critical
9.3
CWE
20
Advisory Published
CVE Published
Updated

CVE-2021-30681: Input Validation

First published: Mon May 24 2021(Updated: )

Core Services. A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks.

Credit: Zhongcheng Li (CK01) Zhongcheng Li (CK01) Zhongcheng Li (CK01) Zhongcheng Li (CK01) Zhongcheng Li (CK01) product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple watchOS<7.5
7.5
Apple macOS Big Sur<11.4
11.4
Apple Catalina
Apple iOS<14.6
14.6
Apple iPadOS<14.6
14.6
Apple Mojave
Apple iPadOS<14.6
Apple iPhone OS<14.6
Apple Mac OS X>=10.14<=10.14.5
Apple Mac OS X>=10.15<=10.15.6
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_2019-004
Apple Mac OS X=10.14.6-security_update_2019-005
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-security_update_2021-001
Apple Mac OS X=10.14.6-security_update_2021-002
Apple Mac OS X=10.14.6-security_update_2021-003
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
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<11.4
Apple watchOS<7.5

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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-2021-30681?

    CVE-2021-30681 is a validation issue in the handling of symlinks in Core Services on Apple watchOS 7.5, macOS Big Sur 11.4, Mojave, iOS 14.6, iPadOS 14.6, and Catalina.

  • How does CVE-2021-30681 affect Apple devices?

    CVE-2021-30681 affects Apple watchOS 7.5, macOS Big Sur 11.4, Mojave, iOS 14.6, iPadOS 14.6, and Catalina.

  • What is the severity of CVE-2021-30681?

    The severity of CVE-2021-30681 is not specified.

  • How can I fix CVE-2021-30681?

    To fix CVE-2021-30681, update to the latest version of Apple watchOS, macOS Big Sur, Mojave, iOS, iPadOS, or Catalina.

  • Where can I find more information about CVE-2021-30681?

    More information about CVE-2021-30681 can be found on the Apple support website.

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