critical
9.3
CWE
20 787
Advisory Published
CVE Published
Updated

CVE-2020-3843: Input Validation

First published: Tue Jan 28 2020(Updated: )

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 12.4.7, watchOS 5.3.7. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

Credit: Ian Beer Google Project ZeroIan Beer Google Project ZeroIan Beer Google Project ZeroIan Beer Google Project Zero product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple watchOS<5.3.7
5.3.7
Apple iOS<12.4.7
12.4.7
Apple iPhone OS<12.4.7
Apple watchOS<5.3.7
Apple iOS<13.3.1
13.3.1
Apple iPadOS<13.3.1
13.3.1
Apple macOS Catalina<10.15.3
10.15.3
Apple Mojave
Apple High 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 CVE-2020-3843?

    CVE-2020-3843 is a memory corruption issue in Wi-Fi that has been addressed with improved input validation.

  • Which software is affected by CVE-2020-3843?

    Apple iOS versions up to and excluding 12.4.7, Apple watchOS versions up to and excluding 5.3.7, Apple iOS versions up to and excluding 13.3.1, Apple iPadOS versions up to and excluding 13.3.1, Apple macOS Catalina versions up to and excluding 10.15.3, Apple Mojave, and Apple High Sierra.

  • How can I fix CVE-2020-3843?

    Update your Apple devices to the recommended software versions: iOS 12.4.7, watchOS 5.3.7, iOS 13.3.1, iPadOS 13.3.1, or macOS Catalina 10.15.3.

  • What is the severity of CVE-2020-3843?

    The severity of CVE-2020-3843 is not specified.

  • Where can I find more information about CVE-2020-3843?

    You can find more information about CVE-2020-3843 on the Apple support page. [^1^] [^2^] [^3^]

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