CVE-2021-30681: Input Validation

Published 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)

Affected Software

39 affected componentsFixes available
Apple macOS Big Sur<11.4
11.4
Apple Catalina
Apple Mojave
Apple WatchOS<7.5
7.5
Apple iOS<14.6
14.6
Apple iPadOS<14.6
14.6
Apple iPadOS<14.6
Apple iPhone OS<14.6
Apple iOS and macOS>=10.14<=10.14.5
Apple iOS and macOS>=10.15<=10.15.6
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
Apple iOS and macOS=10.14.6-security_update_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-security_update_2021-001
Apple iOS and macOS=10.14.6-security_update_2021-002
Apple iOS and macOS=10.14.6-security_update_2021-003
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
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-supplemental_update
Apple macOS>=11.0<11.4
Apple WatchOS<7.5

Event History

Sep 8, 2021
CVE Published
via MITRE·02:30 PM
Data Sourced
via MITRE·02:30 PM
DescriptionWeakness
Free Weekly Intel

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Frequently Asked Questions

1

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.

2

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.

3

What is the severity of CVE-2021-30681?

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

4

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.

5

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

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

Contact

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