high
7.8
CWE
125 20
Advisory Published
CVE Published
Updated

CVE-2021-1736: Input Validation

First published: Mon Feb 01 2021(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 image may lead to arbitrary code execution.

Credit: product-security@apple.com Xingwei Lin Ant Security LightXingwei Lin Ant Security Light

Affected SoftwareAffected VersionHow to fix
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
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-security_update_2020-007
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-security_update_2020-001
Apple Mac OS X=10.15.7-supplemental_update
Apple 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-2021-1736?

    CVE-2021-1736 is a vulnerability in the ImageIO library that allows for an out-of-bounds read, which has been addressed with improved input validation.

  • Which software versions are affected by CVE-2021-1736?

    CVE-2021-1736 affects macOS Big Sur versions 11.2 up to, but not including, 11.2.

  • How can I fix CVE-2021-1736?

    To fix CVE-2021-1736, update your macOS Big Sur to version 11.2 or later.

  • Is Apple Catalina affected by CVE-2021-1736?

    Yes, Apple Catalina is affected by CVE-2021-1736.

  • Where can I find more information about CVE-2021-1736?

    You can find more information about CVE-2021-1736 on the Apple support website.

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