critical
9.3
CWE
119
Advisory Published
CVE Published
Updated

CVE-2018-4420: Buffer Overflow

First published: Tue Oct 30 2018(Updated: )

A memory corruption issue was addressed by removing the vulnerable code. This issue affected versions prior to iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1.

Credit: Mohamed Ghannam @_simo36 Mohamed Ghannam @_simo36 Mohamed Ghannam @_simo36 Mohamed Ghannam @_simo36 product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iPhone OS<12.1
Apple Mac OS X<10.14.1
Apple tvOS<12.1
Apple watchOS<5.1
Apple watchOS<5.1
5.1
Apple iOS<12.1
12.1
Apple tvOS<12.1
12.1
Apple macOS Mojave<10.14.1
10.14.1
Apple High Sierra
Apple Sierra

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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 the severity of CVE-2018-4420?

    The severity of CVE-2018-4420 is critical, with a severity value of 7.8.

  • Which software versions are affected by CVE-2018-4420?

    Versions prior to iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1 are affected by CVE-2018-4420.

  • How do I fix CVE-2018-4420 on macOS Mojave?

    To fix CVE-2018-4420 on macOS Mojave, update to version 10.14.1 or later.

  • How do I fix CVE-2018-4420 on iOS?

    To fix CVE-2018-4420 on iOS, update to version 12.1 or later.

  • Is there any additional information available for CVE-2018-4420?

    Yes, you can find additional information about CVE-2018-4420 on the Apple support website using the following links: [link1](https://support.apple.com/en-us/HT209193), [link2](https://support.apple.com/kb/HT209192), [link3](https://support.apple.com/kb/HT209193).

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