high
7.8
CWE
20 787
Advisory Published
CVE Published
Updated

CVE-2021-1738: Input Validation

First published: Tue Jan 26 2021(Updated: )

An out-of-bounds write 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: Xingwei Lin Ant Security LightLei Sun Xingwei Lin Ant Security LightXingwei Lin Ant Security LightLei Sun Xingwei Lin Ant Security Light product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
Apple iPadOS<14.4
Apple iPhone OS<14.4
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-2021-1738?

    CVE-2021-1738 is a vulnerability in ImageIO that allows for an out-of-bounds write, but has been addressed with improved input validation.

  • Which software versions are affected by CVE-2021-1738?

    The affected software versions include macOS Big Sur 11.2, Apple Catalina, Apple Mojave, iOS up to but not including 14.4, and iPadOS up to but not including 14.4.

  • How can I fix CVE-2021-1738?

    To fix CVE-2021-1738, update your software to the latest version provided by Apple.

  • Where can I find more information about CVE-2021-1738?

    You can find more information about CVE-2021-1738 on the Apple support page.

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