CVE-2021-30995: Apple macOS fclonefileat Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability
A race condition was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. A malicious application may be able to elevate privileges.
Other sources
Preferences. A race condition was addressed with improved state handling.
This vulnerability allows local attackers to escalate privileges on affected installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of directory paths. The code is subject to a time-of-check/time-of-use race condition when performing path validation. An attacker can leverage this vulnerability to escalate privileges from low integrity and execute code in the context of root.
Credit
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2021-30950
- CVE-2021-30931
- CVE-2021-30935
- CVE-2021-30942
- CVE-2021-30957
- CVE-2021-30962
- CVE-2021-30959
- CVE-2021-30961
- CVE-2021-30963
- CVE-2021-30958
- CVE-2021-30945
- CVE-2021-31007
- CVE-2021-31013
- CVE-2021-30895
- CVE-2021-30977
- CVE-2021-30969
- CVE-2021-30939
- CVE-2021-30981
- CVE-2021-30982
- CVE-2021-30927
- CVE-2021-30980
- CVE-2021-30937
- CVE-2021-30949
- CVE-2021-30990
- CVE-2021-30976
- CVE-2021-30929
- CVE-2021-30979
- CVE-2021-30940
- CVE-2021-30941
- CVE-2021-30973
- CVE-2021-30971
- CVE-2021-30995
- CVE-2021-30968
- CVE-2021-30947
- CVE-2021-30946
- CVE-2021-30975
- CVE-2021-31002
- CVE-2021-30767
- CVE-2021-30970
- CVE-2021-30965
- CVE-2021-30938
- CVE-2021-30960
- CVE-2021-30966
- CVE-2021-30926
- CVE-2021-31000
- CVE-2021-30916
- CVE-2021-30993
- CVE-2021-30955
- CVE-2021-30944
- CVE-2021-30934
- CVE-2021-30936
- CVE-2021-30951
- CVE-2021-30952
- CVE-2021-30984
- CVE-2021-30953
- CVE-2021-30954
- CVE-2021-30943
- CVE-2021-30964
- CVE-2021-30987
- CVE-2021-30986
- CVE-2021-30996
- CVE-2021-31009
- CVE-2021-30972
- CVE-2021-30956
- CVE-2021-30992
- CVE-2021-30983
- CVE-2021-30985
- CVE-2021-30991
- CVE-2021-30998
- CVE-2021-30997
- CVE-2021-30967
- CVE-2021-30988
- CVE-2021-30932
- CVE-2021-30948
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-30995.
What is the title of the vulnerability?
The title of the vulnerability is 'Preferences. A race condition was addressed with improved state handling.'
What is the description of the vulnerability?
The vulnerability involves a race condition in the Preferences feature and has been addressed with improved state handling.
Which software products are affected by this vulnerability?
The following software products are affected: Apple Catalina, macOS Monterey (up to version 12.1), macOS Big Sur (up to version 11.6.2), watchOS (up to version 8.3), iOS (up to version 15.2), iPadOS (up to version 15.2), and tvOS (up to version 15.2).
How can I fix this vulnerability?
To fix this vulnerability, you should update the affected software to the latest version provided by Apple.
What is the Common Weakness Enumeration (CWE) ID for this vulnerability?
The Common Weakness Enumeration (CWE) ID for this vulnerability is CWE-362.
Where can I find more information about this vulnerability?
You can find more information about this vulnerability on the Apple support website. Here are some references: [Link 1](https://support.apple.com/en-us/HT212980), [Link 2](https://support.apple.com/en-us/HT212978), [Link 3](https://support.apple.com/en-us/HT212975).