medium
5.5
CWE
119 120
Advisory Published
Updated

CVE-2021-30940: Buffer Overflow

First published: Tue Aug 24 2021(Updated: )

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.1, iOS 15.2 and iPadOS 15.2, macOS Big Sur 11.6.2, Security Update 2021-008 Catalina. Processing a maliciously crafted USD file may disclose memory contents.

Credit: Rui Yang Xingwei Lin Ant Security Light cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Apple macOS Monterey<12.1
12.1
Apple macOS<11.6.2
11.6.2
macOS Catalina
Apple iOS, iPadOS, and watchOS<15.2
15.2
Apple iOS, iPadOS, and watchOS<15.2
15.2
Apple iOS, iPadOS, and watchOS<15.2
iStyle @cosme iPhone OS<15.2
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-security_update_2021-001
Apple iOS and macOS=10.15.7-security_update_2021-002
Apple iOS and macOS=10.15.7-security_update_2021-003
Apple iOS and macOS=10.15.7-security_update_2021-004
Apple iOS and macOS=10.15.7-security_update_2021-005
Apple iOS and macOS=10.15.7-security_update_2021-006
Apple iOS and macOS=10.15.7-security_update_2021-007
Apple iOS and macOS>=11.0<11.6.2
Apple iOS and macOS>=12.0<12.1

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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-2021-30940?

    CVE-2021-30940 is a buffer overflow issue in Model I/O that has been fixed with improved memory handling.

  • What software is affected by CVE-2021-30940?

    CVE-2021-30940 affects Apple iOS up to version 15.2, Apple iPadOS up to version 15.2, Apple macOS Monterey up to version 12.1, and Apple macOS Big Sur up to version 11.6.2.

  • How can I fix CVE-2021-30940?

    To fix CVE-2021-30940, update your Apple iOS, iPadOS, macOS Monterey, or macOS Big Sur to the latest available version.

  • What is the severity of CVE-2021-30940?

    The severity of CVE-2021-30940 is not specified.

  • Where can I find more information about CVE-2021-30940?

    You can find more information about CVE-2021-30940 on the Apple support page.

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