high
7.8
CWE
20 787
Advisory Published
CVE Published
Updated

CVE-2021-30743: Input Validation

First published: Mon Apr 26 2021(Updated: )

An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Sur 11.3. Processing a maliciously crafted image may lead to arbitrary code execution.

Credit: CFF Topsec Alpha TeamYe Zhang @co0py_Cat Baidu Security Jeonghoon Shin @singi21a THEORI working with Trend Micro Zero Day InitiativeYe Zhang @co0py_Cat Baidu SecurityCFF Topsec Alpha TeamJzhu Trend Micro Zero Day InitiativeXingwei Lin Ant Security LightCFF Topsec Alpha TeamJeonghoon Shin @singi21a THEORI working with Trend Micro Zero Day InitiativeJzhu Trend Micro Zero Day InitiativeYe Zhang @co0py_Cat Baidu SecurityJzhu Trend Micro Zero Day InitiativeXingwei Lin Ant Security LightCFF Topsec Alpha TeamJeonghoon Shin @singi21a THEORI working with Trend Micro Zero Day InitiativeYe Zhang @co0py_Cat Baidu SecurityCFF Topsec Alpha TeamJzhu Trend Micro Zero Day InitiativeXingwei Lin Ant Security LightCFF Topsec Alpha TeamJeonghoon Shin @singi21a THEORI working with Trend Micro Zero Day InitiativeCFF Topsec Alpha Teaman anonymous researcher Jeonghoon Shin @singi21a THEORI working with Trend Micro Zero Day Initiative product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iOS<14.5
14.5
Apple iPadOS<14.5
14.5
Apple tvOS<14.5
14.5
<7.4
7.4
Apple macOS Big Sur<11.3
11.3
Apple Catalina
Apple iPadOS<14.5
Apple iPhone OS<14.5
Apple Mac OS X=10.15
Apple Mac OS X=10.15.1
Apple Mac OS X=10.15.2
Apple Mac OS X=10.15.3
Apple Mac OS X=10.15.4
Apple Mac OS X=10.15.5
Apple Mac OS X=10.15.6
Apple Mac OS X=10.15.6
Apple Mac OS X=10.15.6-supplemental_update
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2020-005
Apple Mac OS X=10.15.7-security_update_2020-007
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0.1<11.3
Apple tvOS<14.5
Apple watchOS<7.4

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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 vulnerability?

    The vulnerability ID for this vulnerability is CVE-2021-30743.

  • What is the title of this vulnerability?

    The title of this vulnerability is "ImageIO. An out-of-bounds write was addressed with improved input validation."

  • What is the description of this vulnerability?

    The description of this vulnerability is "ImageIO. Processing a maliciously crafted image may lead to arbitrary code execution."

  • Which software are affected by this vulnerability?

    The software affected by this vulnerability are Apple iOS up to and excluding version 14.5, Apple iPadOS up to and excluding version 14.5, Apple watchOS up to and excluding version 7.4, Apple macOS Big Sur up to and excluding version 11.3, Apple Catalina, and Apple tvOS up to and excluding version 14.5.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability on the following references: [link1](https://support.apple.com/en-us/HT212530), [link2](https://support.apple.com/en-us/HT212317), [link3](https://support.apple.com/en-us/HT212324).

  • What is the Common Weakness Enumeration (CWE) ID for this vulnerability?

    The Common Weakness Enumeration (CWE) ID for this vulnerability is 20.

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