8 or later for Windows, and iCloud for Windows 7.6 or later.

  • Where can I find more information about CVE-2018-4284?

    You can find more information about CVE-2018-4284 at the following references: [link1](https://support.apple.com/en-us/HT208933), [link2](https://support.apple.com/en-us/HT208934), [link3](https://support.apple.com/en-us/HT208938).

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