medium
5.5
Advisory Published
CVE Published
Updated

CVE-2020-27946

First published: Mon Dec 14 2020(Updated: )

An information disclosure issue was addressed with improved state management. This issue is fixed in watchOS 7.2, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, iOS 14.3 and iPadOS 14.3, tvOS 14.3. Processing a maliciously crafted font may result in the disclosure of process memory.

Credit: Mateusz Jurczyk Google Project ZeroMateusz Jurczyk Google Project ZeroMateusz Jurczyk Google Project ZeroMateusz Jurczyk Google Project Zero product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple watchOS<7.2
7.2
Apple tvOS<14.3
14.3
Apple iOS<14.3
14.3
Apple iPadOS<14.3
14.3
Apple macOS Big Sur<11.1
11.1
Apple Catalina
Apple Mojave
Apple iPadOS<14.3
Apple iPhone OS<14.3
Apple Mac OS X>=10.14<10.14.6
Apple Mac OS X>=10.15<10.15.7
Apple Mac OS X=10.14.6
Apple Mac OS X=10.14.6-security_update_2019-001
Apple Mac OS X=10.14.6-security_update_2019-002
Apple Mac OS X=10.14.6-security_update_2019-006
Apple Mac OS X=10.14.6-security_update_2019-007
Apple Mac OS X=10.14.6-security_update_2020-001
Apple Mac OS X=10.14.6-security_update_2020-002
Apple Mac OS X=10.14.6-security_update_2020-003
Apple Mac OS X=10.14.6-security_update_2020-004
Apple Mac OS X=10.14.6-security_update_2020-005
Apple Mac OS X=10.14.6-security_update_2020-006
Apple Mac OS X=10.14.6-supplemental_update
Apple Mac OS X=10.14.6-supplemental_update_2
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0<11.1.0
Apple tvOS<14.3
Apple watchOS<7.2

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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-2020-27946?

    CVE-2020-27946 is a vulnerability in FontParser that allows for information disclosure.

  • How does CVE-2020-27946 impact Apple iOS?

    CVE-2020-27946 affects Apple iOS versions up to and exclusive of 14.3.

  • How does CVE-2020-27946 impact Apple iPadOS?

    CVE-2020-27946 affects Apple iPadOS versions up to and exclusive of 14.3.

  • How does CVE-2020-27946 impact Apple tvOS?

    CVE-2020-27946 affects Apple tvOS versions up to and exclusive of 14.3.

  • How does CVE-2020-27946 impact Apple macOS Big Sur?

    CVE-2020-27946 affects Apple macOS Big Sur versions up to and exclusive of 11.1.

  • How does CVE-2020-27946 impact Apple Catalina?

    CVE-2020-27946 has no specified impact on Apple Catalina.

  • How does CVE-2020-27946 impact Apple Mojave?

    CVE-2020-27946 has no specified impact on Apple Mojave.

  • How does CVE-2020-27946 impact Apple watchOS?

    CVE-2020-27946 affects Apple watchOS versions up to and exclusive of 7.2.

  • How can I fix CVE-2020-27946?

    To fix CVE-2020-27946, apply the recommended updates provided by Apple.

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