Exploited
high
8.8
CWE
843
Advisory Published
CVE Published
Updated

CVE-2021-1789: Apple Multiple Products Type Confusion Vulnerability

First published: Tue Jan 26 2021(Updated: )

WebKit. A type confusion issue was addressed with improved state handling.

Credit: @S0rryMybad 360 Vulcan Team @S0rryMybad 360 Vulcan Team @S0rryMybad 360 Vulcan Team product-security@apple.com @S0rryMybad 360 Vulcan Team @S0rryMybad 360 Vulcan Team product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple Multiple Products
tvOS<14.4
14.4
Apple macOS<11.2
11.2
macOS Catalina
macOS Mojave
Apple Mobile Safari<14.0.3
14.0.3
Apple iOS, iPadOS, and watchOS<14.4
14.4
Apple iOS, iPadOS, and watchOS<14.4
14.4
Apple iOS, iPadOS, and watchOS<7.3
7.3
Apple iOS, iPadOS, and watchOS<14.4
iOS<14.4
Apple iOS and macOS>=10.14<10.14.6
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-supplemental_update
Apple iOS and macOS>=11.0<11.2
tvOS<14.4
Apple iOS, iPadOS, and watchOS<7.3
Fedora=32
Fedora=33
WebKitGTK+<2.30.6

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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 vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2021-1789.

  • Which Apple products are affected by this vulnerability?

    Multiple Apple products including Apple Multiple Products, Safari, macOS Big Sur, Catalina, Mojave, watchOS, iOS, iPadOS, and tvOS are affected.

  • What is the risk of this vulnerability?

    The vulnerability allows processing of maliciously crafted web content, leading to arbitrary code execution.

  • How can I fix this vulnerability?

    Apply the available security updates or patches provided by Apple for the affected products.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability on the following references: [Apple Support - HT212147](https://support.apple.com/en-us/HT212147), [Apple Support - HT212148](https://support.apple.com/en-us/HT212148), [Apple Support - HT212146](https://support.apple.com/en-us/HT212146).

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