high
7.8
CWE
125 20
Advisory Published
CVE Published
Updated

CVE-2021-1790: Input Validation

First published: Thu Nov 12 2020(Updated: )

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. Processing a maliciously crafted font may lead to arbitrary code execution.

Credit: Peter Nguyen Vu Hoang STAR Labs product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple macOS<11.0.1
11.0.1
Apple macOS<11.2
11.2
macOS Catalina
macOS Mojave
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-supplemental_update
Apple iOS and macOS>=11.0<11.2

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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-2021-1790?

    CVE-2021-1790 is a vulnerability in FontParser that allows an out-of-bounds read.

  • What is the severity of CVE-2021-1790?

    The severity of CVE-2021-1790 is not specified in the provided information.

  • How does CVE-2021-1790 affect macOS Big Sur version 11.0.1?

    CVE-2021-1790 affects macOS Big Sur version 11.0.1 by allowing an out-of-bounds read.

  • How can I fix CVE-2021-1790 on macOS Big Sur version 11.0.1?

    To fix CVE-2021-1790 on macOS Big Sur version 11.0.1, update to a version that has the improved input validation.

  • Where can I find more information about CVE-2021-1790?

    More information about CVE-2021-1790 can be found at the following references: [Reference 1](https://support.apple.com/en-us/HT212147), [Reference 2](https://support.apple.com/en-us/HT211931).

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