high
8.8
CWE
416
Advisory Published
CVE Published
CVE Published
Updated

CVE-2018-4218: Use After Free

First published: Tue May 29 2018(Updated: )

An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site that triggers an @generatorState use-after-free.

Credit: an anonymous researcher natashenka Google Project ZeroSamuel Groß @5aelo Trend Micro product-security@apple.com product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iTunes for Windows<12.7.5
12.7.5
Apple Safari<11.1.1
Apple iPhone OS<11.4
Apple tvOS<11.4
Apple watchOS<4.3.1
Apple iCloud<7.5
Microsoft Windows
Apple iTunes<12.7.5
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=17.10
Canonical Ubuntu Linux=18.04
All of
Apple iCloud<7.5
Microsoft Windows
All of
Apple iTunes<12.7.5
Microsoft Windows
ubuntu/webkit2gtk<2.20.3-0ubuntu0.17.10.1
2.20.3-0ubuntu0.17.10.1
ubuntu/webkit2gtk<2.20.3-0ubuntu0.18.04.1
2.20.3-0ubuntu0.18.04.1
ubuntu/webkit2gtk<2.20.3
2.20.3
ubuntu/webkit2gtk<2.20.3-0ubuntu0.16.04.1
2.20.3-0ubuntu0.16.04.1
debian/webkit2gtk
2.44.2-1~deb11u1
2.44.3-1~deb11u1
2.44.2-1~deb12u1
2.44.3-1~deb12u1
2.44.3-1
2.44.4-1

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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 the severity of CVE-2018-4218?

    The severity of CVE-2018-4218 is high, with a severity value of 8.8.

  • What products are affected by CVE-2018-4218?

    iOS before 11.4, Safari before 11.1.1, iCloud before 7.5 on Windows, iTunes before 12.7.5 on Windows, tvOS before 11.4, and watchOS before 4.3.1 are affected by CVE-2018-4218.

  • How can I fix CVE-2018-4218?

    Update to the latest available version of iOS, Safari, iCloud, iTunes, tvOS, and watchOS to fix CVE-2018-4218.

  • Are Ubuntu Linux versions affected by CVE-2018-4218?

    Yes, Ubuntu Linux versions 16.04, 17.10, and 18.04 are affected by CVE-2018-4218.

  • Where can I find more information about CVE-2018-4218?

    You can find more information about CVE-2018-4218 at the following references: [1] [2] [3]

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